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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8fafc;
}

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

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.nav-logo {
    display: flex;
    align-items: center;
}
.nav-logo-img {
    width: 60px;
    height: 50px;
    margin-right: 10px;
}
.nav-logo h2 {
    color: #2563eb;
    font-weight: 700;
    font-size: 24px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: #64748b;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #2563eb;
    transition: width 0.3s ease;
}

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

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

.language-selector {
    position: relative;
}

.lang-btn {
    background: none;
    border: 1px solid #e2e8f0;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    color: #64748b;
    font-size: 14px;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    border-color: #2563eb;
    color: #2563eb;
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    display: none;
    min-width: 120px;
    z-index: 1001;
}

.language-selector:hover .lang-dropdown {
    display: block;
}

.lang-option {
    display: block;
    width: 100%;
    padding: 10px 16px;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background 0.3s ease;
    font-size: 14px;
}

.lang-option:hover {
    background: #f1f5f9;
}

.login-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s ease;
    text-decoration: none;
}

.login-btn:hover {
    background: #1d4ed8;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: #64748b;
    transition: 0.3s;
}

/* 主页英雄区域 */
.hero-section {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 50%, #60a5fa 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-section::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    opacity: 0.3;
}

.hero-container {
    text-align: center;
    position: relative;
    z-index: 1;
    min-width: 80%;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 3rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tracking-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    margin-bottom: 2rem;
    width: 100%;
    position: relative;
}
.tracking-img {
    width: 100px;
    height: 60px;
    position: absolute;
    right: 10px;
    top: 2px;
}
@media screen and (max-width: 768px) {
    .tracking-img {
        width: 80px;
        height: 50px;
        position: relative;
    }
}
.tracking-input-section {
    margin-bottom: 30px;
}

.input-label {
    text-align: left;
    color: #64748b;
    font-size: 14px;
    margin-bottom: 15px;
    font-weight: 500;
}

.tracking-input {
    width: 100%;
    min-height: 120px;
    padding: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    resize: vertical;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.tracking-input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.tracking-options {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    justify-content: center;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.option-group input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: #2563eb;
}

.option-group label {
    color: #64748b;
    font-weight: 500;
    cursor: pointer;
}

.track-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 16px 40px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 auto;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}

.track-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.track-icon {
    font-size: 20px;
}

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

.demo-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    display: inline-block;
    backdrop-filter: blur(10px);
}

/* 产品区域 */
.products-section {
    padding: 100px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 4rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.product-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 16px;
    background: #f8fafc;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    background: white;
}

.product-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
}

.product-card p {
    color: #64748b;
    line-height: 1.6;
}

/* 关于我们区域 */
.about-section {
    padding: 100px 0;
    background: #f8fafc;
}

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

.company-intro {
    text-align: center;
    margin-bottom: 4rem;
}

.company-name {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1rem;
}

.company-slogan {
    font-size: 1.3rem;
    color: #2563eb;
    font-weight: 600;
    margin-bottom: 2rem;
    font-style: italic;
}

.company-description p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    text-align: left;
    max-width: 900px;
    margin: 0 auto;
}

.core-advantages {
    margin-bottom: 4rem;
}

.core-advantages h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #1e293b;
    text-align: center;
    margin-bottom: 3rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 3rem;
}

.advantage-item {
    background: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-align: center;
}

.advantage-item h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
    text-align: center;
}

.advantage-item p {
    color: #64748b;
    line-height: 1.6;
    font-size: 0.95rem;
    text-align: left;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin-bottom: 3rem;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: #2563eb;
    margin-bottom: 8px;
}

.stat-label {
    color: #64748b;
    font-weight: 500;
    font-size: 0.9rem;
}

.company-mission {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    border-radius: 16px;
    margin-top: 2rem;
}

.mission-text {
    color: white;
    font-size: 1.2rem;
    line-height: 1.8;
    font-weight: 500;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .company-name {
        font-size: 1.6rem;
    }
    
    .company-slogan {
        font-size: 1.1rem;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .advantage-item {
        padding: 25px 20px;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .company-mission {
        padding: 30px 20px;
    }
    
    .mission-text {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .stats {
        grid-template-columns: 1fr;
    }
    
    .company-name {
        font-size: 1.4rem;
    }
    
    .company-slogan {
        font-size: 1rem;
    }
}

/* 联系我们区域 */
.contact-section {
    padding: 100px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    background: #eff6ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item h4 {
    color: #1e293b;
    font-weight: 600;
    margin-bottom: 5px;
}

