/* 学知盈瑞教育网站样式 */

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4caf50;
    --secondary-color: #42a5f5;
    --accent-color: #81c784;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fff;
    --bg-light: #f8f9fa;
    --border-color: #e0e0e0;
    --shadow: 0 2px 20px rgba(0,0,0,0.1);
    --gradient: linear-gradient(135deg, #4caf50 0%, #42a5f5 100%);
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
.header {
    background: #fff;
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    height: 50px;
    width: auto;
    max-width: 200px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown:hover .dropdown-menu {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: var(--shadow);
    border-radius: 10px;
    padding: 1rem 0;
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    min-width: 150px;
    z-index: 1001;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.3s ease;
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover,
.nav-link.active {
    background: var(--gradient);
    color: white;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: 0.3s;
}

/* 主横幅区域 */
.hero {
    margin-top: 80px;
    padding: 4rem 0;
    background: var(--gradient);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    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 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="0,100 1000,0 1000,100"/></svg>');
    background-size: cover;
}

.hero-background .container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: bold;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-form {
    background: rgba(255,255,255,0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100%;
}

.hero-form h3 {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-weight: bold;
}

.consultation-card {
    width: 100%;
    max-width: 350px;
}

.card-description {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
    font-size: 1rem;
}

.service-highlights {
    margin-bottom: 2rem;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
    text-align: left;
}

.highlight-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.highlight-item span {
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
}

.consultation-btn {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
}

/* 按钮样式 */
.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(76,175,80,0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 1px solid white;
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.1rem;
}

/* 服务优势区域 */
.advantages {
    padding: 4rem 0;
    background: var(--bg-light);
}

.advantages-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* 主卡片样式 - 四大学历提升方式 */
.main-advantage-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    border: 1px solid var(--primary-color);
    position: relative;
}

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

.main-advantage-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    background: var(--gradient);
    border-radius: 20px 20px 0 0;
    z-index: 1;
}

/* 子卡片网格 */
.sub-advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.advantage-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

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

.advantage-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.advantage-icon i {
    font-size: 2.5rem;
    color: white;
}

.main-advantage-card h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
    font-size: 2rem;
    font-weight: bold;
}

.main-advantage-card p {
    color: var(--text-light);
    font-size: 1.2rem;
    line-height: 1.6;
}

.advantage-item h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
    font-size: 1.3rem;
    font-weight: 600;
}

.advantage-item p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* 学历提升方式 */
.education-types {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.education-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.education-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0,0,0,0.15);
}

.education-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.education-icon.orange {
    background: var(--gradient);
}

.education-icon.blue {
    background: linear-gradient(135deg, #42a5f5 0%, #2196f3 100%);
}

.education-icon.red {
    background: linear-gradient(135deg, #4caf50 0%, #388e3c 100%);
}

.education-icon i {
    font-size: 1.5rem;
    color: white;
}

.education-item h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* 热门专业 */
.popular-majors {
    padding: 4rem 0;
    background: var(--bg-light);
}

.majors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.major-category {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.category-title {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.5rem;
}

.major-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.major-item {
    background: var(--bg-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-color);
}

/* 合作院校轮播 */
.partner-universities {
    padding: 4rem 0;
}

.universities-carousel {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: var(--shadow);
    width: 100%;
}

.carousel-wrapper {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    width: 500%;
    position: relative;
}

.university-slide {
    width: 20%;
    flex: 0 0 20%;
    position: relative;
    box-sizing: border-box;
}

.university-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(76, 175, 80, 0.1);
    min-height: 500px;
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.university-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(76, 175, 80, 0.1);
}

.university-header h3 {
    color: var(--text-color);
    font-size: 1.8rem;
    font-weight: bold;
    margin: 0;
}

.university-tag {
    background: var(--gradient);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.university-content {
    flex: 1;
    margin-bottom: 2rem;
}

.university-desc {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    text-align: center;
}

