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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(4px);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1e3c72, #2b4c7c);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
}
.nav-links a {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover {
    color: #2b4c7c;
}

.menu-toggle {
    display: none;
    font-size: 1.8rem;
    background: none;
    border: none;
    cursor: pointer;
    color: #1e3c72;
}
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.98);
    z-index: 200;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
}
.mobile-menu.active {
    display: flex;
}
.mobile-menu a {
    font-size: 1.5rem;
    text-decoration: none;
    color: #1f2937;
    font-weight: 600;
}
.mobile-menu .close-menu {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
}

.btn {
    display: inline-block;
    background: #1e3c72;
    color: white;
    padding: 12px 28px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}
.btn:hover {
    background: #0f2b4f;
}
.btn-outline {
    background: transparent;
    border: 1px solid #1e3c72;
    color: #1e3c72;
}
.btn-outline:hover {
    background: #1e3c72;
    color: white;
}
.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.swiper {
    width: 100%;
    height: 550px;
}
.swiper-slide {
    background-size: cover;
    background-position: center;
    position: relative;
}
.slide-content {
    position: absolute;
    bottom: 30%;
    left: 10%;
    color: white;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    max-width: 500px;
}
.slide-content h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.slide-content p {
    font-size: 1.2rem;
    margin-bottom: 24px;
}
.slide-bg1 { background: linear-gradient(135deg, #1e3c72, #2a5298); }
.slide-bg2 { background: linear-gradient(135deg, #0f2b4f, #1e3c72); }
.slide-bg3 { background: linear-gradient(135deg, #2b4c7c, #1e3c72); }

section {
    padding: 80px 0;
    border-bottom: 1px solid #eef2f6;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    color: #111827;
}
.section-subtitle {
    text-align: center;
    color: #6b7280;
    margin-bottom: 48px;
    font-size: 1.05rem;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}
.card {
    background: #f9fafb;
    border-radius: 24px;
    padding: 32px 24px;
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
}
.card-icon {
    font-size: 2.8rem;
    margin-bottom: 20px;
}
.card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.industry-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
}
.tag {
    background: #eef2ff;
    padding: 8px 24px;
    border-radius: 60px;
    font-weight: 500;
    color: #1e3c72;
}

.logo-wall-wrapper {
    margin: 20px 0;
}
.logo-wall-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.logo-row {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: nowrap;
}
.logo-item {
    display: flex;
    align-items: center;
    justify-content: center;
}
/* Logo 图片样式 - 需要新增 */
.logo-item img {
    width: 120px;
    height: auto;
    max-height: 60px;
    object-fit: contain;
}

@media (max-width: 768px) {
    .logo-item img {
        width: 70px;
        max-height: 50px;
    }
}

@media (max-width: 480px) {
    .logo-item img {
        width: 60px;
        max-height: 45px;
    }
}
.logo-placeholder {
    width: 100px;
    height: 60px;
    background: #f3f4f6;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9ca3af;
    font-size: 0.8rem;
    transition: all 0.2s;
}
.logo-item:hover .logo-placeholder {
    background: #eef2ff;
    color: #1e3c72;
}
.divider-line {
    width: 1px;
    height: 40px;
    background: #e5e7eb;
    margin: 0 20px;
    flex-shrink: 0;
}

