/* 重置默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* 通用容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
.header {
    background: #f7faff;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #e6eaf2;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo img {
    height: 40px;
}

.main-nav ul {
    display: flex;
    gap: 36px;
    list-style: none;
}

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

.main-nav a {
    color: #222;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    padding: 6px 18px;
    border-radius: 20px;
    transition: background 0.2s, color 0.2s;
}

.main-nav a.active,
.main-nav a:hover {
    background: #1890ff;
    color: #fff;
}

.nav-login-btn {
    background: #fff;
    color: #1890ff;
    border: 1.5px solid #1890ff;
    border-radius: 20px;
    padding: 6px 28px;
    font-weight: 600;
    font-size: 16px;
    margin-left: 24px;
    transition: background 0.2s, color 0.2s;
    text-decoration: none;
}

.nav-login-btn:hover {
    background: #1890ff;
    color: #fff;
}

/* Banner区域 */
.banner {
    position: relative;
    height: 600px;
    background: #f5f7fa;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    left: 0; top: 0; right: 0; bottom: 0;
    background: linear-gradient(120deg, #eaf6ff 0%, #f7faff 100%);
    opacity: 0.85;
    z-index: 0;
    pointer-events: none;
}

.banner-content {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 20px;
}

.banner-text {
    max-width: 600px;
    z-index: 1;
}

.banner-bottom-text {
    position: absolute;
    bottom: 40px;
    right: 40px;
    color: #333;
    font-size: 18px;
    font-weight: 500;
}

.banner h1 {
    font-size: 48px;
    color: #333;
    margin-bottom: 20px;
}

.banner-subtitle {
    font-size: 24px;
    color: #666;
    margin-bottom: 30px;
}

.banner p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.highlight {
    color: #1890ff;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: #1890ff;
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #40a9ff;
    transform: translateY(-2px);
}

.banner-img {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.banner-img img {
    /*width: 380px;*/
    width: 100%;
    max-width: 90vw;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(24,144,255,0.08);
}

.banner-bg-decor {
    position: absolute;
    left: 0; right: 0; top: 0; bottom: 0;
    background: url('https://via.placeholder.com/1200x200/edf6ff/edf6ff?text=') repeat-x top center;
    opacity: 0.12;
    z-index: 0;
    pointer-events: none;
}

/* 产品特点 */
.features {
    padding: 80px 0;
    background: #f5f5f5;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
}

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

.feature-item {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s;
}

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

.feature-item i {
    font-size: 40px;
    color: #1890ff;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

/* 页脚 */
.footer {
    background: #0a1623;
    color: #fff;
    padding: 40px 0 0 0;
    font-size: 15px;
}

.footer-container {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
    flex-wrap: wrap;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 18px;
}

.footer-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    opacity: 0.85;
    transition: color 0.2s, opacity 0.2s;
}

.footer-nav a:hover {
    color: #1890ff;
    opacity: 1;
}

.footer-info {
    color: #b3c6e0;
    font-size: 14px;
    line-height: 1.8;
    max-width: 320px;
}

/* 响应式设计 */
@media (max-width: 1100px) {
    .banner-content { flex-direction: column; text-align: center; }
    .banner-img { justify-content: center; margin-top: 24px; }
    .advantage-grid { grid-template-columns: 1fr; }
    .advantage-img { grid-row: auto; grid-column: auto; justify-content: center; margin-top: 24px; }
}

@media (max-width: 900px) {
    .footer-container { flex-direction: column; align-items: center; text-align: center; gap: 24px; }
    .reason-bg-map { width: 98vw; height: 180px; top: 80px; }
    .carousel-side-img img { width: 80px; height: 80px; margin-left: 8px; }
}

@media (max-width: 768px) {
    .header .container, .nav-container { flex-direction: column; height: auto; padding: 10px 0; }
    .main-nav ul { flex-direction: column; gap: 10px; }
    .nav-login-btn { margin: 12px 0 0 0; }
    .banner {
        height: 500px;
    }
    .banner h1 {
        font-size: 36px;
    }
    .banner-subtitle {
        font-size: 20px;
    }
    .banner-bottom-text {
        font-size: 16px;
        bottom: 20px;
        right: 20px;
    }
    .banner-content { flex-direction: column; min-height: 320px; }
    .banner-img img { width: 90vw; max-width: 320px; }
    .advantage-section, .carousel-section, .reason-section { padding: 32px 0; }
    .carousel-card { flex-direction: column; padding: 18px 10px; gap: 12px; }
    .carousel-btn.prev { left: 0; }
    .carousel-btn.next { right: 0; }
    .reason-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
}

@media (max-width: 500px) {
    .reason-grid { grid-template-columns: 1fr; }
    .banner-text h1 { font-size: 22px; }
    .btn-primary { font-size: 15px; padding: 10px 18px; }
}