.majors-list h4 {
    color: var(--text-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.major-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.major-tag {
    background: rgba(76, 175, 80, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid rgba(76, 175, 80, 0.2);
    transition: all 0.3s ease;
}

.major-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

.university-features {
    background: rgba(66, 165, 245, 0.05);
    padding: 1.5rem;
    border-radius: 15px;
    border-left: 4px solid var(--secondary-color);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.feature-item:last-child {
    margin-bottom: 0;
}

.feature-item i {
    color: var(--secondary-color);
    font-size: 1.2rem;
    width: 20px;
    flex-shrink: 0;
}

.feature-item span {
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
}

.university-footer {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.university-footer .btn {
    min-width: 140px;
    transition: all 0.3s ease;
}

/* 轮播控制按钮 */
.carousel-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 10;
}

.carousel-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s ease;
    pointer-events: auto;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.carousel-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
}

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

.carousel-prev {
    margin-left: -25px;
}

.carousel-next {
    margin-right: -25px;
}

/* 轮播指示器 */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-top: 2rem;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: rgba(76, 175, 80, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: var(--primary-color);
    transform: scale(1.3);
}

.indicator:hover {
    background: var(--primary-color);
    transform: scale(1.2);
}

/* 响应式适配 */
@media (max-width: 768px) {
    .university-card {
        padding: 1.5rem;
        min-height: 400px;
    }

    .university-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .university-header h3 {
        font-size: 1.5rem;
    }

    .major-tags {
        justify-content: center;
    }

    .university-footer {
        flex-direction: column;
        gap: 0.8rem;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .carousel-prev {
        margin-left: -20px;
    }

    .carousel-next {
        margin-right: -20px;
    }

    .feature-item {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .universities-carousel {
        margin: 0 1rem;
    }

    .university-card {
        padding: 1rem;
        min-height: 350px;
    }

    .major-tags {
        gap: 0.5rem;
    }

    .major-tag {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

    .carousel-controls {
        display: none;
    }

    .university-footer .btn {
        min-width: 120px;
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
    }
}

/* 学历提升规划 */
.education-planning {
    padding: 4rem 0;
    background: var(--bg-light);
}

.planning-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.planning-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.planning-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.planning-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* 底部 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    height: 40px;
    width: auto;
    max-width: 180px;
    margin-bottom: 1rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--accent-color);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

.social-links a:hover {
    transform: scale(1.1);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* 左右侧边栏浮动导航 */
.left-sidebar,
.right-sidebar {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 150px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
    border-radius: 10px;
    z-index: 999;
    transition: all 0.3s ease;
}

.left-sidebar {
    left: 5px;
}

.right-sidebar {
    right: 5px;
}

.sidebar-header {
    background: var(--gradient);
    color: white;
    padding: 12px 15px;
    text-align: center;
    border-radius: 10px 10px 0 0;
    font-size: 14px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.sidebar-header i {
    font-size: 16px;
}

.right-sidebar .sidebar-header {
    flex-direction: column;
    gap: 2px;
    line-height: 1.2;
}

.sidebar-content {
    padding: 10px 0;
    max-height: 450px;
    overflow-y: auto;
}

.sidebar-item {
    display: block;
    padding: 8px 15px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 12px;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.2s ease;
}

.sidebar-item:hover {
    background: linear-gradient(90deg, var(--primary-color), transparent);
    color: white;
    padding-left: 20px;
}

.sidebar-item:last-child {
    border-bottom: none;
}

.sidebar-footer {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 0 0 10px 10px;
    text-align: center;
}

.sidebar-consult {
    display: block;
    background: var(--gradient);
    color: white;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.sidebar-consult:hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 10px rgba(76, 175, 80, 0.4);
}

/* 侧边栏滚动条样式 */
.sidebar-content::-webkit-scrollbar {
    width: 4px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
}