.contact-item p {
    color: #64748b;
}

.contact-form {
    background: #f8fafc;
    padding: 40px;
    border-radius: 16px;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 20px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.contact-form textarea {
    min-height: 120px;
    resize: vertical;
}

.contact-form button {
    background: #2563eb;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s ease;
    width: 100%;
}

.contact-form button:hover {
    background: #1d4ed8;
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    text-align: center;
    padding: 30px 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    /* 导航栏移动端优化 */
    .nav-container {
        padding: 0 15px;
        height: 60px;
    }
    
    .nav-logo h2 {
        font-size: 20px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
        gap: 20px;
    }

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

    .hamburger {
        display: flex;
    }

    .nav-right {
        gap: 10px;
    }

    .login-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
    
    .lang-btn {
        padding: 6px 12px;
        font-size: 12px;
    }

    /* 英雄区域移动端优化 */
    .hero-section {
        min-height: 100vh;
        padding: 80px 0 40px;
    }
    
    .hero-container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2.2rem;
        margin-bottom: 2rem;
        line-height: 1.2;
    }

    .tracking-card {
        padding: 25px 20px;
        border-radius: 16px;
        margin: 0 10px;
    }

    .tracking-options {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .option-item {
        text-align: center;
        padding: 15px;
    }
    
    .track-btn {
        width: 100%;
        padding: 16px;
        font-size: 16px;
        margin-top: 20px;
    }

    /* 产品区域移动端优化 */
    .products-section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
        padding: 0 15px;
    }
    
    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 2.5rem;
        padding: 0 15px;
    }

    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }
    
    .product-card {
        padding: 25px 20px;
    }
    
    .product-card h3 {
        font-size: 1.3rem;
    }
    
    .product-card p {
        font-size: 0.9rem;
    }

    /* 关于我们区域移动端优化 */
    .about-section {
        padding: 60px 0;
    }
    
    .company-intro {
        padding: 30px 20px;
        text-align: center;
    }
    
    .company-name {
        font-size: 1.6rem;
        margin-bottom: 1rem;
    }
    
    .company-slogan {
        font-size: 1.1rem;
        margin-bottom: 1.5rem;
    }
    
    .company-description {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }
    
    .advantage-item {
        padding: 25px 20px;
        text-align: center;
    }
    
    .advantage-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }
    
    .advantage-item h4 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    .advantage-item p {
        font-size: 0.9rem;
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .company-mission {
        padding: 30px 20px;
        text-align: center;
    }
    
    .mission-text {
        font-size: 1.1rem;
        line-height: 1.6;
    }

    /* 合作流程移动端优化 */
    .cooperation-process {
        padding: 25px 15px;
        margin-top: 3rem;
    }
    
    .cooperation-process h3 {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .process-subtitle {
        font-size: 1rem;
        text-align: center;
        margin-bottom: 2.5rem;
    }
    
    .process-timeline::before {
        left: 25px;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.1rem;
        margin-right: 1.5rem;
    }
    
    .step-content {
        padding: 20px;
        margin-top: 5px;
    }
    
    .step-content::before {
        left: -10px;
        border-right-width: 10px;
    }
    
    .step-title {
        font-size: 1.1rem;
    }
    
    .step-description {
        font-size: 0.9rem;
    }

    /* 联系我们移动端优化 */
    .contact-section {
        padding: 60px 0;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 0 15px;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .contact-icon {
        font-size: 1.5rem;
        width: 50px;
        height: 50px;
    }
    
    .contact-item h4 {
        font-size: 1.1rem;
    }
    
    .contact-item p {
        font-size: 0.9rem;
    }

    /* 模态框移动端优化 */
    .modal-content {
        width: 95%;
        max-width: none;
        margin: 20px auto;
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .modal-header h3 {
        font-size: 1.3rem;
    }
    
    .tracking-summary {
        padding: 15px 20px;
    }
    
    .tracking-details {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 20px;
    }
    
    .package-status {
        padding: 15px;
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .status-text {
        font-size: 1.1rem;
    }
    
    .timeline-item {
        padding-left: 50px;
        margin-bottom: 20px;
    }
    
    .timeline-dot {
        width: 20px;
        height: 20px;
        left: 6px;
    }
    
    .timeline::before {
        left: 15px;
    }
    
    .sidebar {
        order: -1;
    }
}

@media (max-width: 480px) {
    /* 超小屏幕优化 */
    .container {
        padding: 0 10px;
    }
    