/* 智能运营更智能区域 */
.section-intelligent {
    background: #fff;
    padding: 60px 0 40px 0;
    position: relative;
}
.intelligent-title {
    text-align: center;
    font-size: 32px;
    font-weight: 900;
    color: #222;
    margin-bottom: 36px;
}
.intelligent-container {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 48px;
}
.intelligent-left {
    flex: 1.2;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.intelligent-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px 32px;
}
.intelligent-card {
    background: #f7faff;
    border-radius: 14px;
    box-shadow: 0 2px 12px rgba(24,144,255,0.06);
    padding: 24px 20px 18px 20px;
    min-height: 110px;
    transition: box-shadow 0.2s, transform 0.2s;
}
.intelligent-card:hover {
    box-shadow: 0 8px 32px rgba(24,144,255,0.12);
    transform: translateY(-2px) scale(1.03);
}
.intelligent-card h3 {
    font-size: 17px;
    color: #1890ff;
    font-weight: 700;
    margin-bottom: 10px;
}
.intelligent-card p {
    color: #333;
    font-size: 14px;
    line-height: 1.7;
}
.intelligent-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.intelligent-right img {
    width: 400px;
    max-width: 98vw;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(24,144,255,0.10);
}
.reason-title {
    text-align: center;
    font-size: 28px;
    font-weight: 800;
    color: #222;
    margin-bottom: 8px;
    position: relative;
    z-index: 1;
}
.reason-section .en {
    text-align: center;
    color: #8ca6c7;
    font-size: 15px;
    margin-bottom: 36px;
    position: relative;
    z-index: 1;
}
.reason-section { position: relative; overflow: hidden; }
.reason-bg-map {
    position: absolute;
    left: 50%;
    top: 0;
    width: 100%;
    height: 100%;
    background: url('images/jhk-20223632588.png') no-repeat center/cover;
    opacity: 0.08;
    transform: translateX(-50%);
    z-index: 0;
    pointer-events: none;
}
.reason-grid { position: relative; z-index: 1; }
@media (max-width: 1100px) {
    .intelligent-container { flex-direction: column; align-items: center; gap: 32px; }
    .intelligent-right img { margin-top: 18px; }
}
@media (max-width: 768px) {
    .intelligent-grid { grid-template-columns: 1fr; gap: 16px; }
    .intelligent-right img { width: 98vw; max-width: 340px; }
    .section-intelligent { padding: 32px 0 18px 0; }
}

/* 轮播区优化 */
.carousel-section {
    background: #1890ff;
    padding: 60px 0 60px 0;
    position: relative;
    height: 550px;
}
.carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}
.carousel-track {
    position: relative;
    width: 100%;
    min-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.carousel-item {
    position: absolute;
    left: 0; top: 0; width: 100%;
    opacity: 0;
    z-index: 0;
    pointer-events: none;
    transition: opacity 0.5s;
    display: flex;
    justify-content: center;
}
.carousel-item.active {
    opacity: 1;
    z-index: 1;
    pointer-events: auto;
}
.carousel-card {
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(24,144,255,0.13);
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 36px 48px;
    min-width: 0;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
    transition: box-shadow 0.2s, transform 0.2s;
}
.carousel-card:hover {
    box-shadow: 0 16px 48px rgba(24,144,255,0.18);
    transform: translateY(-4px) scale(1.03);
}
.carousel-img img {
    width: 180px;
    height: 360px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(24,144,255,0.10);
    background: #eaf6ff;
}
.carousel-content {
    flex: 1;
}
.carousel-content h3 {
    color: #1890ff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}
.carousel-content p {
    color: #333;
    font-size: 15px;
    line-height: 1.7;
}
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    color: #1890ff;
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    font-size: 22px;
    box-shadow: 0 2px 8px rgba(24,144,255,0.10);
    cursor: pointer;
    z-index: 2;
    transition: background 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.carousel-btn:hover {
    background: #1765ad;
    color: #fff;
}
.carousel-btn.prev { left: -28px; }
.carousel-btn.next { right: -28px; }
.carousel-dots {
    text-align: center;
    margin-top: 198px;
}
.carousel-dot {
    display: inline-block;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    margin: 0 7px;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s, background 0.2s;
    border: 2px solid #1890ff;
}
.carousel-dot.active {
    background: #1765ad;
    opacity: 1;
    border-color: #1765ad;
}
@media (max-width: 1100px) {
    .carousel-card { padding: 24px 10px; gap: 18px; }
    .carousel { max-width: 98vw; }
}
@media (max-width: 768px) {
    .carousel-section { padding: 32px 0; }
    .carousel-card { flex-direction: column; align-items: flex-start; text-align: left; padding: 18px 6vw; gap: 10px; }
    .carousel-img img { width: 98vw; max-width: 320px; height: 100px; margin: 0 auto; }
    .carousel-btn.prev { left: 0; }
    .carousel-btn.next { right: 0; }
}
@media (max-width: 500px) {
    .carousel-card { padding: 10px 2vw; }
    .carousel-img img { max-width: 98vw; height: 80px; }
}

/* 选择理由区优化 */
.reason-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 32px 24px;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    text-align: center;
}
.reason-grid p{
    text-align: left;
}
@media (max-width: 1100px) {
    .reason-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 700px) {
    .reason-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 500px) {
    .reason-grid { grid-template-columns: 1fr; }
}

.reason-item img {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(24,144,255,0.10);
    background: #eaf6ff;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.reason-item:hover img {
    box-shadow: 0 8px 24px rgba(24,144,255,0.18);
}
.carousel-side-img img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 12px;
    margin-left: 18px;
    background: #f7faff;
    box-shadow: 0 2px 8px rgba(24,144,255,0.10);
}
@media (max-width: 900px) {
    .carousel-side-img img { width: 80px; height: 80px; margin-left: 8px; }
}