/* 超航航空服务网站样式表 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Helvetica Neue', Helvetica, 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

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

/* 颜色变量定义 - World Star Aviation 风格 */
:root {
    --primary-blue: #215079;
    /* Deep Navy Blue */
    --secondary-blue: #1A3A60;
    /* Darker Navy */
    --accent-blue: #9BE0F5;
    /* Sky Blue */
    --accent-orange: #F5A623;
    /*保留用于强调 */
    --dark-blue: #0F2439;
    /* Very Dark Blue */
    --light-blue: #EAF8FD;
    /* Very Light Blue for backgrounds */
    --white: #FFFFFF;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-600: #555555;
    --gray-800: #333333;
    --text-dark: #212529;
    --text-light: #555555;

    --header-height: 80px;
}

/* 导航栏样式 - 现代航空风格 */
/* 导航栏样式 - 独立栏风格 */
.navbar {
    background: var(--primary-blue);
    /* 设置不透明的主色调背景 */
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: relative;
    /* 改为相对定位，使导航栏成为独立一栏 */
    z-index: 1000;
    transition: all 0.4s ease;
    height: var(--header-height);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--white);
    /* White on blue background */
    font-weight: 700;
    font-size: 24px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.logo:hover {
    opacity: 0.9;
}

.logo-img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-family: 'Helvetica Neue', sans-serif;
}

.nav-menu {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    /* Right align as per reference */
    margin-right: 40px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--white);
    /* White on blue background */
    font-weight: 600;
    font-size: 17px;
    /* 继续放大字体，使导航文字更加醒目 */
    transition: all 0.3s ease;
    padding: 10px 0;
    position: relative;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-btn {
    background: var(--accent-blue);
    color: var(--primary-blue);
    border: none;
    padding: 10px 24px;
    border-radius: 0;
    /* Square/sharp edges for corporate look */
    font-weight: 700;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.contact-btn:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-1px);
}

.navbar.scrolled .contact-btn {
    background: var(--primary-blue);
    color: var(--white);
}

.navbar.scrolled .contact-btn:hover {
    background: var(--accent-blue);
    color: var(--primary-blue);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    transition: all 0.3s ease;
}

/* 理念展示Banner样式 */
/* 理念展示Banner样式 - World Star Aviation 风格 */
.hero-banner {
    height: 100vh;
    min-height: 700px;
    position: relative;
    overflow: hidden;
    margin-top: 0;
    /* 移除margin-top，因为导航栏现在是相对定位，不需要避免重叠 */
    background: url('../images/banner-bg.jpg') center/cover no-repeat;
    background-attachment: fixed;
    /* Parallax effect */
}



/* Ensure banner overlay is subtle */
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    /* Lighter overlay for brighter imagery */
    z-index: 1;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0.6) 100%);
}

.banner-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: flex-end;
    /* Align content to bottom as per reference/modern style */
    padding-bottom: 120px;
    color: var(--white);
}

.banner-title {
    font-size: 4.5rem;
    /* Larger font size */
    font-weight: 800;
    /* 增加字重，更突出 */
    margin-bottom: 15px;
    line-height: 1.05;
    /* 减小行高，更紧凑有力 */
    text-transform: uppercase;
    letter-spacing: -1px;
    text-shadow: 0 3px 15px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.7);
    /* 增强文字阴影，提高对比度 */
    animation: fadeInUp 1s ease;
    color: var(--white);
    /* 确保文字颜色为纯白 */
    opacity: 1;
    /* 确保完全不透明 */
}

.banner-subtitle {
    font-size: 1.8rem;
    font-weight: 600;
    /* 增加字重，从300改为600，更突出 */
    margin-bottom: 30px;
    opacity: 1;
    /* 确保完全不透明 */
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease 0.2s both;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    /* 增加文字阴影，提高对比度 */
    color: var(--white);
    /* 确保文字颜色为纯白 */
}