    .nav-container {
        padding: 0 10px;
        height: 55px;
    }
    
    .nav-logo h2 {
        font-size: 18px;
    }
    
    .nav-menu {
        top: 55px;
    }

    .hero-title {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
    }

    .tracking-card {
        padding: 20px 15px;
        margin: 0 5px;
    }
    
    .tracking-input {
        min-height: 100px;
        padding: 15px;
        font-size: 14px;
    }
    
    .track-btn {
        padding: 14px;
        font-size: 15px;
    }

    .section-title {
        font-size: 1.7rem;
        padding: 0 10px;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
        padding: 0 10px;
    }
    
    .products-grid {
        padding: 0 10px;
        gap: 15px;
    }
    
    .product-card {
        padding: 20px 15px;
    }
    
    .product-card h3 {
        font-size: 1.2rem;
    }
    
    .product-card p {
        font-size: 0.85rem;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 25px 15px;
    }
    
    .stat-number {
        font-size: 1.6rem;
    }
    
    .company-name {
        font-size: 1.4rem;
    }
    
    .company-slogan {
        font-size: 1rem;
    }
    
    .company-description {
        font-size: 0.9rem;
    }
    
    .advantage-item {
        padding: 20px 15px;
    }
    
    .advantage-icon {
        font-size: 2rem;
    }
    
    .advantage-item h4 {
        font-size: 1rem;
    }
    
    .advantage-item p {
        font-size: 0.85rem;
    }

    /* 合作流程超小屏优化 */
    .cooperation-process {
        padding: 20px 10px;
    }
    
    .cooperation-process h3 {
        font-size: 1.5rem;
    }
    
    .process-subtitle {
        font-size: 0.9rem;
        margin-bottom: 2rem;
    }
    
    .process-timeline::before {
        left: 20px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        margin-right: 1rem;
    }
    
    .step-content {
        padding: 15px;
    }
    
    .step-content::before {
        left: -8px;
        border-right-width: 8px;
        border-top-width: 8px;
        border-bottom-width: 8px;
    }
    
    .step-title {
        font-size: 1rem;
    }
    
    .step-description {
        font-size: 0.85rem;
    }

    .contact-content {
        padding: 0 10px;
        gap: 30px;
    }
    
    .contact-form {
        padding: 25px 15px;
    }
    
    .contact-form input,
    .contact-form textarea {
        padding: 12px;
        font-size: 14px;
    }
    
    .contact-form button {
        padding: 12px 20px;
        font-size: 15px;
    }
    
    .modal-content {
        width: 98%;
        margin: 10px auto;
    }
    
    .modal-header {
        padding: 12px 15px;
    }
    
    .modal-header h3 {
        font-size: 1.2rem;
    }
    
    .tracking-summary {
        padding: 12px 15px;
    }
    
    .tracking-details {
        padding: 15px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 横屏手机优化 */
@media (max-width: 896px) and (orientation: landscape) {
    .hero-section {
        min-height: 100vh;
        padding: 70px 0 30px;
    }
    
    .hero-title {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }
    
    .tracking-card {
        padding: 20px;
    }
    
    .modal-content {
        max-height: 85vh;
    }
}

/* 包裹分隔符样式 */
.package-separator {
    display: flex;
    align-items: center;
    margin: 20px 0;
    gap: 10px;
}

.separator-line {
    flex: 1;
    height: 1px;
    background: #e5e7eb;
}

.separator-text {
    color: #6b7280;
    font-size: 12px;
    white-space: nowrap;
    padding: 0 10px;
}
.timeline-content {
    padding: 10px 20px;
}
/* 包裹标题样式 */
.package-header {
    background: #f8fafc;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 15px;
    border-left: 4px solid #2563eb;
}

.package-header h5 {
    margin: 0 0 8px 0;
    color: #1f2937;
    font-weight: 600;
}

.package-header p {
    margin: 4px 0;
    color: #6b7280;
    font-size: 14px;
}

/* 错误状态的包裹标题样式 */
.package-header.error {
    background: #fef2f2;
    border-left-color: #ef4444;
}

.package-header .error-message {
    color: #dc2626;
    font-weight: 500;
}

/* 最新轨迹项样式 */
.timeline-item.latest {
    background: #f0f9ff;
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
}

.timeline-item.latest .timeline-dot {
    background: #2563eb;
    color: white;
}

