* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #64748b;
    --light: #f8fafc;
    --dark: #1e293b;
    --border: #e2e8f0;
    --success: #10b981;
}

body {
    color: var(--dark);
    line-height: 1.6;
}

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

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

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 15px;
}

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

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

.btn-outline {
    background: transparent;
    color: #ffffff;
    border: 1px solid #ffffff;
}

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

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

.btn-secondary:hover {
    background: #475569;
}

.navbar {
    position: sticky;
    top: 0;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 15px 0;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-buttons {
    display: flex;
    gap: 12px;
}

.hamburger {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

.banner {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 200px 0px 100px 0px;
    text-align: center;
}

.banner-title {
    font-size: 42px;
    line-height: 1.3;
    margin-bottom: 20px;
}

.banner-subtitle {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 40px;
}

.banner-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 45px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.feature-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.banner-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.section {
    padding: 70px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: var(--dark);
    position: relative;
}

.section-title::after {
    content: "";
    width: 60px;
    height: 4px;
    background: var(--primary);
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.intro-text {
    font-size: 16px;
    margin-bottom: 15px;
    line-height: 1.8;
}

.intro-text strong {
    color: var(--primary);
}

.intro-text ul {
    margin-left: 20px;
}

.intro-text li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 15px;
}

.intro-text li::before {
    content: "•";
    color: var(--primary);
    position: absolute;
    left: 0;
}

.intro-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 25px;
    border: 1px solid var(--border);
}

.intro-table th, .intro-table td {
    padding: 14px;
    text-align: center;
    border: 1px solid var(--border);
}

.intro-table th {
    background: var(--light);
    font-weight: 600;
}

.price-note {
    text-align: center;
    color: #dc2626;
    margin-bottom: 30px;
    font-weight: 500;
}

.price-table-wrapper {
    overflow-x: auto;
}

.price-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--border);
    min-width: 1100px;
}

.price-table th, .price-table td {
    padding: 16px;
    text-align: center;
    border: 1px solid var(--border);
}

.price-table th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

.price-table tr:nth-child(even) {
    background: var(--light);
}

.price-highlight {
    background: #fef2f2 !important;
    font-weight: bold;
    color: #dc2626;
    font-size: 16px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.feature-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
}

.feature-card-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 15px;
    object-fit: contain;
}

.feature-card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark);
}

.feature-card-desc {
    font-size: 14px;
    color: var(--secondary);
    line-height: 1.6;
}

.process-note {
    text-align: center;
    color: #dc2626;
    margin-bottom: 40px;
    font-weight: 500;
}

.process-steps {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 25px;
}

.step-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 15px;
    object-fit: contain;
}

.step-number {
    font-size: 20px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 10px;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.step-desc {
    font-size: 14px;
    color: var(--secondary);
}

.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.review-card {
    background: var(--light);
    border-radius: 10px;
    padding: 25px;
    border-left: 4px solid var(--primary);
}

.review-name {
    font-weight: 600;
    margin-bottom: 8px;
}

.review-star {
    color: #f59e0b;
    margin-bottom: 12px;
}

.review-content {
    font-size: 14px;
    color: var(--secondary);
    line-height: 1.7;
}

.review-buttons {
    text-align: center;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
}

.case-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 25px;
}

.case-industry {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 10px;
}

.case-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.case-desc {
    font-size: 14px;
    color: var(--secondary);
    line-height: 1.7;
}

.faq-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.faq-tab {
    padding: 10px 25px;
    background: var(--light);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.faq-tab.active {
    background: var(--primary);
    color: white;
}

.faq-item {
    margin-bottom: 15px;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
}

.faq-question {
    padding: 15px 20px;
    background: var(--light);
    display: flex;
    justify-content: space-between;
    cursor: pointer;
    font-weight: 500;
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s, padding 0.3s;
}

.faq-answer.show {
    padding: 15px 20px;
    max-height: 500px;
    border-top: 1px solid var(--border);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.news-card {
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s;
}

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

.news-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.news-content {
    padding: 20px;
}

.news-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-desc {
    font-size: 13px;
    color: var(--secondary);
    margin-bottom: 15px;
    line-height: 1.6;
}



@media (max-width: 992px) {
    .nav-links, .nav-buttons {
        display: none;
    }
    .hamburger {
        display: block;
    }
    .banner-title {
        font-size: 32px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .banner-features {
        flex-direction: column;
        align-items: center;
    }
    .banner-buttons {
        flex-direction: column;
        align-items: center;
    }
    .section-title {
        font-size: 26px;
    }
}