.banner-desc {
    font-size: 1.15rem;
    /* 略增大字体 */
    line-height: 1.8;
    max-width: 700px;
    /* 增加最大宽度，显示更多内容 */
    margin-bottom: 40px;
    opacity: 0.98;
    /* 提高不透明度，更清晰 */
    font-weight: 500;
    /* 增加字重，从400改为500，更清晰 */
    animation: fadeInUp 1s ease 0.4s both;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
    /* 增强文字阴影，提高对比度 */
    color: var(--white);
    /* 确保文字颜色为纯白 */
}

.banner-actions {
    display: flex;
    gap: 20px;
    animation: fadeInUp 1s ease 0.6s both;
}

.primary-btn {
    display: inline-block;
    background: var(--accent-blue);
    color: var(--primary-blue);
    padding: 16px 40px;
    border-radius: 0;
    /* Square buttons */
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.3s ease;
    border: 2px solid var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.primary-btn:hover {
    background: var(--white);
    border-color: var(--white);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.secondary-btn {
    display: inline-block;
    background: transparent;
    color: var(--white);
    padding: 16px 40px;
    border-radius: 0;
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.3s ease;
    border: 2px solid var(--white);
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(5px);
}

.secondary-btn:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    text-align: center;
    opacity: 0.8;
    animation: bounce 2s infinite;
    z-index: 2;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 2px;
}

.scroll-arrow {
    font-size: 1.5rem;
    margin-top: 5px;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) translateX(-50%);
    }

    40% {
        transform: translateY(-10px) translateX(-50%);
    }

    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* 核心业务速览样式 - World Star Aviation 风格 */
.services-preview {
    padding: 120px 0;
    background: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

.section-desc {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 80px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.service-card {
    background: var(--white);
    padding: 0;
    border-radius: 0;
    /* Corporate square look */
    box-shadow: none;
    /* Clean start */
    text-align: left;
    cursor: pointer;
    transition: all 0.4s ease;
    border: 1px solid var(--gray-200);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
    border-color: transparent;
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

.service-card:hover::after {
    width: 100%;
}

.service-image {
    height: 200px;
    margin-bottom: 25px;
    overflow: hidden;
    border-radius: 0;
    box-shadow: none;
    position: relative;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    filter: grayscale(20%);
    /* Subtle professional look */
}

.service-card:hover .service-image img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.service-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 15px;
    line-height: 1.3;
    padding: 0 25px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.service-desc {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.95rem;
    flex-grow: 1;
    padding: 0 25px 25px;
}

/* 企业实力展示样式 - World Star Aviation 风格 */
.company-strength {
    padding: 120px 0;
    background: var(--primary-blue);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

/* Subtle abstract lines instead of grid */
.company-strength::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 60%);
    transform: rotate(30deg);
}

.company-strength .section-title {
    color: var(--white);
    position: relative;
    z-index: 2;
}

.company-strength .section-desc {
    color: rgba(255, 255, 255, 0.8);
    position: relative;
    z-index: 2;
}

.strength-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    /* Connected layout */
    margin: 80px 0;
    position: relative;
    z-index: 2;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.strength-item {
    text-align: center;
    position: relative;
    padding: 40px 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.strength-item:last-child {
    border-right: none;
}

.strength-item::before {
    display: none;
    /* Remove circular background */
}

.strength-number {
    font-size: 3.5rem;
    font-weight: 300;
    /* Thinner weight for elegance */
    margin-bottom: 15px;
    color: var(--accent-blue);
    font-family: 'Helvetica Neue', sans-serif;
}

.strength-label {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.strength-desc {
    font-size: 0.9rem;
    opacity: 0.6;
}





/* 底部样式 - 重新排版设计 */
.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: 30px 0 20px;
    font-size: 0.9rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-info {
    max-width: 400px;
}

.footer-logo {
    margin-bottom: 0;
    font-weight: 700;
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-links {
    text-align: right;
}