/* 悬浮咨询按钮 */
.floating-contact {
    position: fixed;
    right: 30px;
    bottom: 30px;
    z-index: 1000;
}

.contact-btn {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 30px;
    box-shadow: var(--shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(76,175,80,0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: 2rem 0;
        transition: left 0.3s ease;
        box-shadow: var(--shadow);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-background .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

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

    .sub-advantages-grid,
    .education-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .main-advantage-card {
        padding: 2rem 1.5rem;
    }

    .main-advantage-card h3 {
        font-size: 1.5rem;
    }

    .main-advantage-card p {
        font-size: 1rem;
    }

    .majors-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

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

    .planning-list {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .floating-contact {
        right: 20px;
        bottom: 20px;
    }

    .contact-btn {
        padding: 0.8rem 1rem;
    }

    .contact-btn span {
        display: none;
    }

    /* 移动端隐藏侧边栏 */
    .left-sidebar,
    .right-sidebar {
        display: none;
    }
}

@media (max-width: 1200px) {
    /* 在较小屏幕上调整侧边栏位置 */
    .left-sidebar,
    .right-sidebar {
        width: 120px;
    }

    .left-sidebar {
        left: 5px;
    }

    .right-sidebar {
        right: 5px;
    }
}

@media (max-width: 440px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .advantages,
    .education-types,
    .popular-majors,
    .partner-universities,
    .education-planning {
        padding: 2rem 0;
    }

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

    .sub-advantages-grid,
    .education-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .education-item {
        padding: 1rem;
    }

    .majors-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .major-category {
        padding: 1rem;
    }

    /* 小屏幕继续隐藏侧边栏 */
    .left-sidebar,
    .right-sidebar {
        display: none;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* 弹窗样式 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-overlay.show {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideInUp 0.3s ease;
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: #f0f0f0;
    color: var(--text-color);
}

.modal-body {
    padding: 1rem 2rem 2rem;
}

.modal-message {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.contact-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.contact-option {
    text-align: center;
    padding: 1.5rem 1rem;
    border: 1px solid #f0f0f0;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
}

.contact-option:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(76, 175, 80, 0.2);
}

.contact-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.8rem;
}

.contact-icon.wechat {
    background: linear-gradient(135deg, #00c851 0%, #007e33 100%);
}

.contact-icon.qq {
    background: linear-gradient(135deg, #00aced 0%, #0084b4 100%);
}

.contact-icon.email {
    background: linear-gradient(135deg, #ff6900 0%, #fcb045 100%);
}

.contact-option h4 {
    margin: 0 0 0.5rem;
    color: var(--text-color);
    font-size: 1.1rem;
}

.contact-option p {
    margin: 0 0 1rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

.contact-id {
    background: var(--bg-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-color);
    font-weight: 500;
    display: inline-block;
}

/* 二维码弹窗 */
.qrcode-body {
    text-align: center;
}

.qrcode-container {
    max-width: 300px;
    margin: 0 auto;
}

.qrcode-placeholder {
    background: var(--bg-light);
    border: 1px dashed var(--border-color);
    border-radius: 15px;
    padding: 3rem 2rem;
    text-align: center;
}

.qrcode-placeholder i {
    font-size: 4rem;
    color: #00c851;
    margin-bottom: 1rem;
}

.qrcode-placeholder p {
    margin: 0.5rem 0;
    color: var(--text-color);
    font-weight: 500;
}

.qr-tip {
    color: var(--text-light) !important;
    font-size: 0.9rem !important;
    font-weight: normal !important;
}

/* 弹窗动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 移动端优化 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .modal-header,
    .modal-body {
        padding: 1.5rem 1rem;
    }

    .contact-options {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .contact-option {
        padding: 1rem;
    }

    .contact-icon {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* 社交媒体联系方式样式 */
.social-contact {
    margin: 1.5rem 0;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.contact-item:hover {
    background-color: rgba(76, 175, 80, 0.1);
}

