/* 每日大赛 - 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #e63946;
    --secondary-color: #1d3557;
    --accent-color: #f72585;
    --dark-bg: #0d1117;
    --light-bg: #f8f9fa;
    --text-dark: #212529;
    --text-light: #ffffff;
    --border-color: #dee2e6;
    --gradient-primary: linear-gradient(135deg, #e63946 0%, #f72585 100%);
    --gradient-dark: linear-gradient(135deg, #1d3557 0%, #0d1117 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "微软雅黑", sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
}

a {
    text-decoration: none;
    color: inherit;
}

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

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

/* ==================== 头部样式 ==================== */
header {
    background: var(--gradient-dark);
    color: var(--text-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.header-top {
    background: rgba(0,0,0,0.3);
    padding: 8px 0;
    font-size: 13px;
}

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

.header-info {
    display: flex;
    gap: 20px;
}

.header-info span {
    opacity: 0.9;
}

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

.header-social a {
    color: var(--text-light);
    opacity: 0.8;
    transition: opacity 0.3s;
}

.header-social a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.header-main {
    padding: 15px 0;
}

.header-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 50px;
    width: auto;
    border-radius: 8px;
}

.logo-text h1 {
    font-size: 24px;
    font-weight: bold;
    margin: 0;
    color: var(--text-light);
}

.logo-text p {
    font-size: 12px;
    opacity: 0.8;
    margin: 0;
}

/* 导航样式 */
nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

nav li {
    list-style: none;
}

nav a {
    color: var(--text-light);
    font-weight: 500;
    transition: color 0.3s;
    padding: 5px 0;
    font-size: 15px;
}

nav a:hover,
nav a.active {
    color: var(--accent-color);
}

/* ==================== 搜索框样式 ==================== */
.search-bar {
    background: var(--gradient-primary);
    padding: 20px 0;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    gap: 10px;
}

.search-container input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    outline: none;
}

.search-container button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}

.search-container button:hover {
    background: var(--dark-bg);
}

/* ==================== Hero Banner ==================== */
.hero-banner {
    position: relative;
    height: 500px;
    overflow: hidden;
    background: var(--gradient-dark);
}

.hero-banner > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    width: 90%;
    max-width: 800px;
}

.hero-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 14px 35px;
    border-radius: 30px;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(230,57,70,0.4);
}

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

.btn-secondary:hover {
    background: var(--light-bg);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

/* ==================== 统计数据区域 ==================== */
.stats-section {
    background: white;
    padding: 60px 0;
    border-bottom: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 42px;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: bold;
}

.stat-item p {
    font-size: 16px;
    color: #666;
}

/* ==================== 认证区域 ==================== */
.certifications-section {
    background: var(--light-bg);
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.cert-item {
    background: white;
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.cert-item:hover {
    transform: translateY(-5px);
}

.cert-badge {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin: 0 auto 15px;
}

.cert-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--secondary-color);
}

.cert-item p {
    font-size: 14px;
    color: #666;
}

/* 合作伙伴 */
.partners-section {
    text-align: center;
    padding: 30px 0;
    background: white;
    border-radius: 12px;
    margin-top: 20px;
}

.partners-section h3 {
    font-size: 18px;
    color: #666;
    margin-bottom: 15px;
}

.partners-list {
    font-size: 16px;
    color: var(--secondary-color);
    font-weight: 500;
}

/* ==================== 视频区域 ==================== */
.videos-section {
    padding: 60px 0;
    background: white;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.video-thumbnail {
    position: relative;
    height: 180px;
    overflow: hidden;
}

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

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(230,57,70,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-card:hover .play-button {
    opacity: 1;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--secondary-color);
    line-height: 1.4;
}

.video-meta {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: #888;
    margin-bottom: 10px;
}

.video-desc {
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

/* ==================== 团队区域 ==================== */
.team-section {
    padding: 60px 0;
    background: var(--light-bg);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.team-member {
    background: white;
    border-radius: 12px;
    padding: 25px 20px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

.team-member:hover {
    transform: translateY(-5px);
}

.team-member img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid var(--primary-color);
}

.team-member h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--secondary-color);
}

.team-member .title {
    font-size: 13px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.credentials {
    text-align: left;
    margin-bottom: 15px;
}

.credentials h4 {
    font-size: 13px;
    color: #666;
    margin-bottom: 8px;
}

.credentials ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.credentials li {
    font-size: 12px;
    color: #888;
    padding: 3px 0;
}

.credentials li::before {
    content: "✓ ";
    color: var(--primary-color);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 15px;
}