.footer-links h4 {
    margin-bottom: 15px; /* Reduced from 20px */
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
    font-weight: 700;
    color: var(--accent-blue);
    display: inline-block;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 20px; /* Reduced gap */
    flex-wrap: wrap;
    justify-content: flex-end;
}

.footer-links li {
    margin: 0;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.7;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent-blue);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0.6;
    font-size: 0.8rem;
    padding-top: 0; /* Removed padding */
    border-top: none; /* Removed border as it is in content now */
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom a {
    color: var(--white);
    text-decoration: none;
    margin-left: 15px; /* Changed to margin-left */
    margin-right: 0;
    transition: all 0.3s ease;
}

.footer-bottom a:hover {
    opacity: 1;
    color: var(--accent-blue);
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 新增样式：优化企业实力展示 */
.strength-desc {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 5px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 20px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.cert-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.cert-icon {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--accent-orange);
}

.cert-text {
    font-size: 1rem;
    font-weight: 500;
}

/* 成功案例展示样式 - World Star Aviation 风格 */
.success-cases {
    padding: 40px 0;
    /* 减小padding-top，消除导航栏和内容区块之间的空白 */
    background: var(--light-blue);
    position: relative;
}

.success-cases::before {
    display: none;
    /* Remove pattern */
}

/* 案例展示页面样式 */
.case-list {
    padding: 40px 0;
    /* 设置padding-top，消除导航栏和内容区块之间的空白 */
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
    position: relative;
    z-index: 2;
}

.case-item {
    background: var(--white);
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.4s ease;
    position: relative;
}

.case-item::before {
    display: none;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.case-image {
    height: 250px;
    /* Taller images */
    position: relative;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.case-item:hover .case-image img {
    transform: scale(1.1);
}

.case-content {
    padding: 30px;
}

.case-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 15px;
    line-height: 1.4;
    text-transform: uppercase;
}

.case-desc {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--gray-600);
    border-top: 1px solid var(--gray-200);
    padding-top: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cases-cta {
    text-align: center;
    margin-top: 60px;
    position: relative;
    z-index: 2;
}

.cta-btn {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 16px 40px;
    border-radius: 0;
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
    transition: all 0.3s ease;
    border: 2px solid var(--primary-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-btn:hover {
    background: var(--white);
    color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(33, 80, 121, 0.2);
}

/* 业务导航样式 */
.service-nav {
    background: var(--white);
    padding: 20px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 80px;
    z-index: 900;
}

.service-nav-list {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.service-nav-item {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
    background: var(--gray-100);
    border: 2px solid transparent;
}

.service-nav-item:hover {
    background: var(--accent-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74, 111, 220, 0.3);
}

.service-nav-item.active {
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    color: var(--white);
    box-shadow: 0 5px 15px rgba(74, 111, 220, 0.3);
}

/* 响应式设计优化 - 现代航空风格 */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

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

@media (max-width: 1024px) {
    .banner-title {
        font-size: 3rem;
    }

    .banner-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .strength-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .nav-list {
        gap: 12px;
    }

    .nav-link {
        font-size: 14px;
        padding: 8px 0;
    }

    .banner-title {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .banner-subtitle {
        font-size: 1.2rem;
        margin-bottom: 20px;
    }

    .banner-desc {
        font-size: 1rem;
        margin-bottom: 30px;
    }

    .banner-actions {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }

    .primary-btn,
    .secondary-btn {
        width: 200px;
        text-align: center;
    }

    .services-preview {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 20px;
    }

    .section-desc {
        font-size: 1.1rem;
        margin-bottom: 40px;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 40px;
    }

    .service-card {
        padding: 25px 20px;
    }

    .service-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .service-title {
        font-size: 1.2rem;
    }

    .company-strength {
        padding: 60px 0;
    }

    .strength-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        margin: 40px 0;
    }