.contact-item i {
    font-size: 1.2rem;
    width: 24px;
    margin-right: 0.8rem;
    color: var(--primary-color);
}

.contact-item .fab.fa-weixin {
    color: #00c851;
}

.contact-item .fab.fa-tiktok {
    color: #000000;
}

.contact-item .fab.fa-qq {
    color: #00aced;
}

.contact-item span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 社交媒体二维码链接样式 */
.social-qr-codes {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.qr-link {
    display: flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.qr-link:hover {
    transform: translateY(-2px);
    text-decoration: none;
    color: white;
}

.qr-link i {
    font-size: 1rem;
    margin-right: 0.5rem;
}

/* 抖音主页链接样式 */
.douyin-link {
    margin-top: 1rem;
}

.douyin-link a {
    display: inline-flex;
    align-items: center;
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, #000000, #333333);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.douyin-link a:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    text-decoration: none;
    color: white;
}

.douyin-link a i {
    font-size: 1.1rem;
    margin-right: 0.5rem;
}

/* 时间线表样式 */
.timeline-section {
    padding: 4rem 0;
    background: var(--bg-light);
}

.timeline-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.timeline-item {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

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

.timeline-month {
    background: var(--gradient);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    display: inline-block;
    margin-bottom: 1rem;
}

.timeline-content h4 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.timeline-content p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 表单样式 */
.consultation-form {
    margin-top: 1rem;
}

.form-group {
    margin-bottom: 1rem;
    position: relative;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-group select {
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 4 5"><path fill="%23666" d="M2 0L0 2h4z"/></svg>');
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 12px;
}

.error-message {
    color: #f44336;
    font-size: 0.8rem;
    margin-top: 0.3rem;
    display: block;
    min-height: 1rem;
}

.form-group.error input,
.form-group.error select {
    border-color: #f44336;
}

/* 联系方式弹窗样式增强 */
.contact-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    max-width: 600px;
}

.contact-option {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: 15px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.contact-option:hover {
    transform: translateY(-3px);
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.contact-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: white;
}

.contact-icon.wechat {
    background: linear-gradient(135deg, #07c160, #1aad19);
}

.contact-icon.qq {
    background: linear-gradient(135deg, #1296db, #0066cc);
}

.contact-icon.douyin {
    background: linear-gradient(135deg, #000000, #333333);
}

.contact-icon.phone {
    background: linear-gradient(135deg, #42a5f5, #1976d2);
}

.contact-icon.email {
    background: linear-gradient(135deg, #ff9800, #f57c00);
}

.contact-option h4 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.contact-option p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.contact-id {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* 二维码图片样式 */
.qrcode-image {
    text-align: center;
}

.qrcode-image img {
    max-width: 200px;
    max-height: 200px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
}

.qrcode-image p {
    margin: 0.5rem 0;
    font-weight: 500;
}

.qrcode-placeholder {
    text-align: center;
    padding: 2rem;
}

.qrcode-placeholder i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* 成功提示样式 */
.success-message {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 25px;
    z-index: 10000;
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: fadeInOut 3s ease-in-out;
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.8);
    }
    10%, 90% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .social-qr-codes {
        justify-content: center;
    }

    .qr-link {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }

    .douyin-link {
        text-align: center;
    }

    .contact-item {
        font-size: 0.85rem;
    }

    .timeline-container {
        grid-template-columns: 1fr;
    }

    .contact-options {
        grid-template-columns: 1fr;
    }

    .nav-buttons {
        display: none;
    }

    .nav-menu {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: var(--shadow);
        display: none;
        padding: 1rem 0;
    }

    .nav-toggle {
        display: flex;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        background: var(--bg-light);
        margin-left: 1rem;
        border-radius: 5px;
    }
}

/* 新的联系方式布局样式 */
.contact-section {
    max-width: 100%;
}

.contact-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.contact-info {
    flex: 1;
}