.timeline-item.error {
    background: #fef2f2;
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
}

.timeline-item.error .timeline-dot {
    background: #ef4444;
    color: white;
}

.timeline-item.error .status {
    color: #dc2626;
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .nav-link:hover::after {
        width: 0;
    }
    
    .nav-link:active::after {
        width: 100%;
    }
    
    .product-card:hover {
        transform: none;
    }
    
    .product-card:active {
        transform: translateY(-5px);
    }
    
    .step-content:hover {
        transform: none;
    }
    
    .step-content:active {
        transform: translateY(-3px);
    }
    
    /* 增大触摸目标 */
    .nav-link {
        padding: 10px 5px;
    }
    
    .lang-btn {
        min-height: 44px;
    }
    
    .login-btn {
        min-height: 44px;
    }
    
    .track-btn {
        min-height: 48px;
    }
    
    .contact-form button {
        min-height: 48px;
    }
    
    .close-btn {
        min-width: 44px;
        min-height: 44px;
    }
}

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

.tracking-card {
    animation: fadeInUp 0.8s ease-out;
}

.product-card {
    animation: fadeInUp 0.8s ease-out;
}

/* 物流追踪结果模态框 */
.tracking-results-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: white;
    border-radius: 16px;
    width: 95%;
    max-width: 1200px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #e2e8f0;
    background: #f8fafc;
    border-radius: 16px 16px 0 0;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #64748b;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background: #e2e8f0;
    color: #1e293b;
}

.tracking-summary {
    padding: 20px 30px;
    border-bottom: 1px solid #e2e8f0;
}

.tracking-number {
    margin-bottom: 20px;
}

.tracking-number .label {
    color: #64748b;
    font-weight: 500;
}

.tracking-number .number {
    color: #1e293b;
    font-weight: 600;
    font-size: 1.1rem;
}

.status-tabs {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.tab {
    padding: 8px 16px;
    border-radius: 20px;
    background: #f1f5f9;
    color: #64748b;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.tab.active {
    background: #2563eb;
    color: white;
}

.tab.success {
    background: #10b981;
    color: white;
}

.tab:hover:not(.active):not(.success) {
    background: #e2e8f0;
    border-color: #cbd5e1;
}

.tracking-details {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    padding: 30px;
}

.package-info {
    min-height: 400px;
}

.package-status {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 12px;
    margin-bottom: 30px;
}

.package-status.delivered .status-icon {
    width: 50px;
    height: 50px;
    background: #10b981;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
}

/* 无轨迹状态样式 */
.package-status.no-track {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
}

.package-status.no-track .status-text {
    color: #6b7280;
}

/* 已妥投状态样式 */
.package-status.delivered {
    background: #f0fdf4;
    border: 1px solid #22c55e;
}

.package-status.delivered .status-text {
    color: #16a34a;
}

.status-info {
    flex: 1;
}

.status-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: #065f46;
    margin-bottom: 5px;
}

.carrier {
    color: #059669;
    font-weight: 500;
}

.delivery-time {
    text-align: right;
}

.delivery-time .date {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 5px;
}

.delivery-time .location {
    color: #64748b;
    font-size: 14px;
}

.tracking-timeline h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
}

.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e2e8f0;
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 25px;
}

.timeline-dot {
    position: absolute;
    left: 8px;
    top: 5px;
    width: 24px;
    height: 24px;
    background: #f1f5f9;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    z-index: 1;
}

.timeline-item.delivered .timeline-dot {
    background: #10b981;
    border-color: #10b981;
    color: white;
}

.timeline-content .time {
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 5px;
}

.timeline-content .status {
    color: #374151;
    margin-bottom: 3px;
}

.timeline-content .location {
    color: #64748b;
    font-size: 14px;
}

.tracking-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 8px 16px;
    border: 1px solid #e2e8f0;
    background: white;
    color: #64748b;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.action-btn:hover {
    border-color: #2563eb;
    color: #2563eb;
}

.sidebar {
    background: #f8fafc;
    border-radius: 12px;
    padding: 20px;
    height: fit-content;
}

.recent-tracking h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 15px;
}

.recent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: white;
    border-radius: 8px;
    margin-bottom: 10px;
    border: 1px solid #e2e8f0;
}

.recent-item.active {
    border-color: #2563eb;
    background: #eff6ff;
}

.recent-number {
    font-size: 14px;
    color: #1e293b;
    font-weight: 500;
}