.solution-row {
    display: flex;
    flex-wrap: wrap;
    gap: 48px;
    justify-content: space-between;
    align-items: center;
}
.solution-text {
    flex: 1;
}
.solution-img {
    flex: 1;
    background: #f3f4f6;
    border-radius: 24px;
    padding: 32px 20px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 500;
    color: #1e3c72;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.faq-question-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.question-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: #1e3c72;
    border-radius: 50%;
    color: white;
    font-size: 1rem;
    font-weight: 600;
}
.faq-item {
    border-bottom: 1px solid #e5e7eb;
    padding: 20px 0;
}
.faq-question {
    font-weight: 700;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-answer {
    margin-top: 12px;
    color: #4b5563;
    display: none;
    margin-left: 40px;
}
.faq-item.active .faq-answer {
    display: block;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}
.blog-card {
    background: white;
    border: 1px solid #eef2f6;
    border-radius: 24px;
    overflow: hidden;
    transition: all 0.2s;
}
.blog-card:hover {
    border-color: #cbd5e1;
    transform: translateY(-4px);
}
.blog-content {
    padding: 24px;
}
.blog-date {
    color: #6b7280;
    font-size: 0.85rem;
    margin-bottom: 8px;
}
.blog-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}
.read-more {
    color: #1e3c72;
    font-weight: 600;
    text-decoration: none;
}
.view-all {
    text-align: center;
    margin-top: 20px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: #f9fafb;
    padding: 32px;
    border-radius: 32px;
}
input, textarea {
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 20px;
    border: 1px solid #d1d5db;
    border-radius: 28px;
    font-size: 1rem;
}
footer {
    background: #1f2937;
    color: #9ca3af;
    padding: 60px 0 30px;
}
.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-info {
    flex: 2;
}
.footer-info h3 {
    color: white;
    margin-bottom: 16px;
    font-size: 1.3rem;
}
.footer-contact {
    flex: 1;
}
.footer-contact h4 {
    color: white;
    margin-bottom: 16px;
}
.footer-contact p {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.footer-contact i {
    width: 24px;
    color: #6b7280;
}
.qrcode {
    width: 100px;
    height: 100px;
    background: #eef2ff;
    border-radius: 12px;
    margin-top: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #1e3c72;
}
.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
}
.footer-bottom a {
    color: #9ca3af;
    text-decoration: none;
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .nav-links { display: none; }
    .menu-toggle { display: block; }
    section { padding: 48px 0; }
    .section-title { font-size: 1.6rem; }
    .section-subtitle { font-size: 0.9rem; margin-bottom: 32px; }
    .grid-3 { gap: 20px; }
    .card { padding: 24px 16px; }
    .card h3 { font-size: 1.3rem; }
    .swiper { height: 188px; }
    .swiper-button-next, .swiper-button-prev { display: none !important; }
    .slide-content { bottom: 15%; left: 8%; }
    .slide-content h2 { font-size: 1.4rem; margin-bottom: 8px; }
    .slide-content p { font-size: 0.8rem; margin-bottom: 16px; }
    .slide-content .btn { padding: 8px 20px; font-size: 0.8rem; }
    .solution-img { font-size: 1rem; padding: 20px; }
    .solution-row { gap: 24px; }
    .logo-wall-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
        justify-items: center;
        align-items: center;
    }
    .logo-row { display: contents; }
    .divider-line { display: none; }
    .logo-placeholder { width: 70px; height: 50px; font-size: 0.7rem; }
    .faq-answer { margin-left: 20px; }
    .faq-question { font-size: 1rem; }
    .blog-grid { gap: 20px; margin-bottom: 32px; }
    .blog-content { padding: 16px; }
    .blog-title { font-size: 1.1rem; }
    .footer-content { flex-direction: column; gap: 24px; }
    .footer-info h3 { font-size: 1.2rem; }
}

@media (max-width: 480px) {
    .logo-wall-grid { gap: 20px 10px; }
    .logo-placeholder { width: 60px; height: 45px; font-size: 0.6rem; }
}
.qrcode {
    width: 100px;
    height: 100px;
    background: #ffffff;
    border-radius: 12px;
    margin-top: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

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

/* 轮播图分页器（小圆点）自定义样式 */
.swiper-pagination {
    bottom: 3px !important;
}

.swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.9) !important;
    opacity: 1;
    margin: 0 6px !important;
}

.swiper-pagination-bullet-active {
    background: #007aff !important;
    width: 24px;
    border-radius: 5px;
}

/* 手机端适配 */
@media (max-width: 768px) {
    .swiper-pagination-bullet {
        width: 8px;
        height: 8px;
        margin: 0 4px !important;
    }
    .swiper-pagination-bullet-active {
        width: 20px;
    }
}