.contact-text p {
    margin: 0.5rem 0;
    display: flex;
    align-items: center;
    font-size: 14px;
    color: var(--text-color);
    padding: 0.3rem 0;
}

.contact-text i {
    margin-right: 0.5rem;
    width: 20px;
    font-size: 16px;
}

.contact-text .fab.fa-weixin {
    color: #07c160;
}

.contact-text .fab.fa-tiktok {
    color: #000;
}

.contact-text .fab.fa-qq {
    color: #12b7f5;
}

.contact-text .fas.fa-mobile-alt {
    color: var(--primary-color);
}

.qr-codes-display {
    display: flex;
    gap: 1rem;
    flex: 1;
    justify-content: center;
}

.qr-code-item {
    text-align: center;
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.qr-code-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.qr-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 0.5rem;
}

.qr-code-item p {
    font-size: 12px;
    color: var(--text-light);
    margin: 0;
}

.douyin-homepage {
    margin-top: 1.5rem;
    text-align: center;
    padding: 1rem;
    background: linear-gradient(135deg, #000 0%, #333 100%);
    border-radius: 10px;
}

.douyin-main-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.douyin-main-link:hover {
    color: #00d4ff;
    transform: scale(1.05);
}

.douyin-main-link i {
    font-size: 18px;
}

/* 响应式样式 */
@media (max-width: 768px) {
    .contact-row {
        flex-direction: column;
        gap: 1rem;
    }

    .qr-codes-display {
        justify-content: space-around;
    }

    .qr-code-item {
        padding: 0.8rem;
    }

    .qr-image {
        width: 60px;
        height: 60px;
    }

    .contact-text p {
        font-size: 13px;
    }
}

/* 快速咨询区域样式 */
.quick-consultation {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8fffe 0%, #e8f5e8 100%);
}

.quick-consultation .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.quick-consultation .section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

/* 联系方式一行布局 */
.contact-row-layout {
    display: flex;
    gap: 1.5rem;
    justify-content: space-between;
    margin-bottom: 3rem;
}

.contact-item-card {
    flex: 1;
    background: white;
    border-radius: 20px;
    padding: 2rem 1.5rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.contact-item-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.contact-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
}

.method-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: white;
    margin-bottom: 1rem;
}

.method-icon.wechat {
    background: #07c160;
}

.method-icon.douyin {
    background: #000;
}

.method-icon.qq {
    background: #12b7f5;
}

.method-icon.phone {
    background: var(--primary-color);
}

.method-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.method-info p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin: 0;
    font-weight: 600;
}

.qr-section {
    text-align: center;
}

.qr-code {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 0.75rem;
    border: 3px solid #f0f0f0;
}

.qr-section p {
    font-size: 0.95rem;
    color: var(--text-light);
    margin: 0;
    font-weight: 500;
}

/* 抖音主页链接 */
.douyin-homepage-section {
    text-align: center;
    padding: 3rem 2rem;
    /*background: linear-gradient(135deg, #ff0050 0%, #ff4081 25%, #e91e63 50%, #ad1457 75%, #880e4f 100%);*/
    /*border-radius: 20px;*/
    /*box-shadow: 0 8px 32px rgba(255, 0, 80, 0.3);*/
    position: relative;
    overflow: hidden;
}

.douyin-homepage-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    /*background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);*/
    animation: rotate 20s linear infinite;
}

.douyin-homepage-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    color: #000;
    text-decoration: none;
    font-size: 1.3rem;
    font-weight: 700;
    padding: 1.2rem 3rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(0, 0, 0, 0.2);
    border-radius: 50px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
    text-shadow: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.douyin-homepage-link:hover {
    color: #000;
    transform: scale(1.08) translateY(-3px);
    background: rgba(255, 255, 255, 1);
    border-color: rgba(0, 0, 0, 0.4);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

.douyin-homepage-link i {
    font-size: 1.8rem;
    animation: pulse 2s infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .contact-row-layout {
        gap: 1rem;
    }

