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

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

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

/* 顶部横幅 */
.top-banner {
    background: linear-gradient(90deg, #1a237e, #283593);
    color: #fff;
    padding: 10px 0;
    text-align: center;
    font-size: 14px;
}

/* 顶部导航 */
.header {
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(26, 35, 126, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo h1 {
    font-size: 28px;
    color: #1a237e;
    font-weight: 700;
    margin-bottom: 5px;
}

.logo p {
    font-size: 13px;
    color: #666;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: #333;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav a:hover {
    color: #1a237e;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1a237e;
    transition: width 0.3s;
}

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

/* 主视觉区 */
.hero {
    background: linear-gradient(135deg, #1a237e 0%, #283593 50%, #3949ab 100%);
    padding: 100px 20px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h2 {
    font-size: 44px;
    margin-bottom: 15px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-tagline {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
    letter-spacing: 3px;
}

.hero-phone-box {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 30px 50px;
    margin-bottom: 30px;
}

.phone-label {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 10px;
}

.phone-number {
    font-size: 42px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.hero-info {
    font-size: 15px;
    opacity: 0.85;
}

.hero-info p {
    margin-bottom: 5px;
}

/* 复制按钮 */
.copy-btn {
    background: #fff;
    color: #1a237e;
    border: none;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.copy-btn:hover {
    background: #e8eaf6;
    transform: scale(1.05);
}

.copy-btn:active {
    transform: scale(0.95);
}

/* 数据统计 */
.stats {
    background: #fff;
    padding: 50px 20px;
    margin-top: -30px;
    position: relative;
    z-index: 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #1a237e;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 14px;
    color: #666;
}

/* 通用标题样式 */
h3 {
    text-align: center;
    font-size: 32px;
    color: #1a237e;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 15px;
    margin-bottom: 50px;
}

/* 核心优势 */
.advantages {
    padding: 80px 20px;
    background: #f5f7fa;
}

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

.adv-item {
    background: #fff;
    padding: 35px 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(26, 35, 126, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.adv-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(26, 35, 126, 0.15);
}

.adv-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.adv-item h4 {
    font-size: 18px;
    color: #1a237e;
    margin-bottom: 15px;
}

.adv-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

/* 业务服务 */
.services {
    padding: 80px 20px;
    background: #fff;
}

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

.service-card {
    background: #f5f7fa;
    padding: 35px;
    border-radius: 10px;
    border-top: 4px solid #1a237e;
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.service-header h4 {
    font-size: 20px;
    color: #1a237e;
}

.service-icon {
    font-size: 36px;
}

.service-card p {
    font-size: 14px;
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-card ul {
    list-style: none;
}

.service-card ul li {
    font-size: 14px;
    color: #666;
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    border-bottom: 1px dashed #e0e0e0;
}

.service-card ul li:last-child {
    border-bottom: none;
}

.service-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #1a237e;
    font-weight: 700;
}

/* 联系方式 */
.contact {
    padding: 80px 20px;
    background: linear-gradient(135deg, #1a237e, #283593);
    color: #fff;
}

.contact h3 {
    color: #fff;
}

.contact .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s;
}

.contact-card:hover {
    transform: translateY(-5px);
}

.contact-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

.contact-card h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.contact-value {
    font-size: 26px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.contact-note {
    font-size: 13px;
    opacity: 0.8;
    margin-top: 15px;
}

.contact-info-box {
    background: rgba(255, 255, 255, 0.1);
    padding: 35px;
    border-radius: 10px;
    text-align: center;
}

.contact-info-box h4 {
    font-size: 20px;
    margin-bottom: 25px;
    color: #fff;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.info-item {
    font-size: 15px;
}

.info-label {
    opacity: 0.8;
}

.info-value {
    font-weight: 600;
}

/* 关于我们 */
.about {
    padding: 80px 20px;
    background: #f5f7fa;
}

.about-content {
    max-width: 850px;
    margin: 0 auto;
}

.about-content p {
    font-size: 15px;
    color: #555;
    line-height: 2;
    margin-bottom: 20px;
    text-indent: 2em;
}

.about-content strong {
    color: #1a237e;
}

/* 资讯动态 */
.articles {
    padding: 80px 20px;
    background: #fff;
}

.article-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.article-item {
    background: #f5f7fa;
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid #1a237e;
    transition: box-shadow 0.3s;
}

.article-item:hover {
    box-shadow: 0 4px 15px rgba(26, 35, 126, 0.1);
}

.article-item h4 {
    font-size: 17px;
    color: #1a237e;
    margin-bottom: 15px;
    line-height: 1.5;
}

.article-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 15px;
}

.read-more {
    color: #1a237e;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
}

.read-more:hover {
    color: #283593;
}

/* 底部 */
.footer {
    background: #0d1b4a;
    color: #ccc;
    padding: 50px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-info h4,
.footer-links h4 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-info p {
    font-size: 14px;
    margin-bottom: 10px;
}

.footer-links {
    display: flex;
    flex-direction: column;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    padding: 6px 0;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

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

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

/* 悬浮按钮 */
.float-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.float-btn {
    background: linear-gradient(135deg, #1a237e, #283593);
    color: #fff;
    border: 2px solid #fff;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(26, 35, 126, 0.4);
    transition: all 0.3s;
    animation: pulse 2s infinite;
}

.float-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(26, 35, 126, 0.6);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(26, 35, 126, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(26, 35, 126, 0.7);
    }
}

/* 弹窗 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    max-width: 500px;
    width: 90%;
    position: relative;
    border-top: 5px solid #1a237e;
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    color: #999;
    cursor: pointer;
    transition: color 0.3s;
}

.close-btn:hover {
    color: #1a237e;
}

.modal-content h3 {
    font-size: 24px;
    color: #1a237e;
    margin-bottom: 25px;
    text-align: center;
}

.modal-contact p {
    font-size: 15px;
    color: #333;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.modal-contact strong {
    color: #1a237e;
    min-width: 80px;
}

.modal-note {
    text-align: center;
    color: #888;
    font-size: 13px;
    margin-top: 20px;
}

/* 响应式 */
@media (max-width: 992px) {
    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .service-list {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .article-list {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    .hero-content h2 {
        font-size: 28px;
    }
    .phone-number {
        font-size: 28px;
    }
    .hero-phone-box {
        padding: 20px 30px;
    }
    .adv-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
    .logo h1 {
        font-size: 22px;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}