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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 15px rgba(220, 38, 38, 0.3);
}

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

.logo {
    color: white;
    font-size: 28px;
    font-weight: bold;
    text-decoration: none;
    display: flex;
    align-items: center;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.logo i {
    margin-right: 10px;
    font-size: 32px;
    animation: pulse 2s ease-in-out infinite;
}

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

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

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 8px 15px;
    border-radius: 20px;
}

.nav-links a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.2);
}

.hero {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    padding: 180px 0 120px;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 20px;
    font-weight: 700;
    position: relative;
    z-index: 1;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

.hero p {
    font-size: 22px;
    margin-bottom: 50px;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-btn {
    display: inline-block;
    background: white;
    color: #dc2626;
    padding: 16px 50px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    margin: 0 15px;
    position: relative;
    z-index: 1;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

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

.cta-btn-secondary:hover {
    background: white;
    color: #dc2626;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 38px;
    margin-bottom: 60px;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #dc2626, #f97316);
    margin: 20px auto 0;
    border-radius: 2px;
}

.section-title span {
    color: #dc2626;
}

.hot-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.hot-item {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border-left: 4px solid #dc2626;
}

.hot-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.15);
}

.hot-item .hot-tag {
    display: inline-block;
    background: #fee2e2;
    color: #dc2626;
    padding: 5px 14px;
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 15px;
    font-weight: 600;
}

.hot-item h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: #333;
    line-height: 1.4;
}

.hot-item p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

.hot-item .hot-meta {
    display: flex;
    justify-content: space-between;
    color: #999;
    font-size: 13px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(220, 38, 38, 0.15);
}

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

.news-card .news-content {
    padding: 25px;
}

.news-card .news-category {
    display: inline-block;
    background: #fee2e2;
    color: #dc2626;
    padding: 5px 12px;
    border-radius: 12px;
    font-size: 12px;
    margin-bottom: 12px;
}

.news-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: #333;
    line-height: 1.4;
}

.news-card p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card .news-meta {
    display: flex;
    justify-content: space-between;
    color: #999;
    font-size: 13px;
}

.stats {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    padding: 70px 0;
    margin-top: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
    color: white;
}

.stat-item .number {
    font-size: 52px;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-item .label {
    font-size: 16px;
    opacity: 0.9;
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.tag-item {
    background: white;
    padding: 10px 20px;
    border-radius: 25px;
    color: #666;
    font-size: 14px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.tag-item:hover {
    background: #dc2626;
    color: white;
    transform: translateY(-2px);
}

.tag-item.hot {
    background: #fee2e2;
    color: #dc2626;
}

footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #dc2626;
}

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

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

.footer-section ul li a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #dc2626;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #666;
}

.page-header {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    padding: 120px 0 60px;
    text-align: center;
    color: white;
    margin-top: 70px;
}

.page-header h1 {
    font-size: 44px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.95;
}

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

.about-content img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.15);
}

.about-content h2 {
    font-size: 34px;
    margin-bottom: 25px;
    color: #333;
}

.about-content h2 span {
    color: #dc2626;
}

.about-content p {
    color: #666;
    line-height: 1.9;
    margin-bottom: 20px;
    font-size: 16px;
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, #dc2626, #f97316);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding: 45px 0;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    padding-right: 70px;
    text-align: right;
}

.timeline-item:nth-child(even) {
    padding-left: 70px;
    margin-left: 50%;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 20px;
    background: white;
    border: 3px solid #dc2626;
    border-radius: 50%;
    transform: translateY(-50%);
}

.timeline-item:nth-child(odd)::before {
    right: -10px;
}

.timeline-item:nth-child(even)::before {
    left: -10px;
}

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.timeline-content .date {
    color: #dc2626;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: #333;
}

.timeline-content p {
    color: #666;
    line-height: 1.7;
}

.submit-form {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.submit-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.submit-form input,
.submit-form textarea,
.submit-form select {
    width: 100%;
    padding: 16px;
    margin-bottom: 20px;
    border: 2px solid #eee;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.submit-form input:focus,
.submit-form textarea:focus,
.submit-form select:focus {
    outline: none;
    border-color: #dc2626;
}

.submit-form textarea {
    height: 200px;
    resize: vertical;
}

.submit-form button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #dc2626, #f97316);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(220, 38, 38, 0.35);
}

.submit-guide {
    max-width: 800px;
    margin: 0 auto;
}

.guide-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.06);
    display: flex;
    align-items: flex-start;
}

.guide-item .guide-number {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #dc2626, #f97316);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin-right: 25px;
    flex-shrink: 0;
}

.guide-item .guide-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.guide-item .guide-content p {
    color: #666;
    line-height: 1.7;
}

.ranking-list {
    max-width: 800px;
    margin: 0 auto;
}

.ranking-item {
    background: white;
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

.ranking-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(220, 38, 38, 0.12);
}

.ranking-item .rank-number {
    width: 40px;
    height: 40px;
    background: #f3f4f6;
    color: #666;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    margin-right: 20px;
}

.ranking-item .rank-number.top {
    background: linear-gradient(135deg, #dc2626, #f97316);
    color: white;
}

.ranking-item .rank-content {
    flex: 1;
}

.ranking-item .rank-content h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #333;
}

.ranking-item .rank-content p {
    font-size: 14px;
    color: #999;
}

.ranking-item .rank-hot {
    color: #dc2626;
    font-size: 14px;
    font-weight: 600;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.contact-item {
    background: white;
    padding: 35px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(220, 38, 38, 0.12);
}

.contact-item i {
    font-size: 42px;
    color: #dc2626;
    margin-bottom: 20px;
}

.contact-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #333;
}

.contact-item p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

.contact-form {
    max-width: 650px;
    margin: 0 auto;
    background: white;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 16px;
    margin-bottom: 20px;
    border: 2px solid #eee;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #dc2626;
}

.contact-form textarea {
    height: 160px;
    resize: vertical;
}

.contact-form button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #dc2626, #f97316);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(220, 38, 38, 0.35);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .hot-list,
    .news-grid,
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 60px !important;
        padding-right: 20px !important;
        margin-left: 0 !important;
        text-align: left !important;
    }
    
    .timeline-item::before {
        left: 10px !important;
        right: auto !important;
    }
}