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

:root {
    --brand-primary: #667eea;
    --brand-dark: #764ba2;
    --brand-deep: #5a67d8;
    --brand-light: #8b9cf7;
    --brand-accent: #ff6b35;
    --brand-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --brand-gradient-soft: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --brand-surface: #f5f7fa;
    --brand-shadow: rgba(102, 126, 234, 0.12);
}

/* 欢迎提示 */
.welcome-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.welcome-modal.show {
    opacity: 1;
    visibility: visible;
}

.welcome-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 50px 40px;
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    color: #fff;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8) translateY(-50px);
    transition: transform 0.4s ease;
}

.welcome-modal.show .welcome-content {
    transform: scale(1) translateY(0);
}

.welcome-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 32px;
    cursor: pointer;
    color: #fff;
    opacity: 0.8;
    transition: all 0.3s;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.welcome-close:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.welcome-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: welcomeBounce 1s ease infinite;
}

@keyframes welcomeBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.welcome-content h2 {
    font-size: 32px;
    margin-bottom: 15px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.welcome-content p {
    font-size: 18px;
    margin-bottom: 10px;
    opacity: 0.95;
    line-height: 1.6;
}

.welcome-subtitle {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 25px;
}

.welcome-features {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
    flex-wrap: wrap;
}

.welcome-feature {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 14px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.welcome-btn {
    background: #fff;
    color: #667eea;
    border: none;
    padding: 14px 40px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.welcome-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: #f5f5f5;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: var(--brand-surface);
}

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

/* 顶部导航 */
.top-nav {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #fff;
    padding: 10px 0;
    font-size: 14px;
}

.top-nav .container {
    display: flex;
    justify-content: flex-end;
    gap: 20px;
}

.top-nav a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s;
}

.top-nav a:hover {
    color: #ff6b35;
}

.top-nav a.active-lang {
    color: #ff6b35;
    font-weight: 600;
    border-bottom: 2px solid #ff6b35;
    padding-bottom: 2px;
}

/* 头部 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 0;
    border-bottom: none;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    position: relative;
}

.header::before {
    display: none;
}

.header-banner {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 18px 20px;
    flex-wrap: wrap;
}

.logo-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
    min-width: 120px;
    transition: opacity 0.3s;
}

.logo-block:hover {
    opacity: 0.9;
}

.logo-mark {
    display: block;
    width: 120px;
    height: auto;
    aspect-ratio: 1286 / 395;
}

.logo-sub {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    margin-top: 6px;
}

.logo-sub-en {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.2;
}

.logo-sub-cn {
    font-size: 13px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 1px;
    line-height: 1.2;
}

.company-title {
    flex: 1;
    min-width: 240px;
}

.company-name {
    font-size: 30px;
    font-weight: 700;
    color: #fff;
    line-height: 1.35;
    margin: 0 0 6px;
    letter-spacing: 1px;
}

.company-name-en {
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.88);
    margin: 0;
    line-height: 1.4;
    letter-spacing: 0.3px;
}

.contact-info {
    text-align: right;
    flex-shrink: 0;
    margin-left: auto;
}

.contact-info .phone {
    display: block;
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 4px;
    color: #fff;
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: color 0.3s;
}

.contact-info .phone:hover {
    color: #ff6b35;
}

.contact-info .label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
}

/* 主导航 */
.main-nav {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.06);
    border-bottom: 1px solid rgba(102, 126, 234, 0.12);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-nav .container ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
}

.main-nav li {
    flex: 1;
    min-width: 120px;
}

.main-nav a {
    display: block;
    padding: 18px 20px;
    text-decoration: none;
    color: #333;
    text-align: center;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
    font-weight: 500;
}

.main-nav a:hover,
.main-nav a.active {
    color: #667eea;
    border-bottom-color: #667eea;
    background: linear-gradient(to bottom, rgba(102, 126, 234, 0.08), transparent);
}

/* 关键词 */
.keywords {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 15px 0;
    text-align: center;
    font-size: 14px;
    color: #666;
    border-bottom: 1px solid rgba(102, 126, 234, 0.12);
}

.keywords strong {
    color: #667eea;
    margin: 0 10px;
    font-weight: 600;
}

/* 主内容区域 */
.main-content {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 30px;
}

.content-area {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.section {
    background-color: #fff;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    scroll-margin-top: 100px;
}

.section h2 {
    text-align: center;
    color: #667eea;
    font-size: 32px;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 15px;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

/* 服务轮播 */
.carousel-header {
    text-align: center;
    margin-bottom: 30px;
}

.carousel-header h2 {
    color: #667eea;
    font-size: 32px;
    margin-bottom: 10px;
}

.carousel-header p {
    color: #666;
    font-size: 18px;
}

.hero-banner {
    margin: 30px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.banner-image {
    height: 300px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
}

.banner-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 0;
}

.banner-overlay {
    text-align: center;
    color: #fff;
    z-index: 1;
    position: relative;
}

.banner-overlay h3 {
    font-size: 42px;
    margin-bottom: 15px;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
}

