/* 全局样式 */
:root {
    --primary-color: #ff6b00;
    --secondary-color: #3a0ca3;
    --accent-color: #4361ee;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --success-color: #38b000;
    --warning-color: #ffb700;
    --danger-color: #d90429;
    --font-main: 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f8f9fa;
}

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

a {
    text-decoration: none;
    color: var(--accent-color);
    transition: all 0.3s ease;
}

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

a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section-title span {
    color: var(--primary-color);
}

.section-description {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
    color: var(--gray-color);
    font-size: 1.1rem;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 10px rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
    background-color: #ff8534;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 107, 0, 0.4);
    color: white;
}

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* 头部导航 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    max-width: 200px;
}

.logo a {
    display: block;
}

.logo img {
    height: 50px;
    width: auto;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-weight: 600;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 5px;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a:hover::after {
    width: 100%;
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

/* 广告横幅 */
.ad-banner {
    padding: 20px 0;
    background-color: #f8f9fa;
    text-align: center;
    overflow: hidden;
}

.ad-banner img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
}

.ad-banner-secondary {
    background-color: white;
    margin: 30px 0;
}

/* 英雄区域 */
.hero {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e6f1 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 107, 0, 0.1) 0%, rgba(255, 107, 0, 0) 70%);
    z-index: 0;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    padding-right: 50px;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

/* 功能特性 */
.features {
    padding: 100px 0;
    background-color: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-color);
    font-size: 1rem;
}

/* 数据统计 */
.statistics {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.stats-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.stats-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
    text-align: center;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.latest-draw {
    margin-bottom: 20px;
}

.period {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    text-align: center;
}

.numbers {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
}

.number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
}

.sum-value {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
    color: var(--gray-color);
}

.countdown {
    text-align: center;
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-top: 20px;
}

#countdown-timer {
    font-weight: 700;
    color: var(--danger-color);
}

.hot-numbers, .cold-numbers {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.hot-number, .cold-number {
    display: flex;
    align-items: center;
    background: #f8f9fa;
    padding: 10px 15px;
    border-radius: 10px;
}

.hot-number .number, .cold-number .number {
    margin-right: 15px;
}

.hot-number .frequency {
    color: var(--danger-color);
    font-weight: 600;
}

.cold-number .frequency {
    color: var(--accent-color);
    font-weight: 600;
}

/* 最新文章板块 */
.articles {
    padding: 100px 0;
    background-color: white;
}

.articles-list {
    margin-top: 40px;
}

.article-item {
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 25px 30px;
    margin-bottom: 25px;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.article-item:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--primary-color);
}

.article-content h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-content h3 a {
    color: var(--dark-color);
    transition: color 0.3s ease;
}

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

.article-meta {
    display: flex;
    gap: 20px;
    color: var(--gray-color);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.article-meta i {
    margin-right: 5px;
    color: var(--primary-color);
}

.article-excerpt {
    color: var(--gray-color);
    margin-bottom: 15px;
    font-size: 0.95rem;
    line-height: 1.6;
}

.read-more {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
}

.read-more i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.read-more:hover i {
    transform: translateX(5px);
}

.view-more-container {
    text-align: center;
    margin-top: 40px;
}

/* 关于 */
.about {
    padding: 100px 0;
    background-color: white;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
}

.about-image {
    flex: 1;
    text-align: center;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.about-text p {
    margin-bottom: 15px;
    color: var(--gray-color);
}

.rules {
    margin-top: 30px;
}

.rule-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.rule-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.rule-item p {
    margin-bottom: 10px;
}

/* 用户评价 */
.testimonials {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.testimonial-slider {
    display: flex;
    overflow-x: auto;
    gap: 30px;
    padding: 20px 0;
    margin-top: 50px;
    scrollbar-width: none;
}

.testimonial-slider::-webkit-scrollbar {
    display: none;
}

.testimonial {
    min-width: 350px;
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.testimonial-content {
    position: relative;
    padding: 20px 0;
}

.testimonial-content::before {
    content: '"';
    position: absolute;
    top: 0;
    left: 0;
    font-size: 5rem;
    color: rgba(255, 107, 0, 0.1);
    line-height: 1;
}

.testimonial-content p {
    position: relative;
    z-index: 1;
    font-style: italic;
    color: var(--dark-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
    margin-top: 20px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 15px;
}

.author-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: var(--dark-color);
}

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

/* CTA */
.cta {
    padding: 80px 0;
    background: linear-gradient(45deg, var(--primary-color) 0%, #ff9e40 100%);
    text-align: center;
    color: white;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta .btn-primary {
    background-color: white;
    color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.cta .btn-primary:hover {
    background-color: var(--light-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
}

/* 页脚 */
footer {
    background-color: #2d2d2d;
    color: #bcbcbc;
    padding: 70px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 50px;
}

.footer-logo {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
}

.footer-logo p {
    margin-top: 20px;
    max-width: 300px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.link-group h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 10px;
}

.link-group h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
}

.link-group ul li {
    margin-bottom: 12px;
}

.link-group ul li a {
    color: #bcbcbc;
    transition: all 0.3s ease;
}

.link-group ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: #bcbcbc;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 50px;
    }
    
    .hero-content p {
        max-width: 100%;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        margin-bottom: 20px;
    }
    
    nav ul li {
        margin-left: 0;
        margin: 0 10px;
    }
    
    .cta-buttons {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .testimonial {
        min-width: 100%;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 5px;
    }
}