    .contact-item-card {
        padding: 1.5rem 1rem;
    }

    .qr-code {
        width: 120px;
        height: 120px;
    }

    .method-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .quick-consultation {
        padding: 3rem 0;
    }

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

    .contact-row-layout {
        flex-direction: column;
        gap: 1.5rem;
    }

    .contact-item-card {
        padding: 1.5rem;
    }

    .qr-code {
        width: 130px;
        height: 130px;
    }

    .method-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }

    .douyin-homepage-section {
        padding: 2rem 1.5rem;
    }

    .douyin-homepage-link {
        font-size: 1.1rem;
        padding: 1rem 2rem;
        gap: 0.8rem;
    }

    .douyin-homepage-link i {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .contact-item-card {
        padding: 1.2rem;
    }

    .qr-code {
        width: 110px;
        height: 110px;
    }

    .method-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .method-info h3 {
        font-size: 1rem;
    }

    .method-info p {
        font-size: 1rem;
    }

    .douyin-homepage-section {
        padding: 1.5rem 1rem;
        margin: 0 0.5rem;
    }

    .douyin-homepage-link {
        font-size: 1rem;
        padding: 0.9rem 1.5rem;
        gap: 0.6rem;
    }

    .douyin-homepage-link i {
        font-size: 1.3rem;
    }
}

/* 关于我们区域样式 */
.about-us {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8fffe 0%, #e8f5e8 100%);
}

.about-us .section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 3rem;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.company-intro {
    background: white;
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    line-height: 1.8;
}

.company-name {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--primary-color);
}

.intro-section {
    margin-bottom: 2.5rem;
}

.intro-section h4 {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 1rem;
    padding-left: 1rem;
    border-left: 4px solid var(--primary-color);
}

.intro-section h5 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 0.8rem;
    margin-top: 1.5rem;
}

.intro-section p {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    text-align: justify;
    text-indent: 2em;
}

.business-block {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f9f9f9 0%, #f0f8ff 100%);
    border-radius: 15px;
    border-left: 4px solid var(--secondary-color);
}

.business-block p {
    margin-bottom: 1rem;
    text-indent: 2em;
}

.education-list,
.certification-list,
.advantages-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.education-list li,
.certification-list li,
.advantages-list li {
    margin-bottom: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border-left: 4px solid var(--accent-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.education-list li:hover,
.certification-list li:hover,
.advantages-list li:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.education-list li strong,
.certification-list li strong,
.advantages-list li strong {
    color: var(--primary-color);
    font-weight: 600;
}

.welcome-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: center;
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e8f5e8 100%);
    border-radius: 15px;
    border: 2px solid var(--primary-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-us {
        padding: 3rem 0;
    }

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

    .company-intro {
        padding: 2rem 1.5rem;
        margin: 0 1rem;
    }

    .company-name {
        font-size: 1.5rem;
    }

    .intro-section h4 {
        font-size: 1.3rem;
    }

    .intro-section h5 {
        font-size: 1.1rem;
    }

    .intro-section p {
        text-indent: 1.5em;
    }

    .business-block {
        padding: 1rem;
        margin: 0 0.5rem 1.5rem 0.5rem;
    }

    .education-list li,
    .certification-list li,
    .advantages-list li {
        padding: 0.8rem;
        margin-bottom: 0.8rem;
    }
}

@media (max-width: 480px) {
    .company-intro {
        padding: 1.5rem 1rem;
    }

    .company-name {
        font-size: 1.3rem;
        margin-bottom: 2rem;
    }

    .intro-section h4 {
        font-size: 1.2rem;
    }

    .intro-section p {
        font-size: 0.95rem;
        text-indent: 1em;
    }

    .business-block {
        padding: 0.8rem;
    }

    .welcome-text {
        font-size: 1rem;
        padding: 1rem;
    }
}