.remove-btn {
    background: none;
    border: none;
    color: #64748b;
    cursor: pointer;
    font-size: 16px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.remove-btn:hover {
    background: #fee2e2;
    color: #dc2626;
}

.carrier-info {
    margin-top: 30px;
    text-align: center;
}

.carrier-logo {
    background: #2563eb;
    color: white;
    padding: 15px;
    border-radius: 8px;
    font-weight: 600;
    margin-bottom: 15px;
}

.track-again-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    width: 100%;
}

.track-again-btn:hover {
    background: #1d4ed8;
}

/* 产品部分样式 - 重新设计 */
.product-category {
    margin-bottom: 3rem;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.product-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.category-title {
    font-size: 1.8rem;
    color: #1e293b;
    margin-bottom: 1rem;
    font-weight: 700;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    border-radius: 2px;
}

.category-description {
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.compliance-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 2rem;
}

.feature-item {
    background: #f8fafc;
    padding: 30px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(37, 99, 235, 0.15);
    background: white;
}

.feature-title {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 1rem;
    font-weight: 600;
    text-align: center;
}

.feature-description {
    color: #64748b;
    line-height: 1.6;
    font-size: 0.95rem;
    text-align: left;
}

/* 为产品体系部分添加特殊样式 */
.product-category:first-child {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 2px solid #2563eb;
}

.product-category:first-child .category-title {
    color: #2563eb;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 98%;
        margin: 10px;
    }
    
    .tracking-details {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 20px;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .tracking-summary {
        padding: 15px 20px;
    }
    
    .status-tabs {
        gap: 5px;
    }
    
    .tab {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .package-status {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .delivery-time {
        text-align: center;
    }
    
    .tracking-actions {
        justify-content: center;
    }
    
    .action-btn {
        flex: 1;
        min-width: 120px;
    }
    
    .product-category {
        padding: 25px;
        margin-bottom: 2rem;
    }
    
    .category-title {
        font-size: 1.5rem;
    }
    
    .category-description {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .compliance-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-item {
        padding: 20px;
    }
    
    .feature-title {
        font-size: 1.1rem;
    }
    
    .feature-description {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .product-category {
        padding: 20px;
        margin-bottom: 1.5rem;
    }
    
    .category-title {
        font-size: 1.3rem;
    }
    
    .category-title::after {
        width: 40px;
        height: 2px;
    }
}

/* 合作流程样式 - 修正版 */
.cooperation-process {
    margin-top: 4rem;
    padding: 40px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.cooperation-process h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #1e293b;
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 1rem;
}

.cooperation-process h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    border-radius: 2px;
}

.process-subtitle {
    text-align: center;
    color: #64748b;
    font-size: 1.1rem;
    margin-bottom: 3rem;
    line-height: 1.6;
}

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

.process-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    z-index: 1;
}

.timeline-step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 3rem;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    z-index: 2;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    flex-shrink: 0;
    margin-right: 2rem;
}

.step-content {
    flex: 1;
    background: #f8fafc;
    padding: 25px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
    margin-top: 10px;
}

.step-content:hover {
    background: white;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.step-content::before {
    content: '';
    position: absolute;
    left: -12px;
    top: 20px;
    width: 0;
    height: 0;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    border-right: 12px solid #f8fafc;
    transition: border-right-color 0.3s ease;
}

.step-content:hover::before {
    border-right-color: white;
}

.step-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.step-description {
    color: #64748b;
    line-height: 1.6;
    font-size: 0.95rem;
}

.step-icon {
    font-size: 1.5rem;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .cooperation-process {
        padding: 25px;
        margin-top: 3rem;
    }
    
    .process-timeline::before {
        left: 25px;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.1rem;
        margin-right: 1.5rem;
    }
    
    .step-content {
        padding: 20px;
        margin-top: 5px;
    }
    
    .step-content::before {
        left: -10px;
        border-right-width: 10px;
    }
    
    .step-title {
        font-size: 1.1rem;
    }
    
    .step-description {
        font-size: 0.9rem;
    }
    
    .step-icon {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .cooperation-process {
        padding: 20px;
    }
    
    .cooperation-process h3 {
        font-size: 1.5rem;
    }
    
    .process-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .process-timeline::before {
        left: 20px;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        margin-right: 1rem;
    }
    
    .step-content {
        padding: 15px;
    }
    
    .step-content::before {
        left: -8px;
        border-right-width: 8px;
        border-top-width: 8px;
        border-bottom-width: 8px;
    }
}