.social-links a {
    width: 32px;
    height: 32px;
    background: var(--light-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--secondary-color);
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary-color);
    color: white;
}

/* ==================== 用户评价区域 ==================== */
.testimonials-section {
    padding: 60px 0;
    background: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 40px;
}

.testimonial-card {
    background: var(--light-bg);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.05);
}

.rating {
    color: #ffc107;
    font-size: 18px;
    margin-bottom: 15px;
}

.testimonial-text {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    margin-bottom: 20px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-author img {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
}

.testimonial-author h4 {
    font-size: 15px;
    margin-bottom: 3px;
    color: var(--secondary-color);
}

.testimonial-author p {
    font-size: 12px;
    color: #888;
}

/* ==================== CTA区域 ==================== */
.cta-section {
    background: var(--gradient-primary);
    padding: 60px 0;
    text-align: center;
    color: white;
}

.cta-section h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.cta-buttons .btn-primary:hover {
    background: var(--light-bg);
}

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

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

/* ==================== 页脚样式 ==================== */
footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-light);
}

.footer-col p {
    font-size: 14px;
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 15px;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-col a {
    color: #aaa;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--accent-color);
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
    transition: all 0.3s;
}

.footer-social a:hover {
    background: var(--primary-color);
    color: white;
}

.qr-codes {
    display: flex;
    gap: 15px;
}

.qr-codes img {
    width: 100px;
    height: 100px;
    border-radius: 8px;
    background: white;
    padding: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: #888;
    margin: 5px 0;
}

/* ==================== 内页通用样式 ==================== */
.page-header {
    background: var(--gradient-dark);
    padding: 60px 0;
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

.breadcrumb {
    background: white;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb a {
    color: var(--primary-color);
}

.breadcrumb span {
    color: #666;
}

.page-content {
    padding: 60px 0;
}

/* ==================== 案例页面 ==================== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.case-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    padding: 25px;
}

.case-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.case-stats {
    display: flex;
    gap: 20px;
    margin: 15px 0;
}

.case-stats span {
    font-size: 14px;
    color: var(--primary-color);
}

.case-quote {
    background: var(--light-bg);
    padding: 15px;
    border-radius: 8px;
    font-style: italic;
    color: #666;
    margin-top: 15px;
}

/* ==================== 价格页面 ==================== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.pricing-card {
    background: white;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s;
}

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

.pricing-card.featured {
    border: 2px solid var(--primary-color);
}

.pricing-card.featured::before {
    content: "推荐";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 14px;
}

.pricing-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.pricing-card .price {
    font-size: 42px;
    color: var(--primary-color);
    margin: 20px 0;
}

.pricing-card .price span {
    font-size: 16px;
    color: #666;
}

.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 25px 0;
    text-align: left;
}

.pricing-card li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    color: #666;
}

.pricing-card li::before {
    content: "✓ ";
    color: var(--primary-color);
}

/* ==================== 联系页面 ==================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--secondary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
}

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

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: var(--accent-color);
}

.contact-info {
    background: var(--light-bg);
    padding: 40px;
    border-radius: 12px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 25px;
    color: var(--secondary-color);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-item .icon {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.contact-item h4 {
    font-size: 16px;
    margin-bottom: 5px;
    color: var(--secondary-color);
}

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

/* 服务流程 */
.process-section {
    padding: 60px 0;
    background: white;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    position: relative;
}

.process-steps::before {
    content: "";
    position: absolute;
    top: 30px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--border-color);
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
    flex: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 15px;
}

.process-step h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--secondary-color);
}

.process-step p {
    font-size: 13px;
    color: #666;
    max-width: 150px;
    margin: 0 auto;
}

/* ==================== 关于页面 ==================== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.about-text p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-image img {
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* FAQ样式 */
.faq-section {
    padding: 60px 0;
    background: var(--light-bg);
}

.faq-list {
    max-width: 800px;
    margin: 40px auto 0;
}

.faq-item {
    background: white;
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    color: var(--secondary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: "+";
    font-size: 20px;
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 25px 20px;
    color: #666;
    line-height: 1.7;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-top .container {
        flex-direction: column;
        gap: 10px;
    }
    
    .header-main .container {
        flex-direction: column;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .hero-banner {
        height: 400px;
    }
    
    .hero-content h2 {
        font-size: 32px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-item h3 {
        font-size: 32px;
    }
    
    .cert-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .about-intro {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
        gap: 30px;
    }
    
    .process-steps::before {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-banner {
        height: 350px;
    }
    
    .hero-content h2 {
        font-size: 26px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .stat-item h3 {
        font-size: 28px;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-codes {
        flex-direction: column;
        align-items: center;
    }
}