.banner-overlay p {
    font-size: 20px;
    opacity: 0.95;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 30px;
}

.service-item {
    text-align: center;
    padding: 0;
    border: 2px solid #e8e8e8;
    border-radius: 12px;
    transition: all 0.3s;
    cursor: pointer;
    background: #fff;
    overflow: hidden;
}

.service-item:hover {
    border-color: #667eea;
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.2);
}

.service-image {
    width: 100%;
    height: 180px;
    background-size: cover;
    background-position: center;
    margin-bottom: 15px;
}

.service-icon {
    font-size: 48px;
    margin-bottom: 15px;
    display: block;
    margin-top: 15px;
}

.service-item h4 {
    color: #667eea;
    font-size: 22px;
    margin-bottom: 12px;
    padding: 0 20px;
}

.service-item p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
    padding: 0 20px 20px;
}

/* 服务优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    border-radius: 12px;
    transition: all 0.3s;
}

.advantage-item:hover {
    transform: translateX(5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.advantage-icon {
    font-size: 48px;
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.advantage-content h3 {
    color: #667eea;
    margin-bottom: 12px;
    font-size: 22px;
}

.advantage-content p {
    color: #666;
    line-height: 1.8;
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 30px;
    align-items: start;
}

.about-image {
    position: sticky;
    top: 120px;
}

.about-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    transition: transform 0.3s;
}

.about-img:hover {
    transform: scale(1.05);
}

.about-text p {
    color: #666;
    line-height: 2;
    margin-bottom: 20px;
    text-align: justify;
    font-size: 16px;
}

.partners {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid #e8e8e8;
}

.partners h4 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 20px;
}

.partner-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.partner-logo {
    padding: 10px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8e8e8 100%);
    border-radius: 8px;
    font-weight: 600;
    color: #667eea;
    border: 2px solid #e8e8e8;
    transition: all 0.3s;
}

.partner-logo:hover {
    border-color: #667eea;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

/* 产品与服务 */
.services-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    background: #f5f7fa;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    color: #666;
    transition: all 0.3s;
    font-weight: 500;
}

.tab-btn:hover {
    border-color: #667eea;
    color: #667eea;
}

.tab-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-color: #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.service-detail-item {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 30px;
    align-items: center;
}

.detail-image {
    width: 100%;
    height: 250px;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    transition: transform 0.3s;
}

.detail-image:hover {
    transform: scale(1.05);
}

.detail-text h3 {
    color: #667eea;
    font-size: 26px;
    margin-bottom: 15px;
}

.detail-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 16px;
}

.detail-text ul {
    list-style: none;
}

.detail-text ul li {
    padding: 8px 0;
    color: #666;
    font-size: 16px;
}

/* 物流方案 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.solution-card {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    border-radius: 12px;
    transition: all 0.3s;
    border: 2px solid #e8e8e8;
}

.solution-card:hover {
    transform: translateY(-8px);
    border-color: #667eea;
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.2);
}

.solution-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.solution-card h3 {
    color: #667eea;
    font-size: 20px;
    margin-bottom: 12px;
}

.solution-card p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* 成功案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.case-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: all 0.3s;
    background: #fff;
}

.case-item .case-image {
    overflow: hidden;
}

.case-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.case-image {
    width: 100%;
    height: 200px;
    transition: transform 0.3s;
}

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

.case-item h4 {
    padding: 20px 20px 10px;
    color: #667eea;
    font-size: 20px;
}

.case-item p {
    padding: 0 20px 20px;
    color: #666;
    line-height: 1.6;
}

/* 客户见证 */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.testimonial-item {
    padding: 25px;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    border-radius: 12px;
    border: 2px solid #e8e8e8;
    transition: all 0.3s;
}

.testimonial-item:hover {
    border-color: #667eea;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
}

.testimonial-avatar {
    font-size: 48px;
    margin-bottom: 15px;
}

.testimonial-item h4 {
    color: #667eea;
    margin-bottom: 12px;
    font-size: 20px;
}

.testimonial-item p {
    color: #666;
    line-height: 1.8;
}

/* 新闻中心 */
.news-list {
    list-style: none;
}

.news-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid #e8e8e8;
    transition: all 0.3s;
}

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

.news-item:hover {
    background: #f5f7fa;
    padding-left: 10px;
    padding-right: 10px;
    border-radius: 8px;
}

.news-image {
    width: 100%;
    height: 100px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.news-item:hover .news-image {
    transform: scale(1.05);
}

.news-content a {
    text-decoration: none;
    color: inherit;
}

.news-content h4 {
    color: #333;
    margin-bottom: 8px;
    font-size: 18px;
    transition: color 0.3s;
}

.news-item:hover .news-content h4 {
    color: #667eea;
}

.news-content p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
}

/* 客户服务 */
.service-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.service-option {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    border-radius: 12px;
    border: 2px solid #e8e8e8;
    transition: all 0.3s;
}

.service-option:hover {
    border-color: #667eea;
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
}