    .strength-number {
        font-size: 3rem;
    }

    .cert-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .success-cases {
        padding: 60px 0;
    }

    .cases-grid {
        grid-template-columns: 1fr;
        gap: 25px;
        margin-top: 40px;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .banner-title {
        font-size: 2rem;
    }

    .banner-subtitle {
        font-size: 1.1rem;
    }

    .banner-desc {
        font-size: 0.95rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-desc {
        font-size: 1rem;
    }

    .service-card {
        padding: 20px 15px;
    }

    .service-icon {
        font-size: 2rem;
    }

    .service-title {
        font-size: 1.1rem;
    }

    .service-desc {
        font-size: 0.9rem;
    }

    .case-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .case-category {
        align-self: flex-start;
    }
}

/* 服务详情样式 */
.service-detail {
    padding: 40px 0;
    /* 减小padding-top，消除导航栏和内容区块之间的空白 */
    background: var(--white);
    position: relative;
}

.service-detail:nth-child(odd) {
    background: var(--gray-100);
}

.service-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.service-content.reverse {
    flex-direction: row-reverse;
}

.service-info {
    flex: 1;
}

.service-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 20px;
    line-height: 1.2;
}

.service-intro {
    font-size: 1.2rem;
    color: var(--gray-600);
    margin-bottom: 40px;
    line-height: 1.6;
}

.service-process h3,
.product-categories h3,
.consulting-scope h3,
.training-programs h3,
.service-advantages h3,
.quality-assurance h3,
.consulting-process h3,
.training-features h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
}

.service-process h3::before,
.product-categories h3::before,
.consulting-scope h3::before,
.training-programs h3::before,
.service-advantages h3::before,
.quality-assurance h3::before,
.consulting-process h3::before,
.training-features h3::before {
    content: '';
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--primary-blue));
    border-radius: 2px;
    margin-right: 15px;
}

.process-steps {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.process-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(74, 111, 220, 0.3);
}

.step-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.step-content p {
    color: var(--gray-600);
    line-height: 1.6;
}

.advantages-list,
.quality-list,
.process-list,
.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
}

.advantages-list li,
.quality-list li,
.process-list li,
.features-list li {
    color: var(--gray-600);
    line-height: 1.6;
    position: relative;
    padding-left: 25px;
}

.advantages-list li::before,
.quality-list li::before,
.process-list li::before,
.features-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-blue);
    font-weight: 700;
    font-size: 1.2rem;
}

.process-list li {
    padding-left: 0;
}

.process-list li::before {
    display: none;
}

.category-grid,
.scope-grid,
.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.category-item,
.scope-item,
.program-item {
    background: var(--white);
    padding: 30px 25px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.category-item:hover,
.scope-item:hover,
.program-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(74, 111, 220, 0.15);
    border-color: var(--accent-blue);
}

.category-item h4,
.scope-item h4,
.program-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.category-item p,
.scope-item p,
.program-item p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.95rem;
}

.service-image {
    flex: 1;
    height: 400px;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.service-image .image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    padding: 20px;
}

.training-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    color: var(--white);
    padding: 15px 35px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(74, 111, 220, 0.3);
}

.training-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(74, 111, 220, 0.4);
}

/* 新闻资讯样式 */
.news-list {
    padding: 40px 0;
    /* 减小padding-top，消除导航栏和内容区块之间的空白 */
    background: var(--white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.news-item {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.news-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(74, 111, 220, 0.15);
    border-color: var(--accent-blue);
}

.news-image {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.news-image .image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
}

.news-content {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-category {
    display: inline-block;
    background: var(--accent-blue);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 20px;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 15px;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.news-item:hover .news-title {
    color: var(--accent-blue);
}

.news-excerpt {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.95rem;
    margin-bottom: 25px;
    flex: 1;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--gray-500);
}

