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

:root {
    --primary-color: #8B5CF6;
    --primary-light: #A78BFA;
    --primary-dark: #7C3AED;
    --secondary-color: #1F1F2E;
    --secondary-light: #2D2D3F;
    --secondary-dark: #0F0F18;
    --accent-color: #F472B6;
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--secondary-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

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

header {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary-color) 100%);
    padding: 20px 0;
    border-bottom: 1px solid var(--secondary-light);
}

header .container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

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

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

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

nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
}

nav ul li {
    position: relative;
}

nav ul li a {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    color: var(--text-primary);
    background-color: var(--secondary-light);
}

nav ul li.active a {
    color: var(--text-primary);
    background-color: var(--primary-color);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    padding: 60px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
    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-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background-color: var(--secondary-light);
    border-radius: 25px;
}

.feature-item .icon {
    font-size: 18px;
}

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

.intro-section,
.features-section,
.latest-news {
    padding: 40px 0;
}

.intro-section h3,
.features-section h3,
.latest-news h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.intro-content {
    background-color: var(--secondary-light);
    padding: 30px;
    border-radius: 12px;
}

.intro-content p {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.intro-content p:last-child {
    margin-bottom: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.feature-card {
    background-color: var(--secondary-light);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--secondary-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 15px;
}

.feature-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.news-item {
    background-color: var(--secondary-light);
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateX(5px);
}

.news-item .category {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--primary-color);
    color: white;
    font-size: 12px;
    border-radius: 15px;
    margin-bottom: 10px;
}

.news-item h4 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.news-item p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-item .date {
    font-size: 12px;
    color: var(--text-muted);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    padding: 60px 0;
    text-align: center;
}

.cta-section h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: white;
}

.cta-section p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

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

.btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
    margin-left: 15px;
}

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

.page-hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-dark) 100%);
    padding: 40px 0;
    margin-bottom: 30px;
}

.page-hero h2 {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.page-hero p {
    font-size: 16px;
    color: var(--text-secondary);
}

.guide-content,
.contact-content,
.news-content,
.about-content,
.whitepaper-content {
    padding: 20px 0 40px;
}

.guide-section,
.section {
    background-color: var(--secondary-light);
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.guide-section h3,
.section h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.section-content h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary-light);
}

.section-content p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.8;
}

.section-content ul,
.section-content ol {
    margin-bottom: 15px;
    padding-left: 25px;
    color: var(--text-secondary);
}

.section-content li {
    margin-bottom: 10px;
}

.section-content strong {
    color: var(--text-primary);
}

.contact-info h3,
.feedback-form h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.info-item {
    display: flex;
    gap: 15px;
    background-color: var(--secondary-light);
    padding: 20px;
    border-radius: 10px;
}

.info-item .icon {
    font-size: 28px;
    flex-shrink: 0;
}

.info-detail h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.info-detail p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.feedback-form {
    background-color: var(--secondary-light);
    padding: 30px;
    border-radius: 12px;
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background-color: var(--secondary-dark);
    border: 1px solid var(--secondary-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.feedback-form button {
    padding: 12px 40px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.feedback-form button:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.featured-news {
    background-color: var(--secondary-light);
    padding: 30px;
    border-radius: 12px;
    margin-bottom: 30px;
}

.featured-news h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.featured-news .date {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.featured-news p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.8;
}

.featured-news h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-light);
}

.news-list .news-item {
    margin-bottom: 20px;
}

.news-list .news-item h4 {
    font-size: 17px;
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
}

.read-more:hover {
    text-decoration: underline;
}

.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 5px;
    width: 12px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: 50%;
    border: 3px solid var(--secondary-light);
}

.timeline-item .year {
    display: inline-block;
    padding: 5px 12px;
    background-color: var(--primary-color);
    color: white;
    font-size: 14px;
    font-weight: bold;
    border-radius: 20px;
    margin-bottom: 10px;
}

.timeline-item .content h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: var(--text-primary);
}

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

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.team-member {
    background-color: var(--secondary-light);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.member-avatar {
    font-size: 50px;
    margin-bottom: 15px;
}

.team-member h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.team-member .title {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.team-member p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.culture-item {
    background-color: var(--secondary-light);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
}

.culture-item .icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.culture-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.culture-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

footer {
    background-color: var(--secondary-dark);
    padding: 40px 0;
    border-top: 1px solid var(--secondary-light);
    margin-top: 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-brand h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

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

.footer-links h5 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

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

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-contact h5 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.footer-contact p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--secondary-light);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    header .container {
        align-items: center;
        text-align: center;
    }

    .logo {
        align-items: center;
    }

    nav ul {
        justify-content: center;
    }

    .hero-content h2 {
        font-size: 24px;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .features-grid,
    .news-list,
    .info-grid,
    .team-grid,
    .culture-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .btn.secondary {
        margin-left: 0;
        margin-top: 15px;
    }

    .guide-section,
    .section {
        padding: 20px;
    }
}