.option-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.service-option h3 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 20px;
}

.service-option p {
    color: #666;
    margin-bottom: 15px;
    font-size: 14px;
}

.btn-link {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s;
    font-weight: 500;
}

.btn-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* 常见问题 */
.faq-list {
    list-style: none;
}

.faq-item {
    margin-bottom: 15px;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: #667eea;
}

.faq-question {
    background: #f5f7fa;
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: #333;
    transition: all 0.3s;
}

.faq-question:hover {
    background: #e8e8e8;
    color: #667eea;
}

.faq-icon {
    font-size: 20px;
    font-weight: bold;
    color: #667eea;
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 20px;
    color: #666;
    line-height: 1.8;
    display: none;
    background: #fff;
}

.faq-item.active .faq-answer {
    display: block;
    animation: slideDown 0.3s;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
    }
    to {
        opacity: 1;
        max-height: 500px;
    }
}

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.contact-info-box,
.contact-form-box {
    padding: 30px;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    border-radius: 12px;
    border: 2px solid #e8e8e8;
}

.contact-info-box h3,
.contact-form-box h3 {
    color: #667eea;
    margin-bottom: 20px;
    font-size: 24px;
}

.contact-item {
    padding: 12px 0;
    color: #666;
    font-size: 16px;
    border-bottom: 1px solid #e8e8e8;
}

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

.contact-item strong {
    color: #333;
    margin-right: 10px;
    white-space: nowrap;
    display: inline-block;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #667eea;
}

.contact-form button {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* 侧边栏 */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 25px;
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-box {
    background-color: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 2px solid #e8e8e8;
}

.sidebar-box h3 {
    color: #667eea;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e8e8e8;
    font-size: 20px;
}

.sidebar-box input,
.sidebar-box select {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    border: 2px solid #e8e8e8;
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.sidebar-box input:focus,
.sidebar-box select:focus {
    outline: none;
    border-color: #667eea;
}

.sidebar-box button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    margin-top: 5px;
}

.sidebar-box button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.login-hint {
    margin-top: 15px;
    font-size: 12px;
    color: #999;
    text-align: center;
}

.tracking-result,
.freight-result {
    margin-top: 15px;
    padding: 15px;
    background: #f5f7fa;
    border-radius: 8px;
    font-size: 14px;
    color: #666;
    display: none;
}

.tracking-result.show,
.freight-result.show {
    display: block;
}

.tracking-entry-card {
    margin-top: 8px;
    padding: 14px;
    border-radius: 10px;
    background: linear-gradient(135deg, #f6f8ff 0%, #ffffff 100%);
    border: 1px solid #e8ebf7;
}

.tracking-entry-btn {
    width: 100%;
    margin-top: 0;
    border: none;
    border-radius: 8px;
    padding: 10px 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    cursor: pointer;
    font-weight: 600;
}

.tracking-modal {
    position: fixed;
    inset: 0;
    background: rgba(20, 25, 40, 0.55);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 12px;
}

.tracking-modal.show {
    display: flex;
}

.tracking-modal-panel {
    width: min(1500px, 97vw);
    height: min(680px, 82vh);
    border-radius: 14px;
    background: #fff;
    overflow: hidden;
    box-shadow: 0 16px 46px rgba(0, 0, 0, 0.25);
    position: relative;
}

.tracking-modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 8px;
    background: #f5f7ff;
    color: #5562a9;
    font-size: 24px;
    line-height: 34px;
    cursor: pointer;
}

.tracking-modal-body {
    height: 100%;
    overflow: hidden;
    padding: 0;
    background: #fff;
}

.tracking-modal-frame {
    width: 100%;
    height: 100%;
    border: none;
    background: #fff;
}

/* 页脚 */
.footer {
    background: #555;
    color: #fff;
    padding: 36px 0 24px;
    margin-top: 50px;
}

.footer-main {
    padding-bottom: 28px;
}

.footer-info {
    max-width: 900px;
}

.footer-info-item {
    margin: 0 0 10px;
    font-size: 14px;
    line-height: 1.85;
    color: #fff;
}

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

.footer-info-item a {
    color: #fff;
    text-decoration: none;
}

.footer-info-item a:hover {
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.78);
    font-size: 13px;
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.78);
    text-decoration: none;
    margin-left: 6px;
}

.footer-bottom a:hover {
    color: #fff;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

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

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

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

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

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        position: static;
    }

    .service-detail-item {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
        padding: 16px;
    }

    .company-title {
        min-width: 0;
    }

    .company-name {
        font-size: 22px;
    }

    .company-name-en {
        font-size: 12px;
    }

    .contact-info {
        text-align: center;
        margin-left: 0;
    }

    .contact-info {
        text-align: center;
    }

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

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

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

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

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

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

    .main-nav ul {
        flex-direction: column;
    }

    .main-nav li {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .footer-info-item {
        font-size: 13px;
    }

    .section {
        padding: 25px 20px;
    }

    .section h2 {
        font-size: 24px;
    }
}