.news-date {
    font-style: italic;
}

.news-readmore {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.news-readmore:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        transition: left 0.3s ease;
        padding: 20px;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        display: block;
        padding: 15px 0;
        border-bottom: 1px solid var(--secondary-gray);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-actions {
        display: none;
    }

    .hero-banner {
        height: 400px;
        margin-top: 70px;
    }

    .slide-title {
        font-size: 2rem;
    }

    .slide-desc {
        font-size: 1rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .strength-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

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

    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .slide-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .strength-grid {
        grid-template-columns: 1fr;
    }

    .cert-grid {
        grid-template-columns: 1fr;
    }
}

/* 关于我们页面样式 */
/* 企业简介样式 */
.company-intro {
    padding: 40px 0;
    /* 减小padding-top，消除导航栏和内容区块之间的空白 */
    background: var(--white);
}

.intro-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.intro-text {
    flex: 1;
}

.intro-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 30px;
    line-height: 1.2;
}

.intro-text p {
    font-size: 1.1rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 20px;
}

.intro-stats {
    display: flex;
    flex-direction: column;
    gap: 30px;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    padding: 40px 35px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(74, 111, 220, 0.2);
}

.stat-item {
    text-align: center;
    color: var(--white);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 发展历程样式 */
.company-history {
    padding: 100px 0;
    background: var(--gray-100);
}

.company-history .section-title {
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-blue);
    font-size: 2.5rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--primary-blue));
    transform: translateX(-50%);
    border-radius: 2px;
}

.timeline-item {
    display: flex;
    margin-bottom: 50px;
    position: relative;
}

.timeline-year {
    position: absolute;
    left: 50%;
    top: 0;
    transform: translateX(-50%);
    background: var(--primary-blue);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(74, 111, 220, 0.3);
    z-index: 1;
}

.timeline-content {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    flex: 1;
    margin: 0 20px;
    position: relative;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(74, 111, 220, 0.15);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    left: -15px;
    width: 0;
    height: 0;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-right: 15px solid var(--white);
}

.timeline-item:nth-child(even) .timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    right: -15px;
    width: 0;
    height: 0;
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
    border-left: 15px solid var(--white);
}

.timeline-content h3 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-weight: 600;
}

.timeline-content p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 1rem;
}

/* 核心团队样式 */
.team-intro {
    padding: 100px 0;
    background: var(--white);
}

.team-intro .section-title {
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-blue);
    font-size: 2.5rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.team-member {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(74, 111, 220, 0.15);
    border-color: var(--accent-blue);
}

.member-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    margin: 0 auto 25px;
    box-shadow: 0 8px 25px rgba(74, 111, 220, 0.3);
    transition: all 0.3s ease;
}

.team-member:hover .member-avatar {
    transform: scale(1.1);
}

.team-member h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.member-position {
    font-size: 1.1rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-bottom: 15px;
}

.member-desc {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 资质证书样式 */
.certificates {
    padding: 100px 0;
    background: var(--gray-100);
}

.certificates .section-title {
    text-align: center;
    margin-bottom: 60px;
    color: var(--primary-blue);
    font-size: 2.5rem;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.cert-item {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.cert-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(74, 111, 220, 0.15);
    border-color: var(--accent-blue);
}

.cert-icon {
    font-size: 4rem;
    margin-bottom: 25px;
    display: block;
}

.cert-item h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.cert-item p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .intro-content {
        flex-direction: column;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-year {
        left: 30px;
        transform: translateX(-50%);
    }

    .timeline-item {
        flex-direction: column;
    }

    .timeline-item:nth-child(odd) .timeline-content,
    .timeline-item:nth-child(even) .timeline-content {
        margin-left: 60px;
        margin-right: 0;
    }

    .timeline-item:nth-child(odd) .timeline-content::before,
    .timeline-item:nth-child(even) .timeline-content::before {
        left: -15px;
        right: auto;
        border-right: 15px solid var(--white);
        border-left: none;
    }
}