/* Service Center Page Styles */

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

:root {
    --primary-color: #1a365d;
    --secondary-color: #2c5282;
    --accent-color: #3182ce;
    --text-dark: #1a202c;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --bg-dark: #1a202c;
    --border-color: #e2e8f0;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Saira', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1720px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.section-subtitle {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 40px;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo img {
    height: 40px;
    width: auto;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.nav-menu .has-dropdown i {
    font-size: 10px;
    margin-left: 5px;
}

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

.phone-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.header.scrolled .phone-link {
    color: var(--text-dark);
}

.phone-link i {
    font-size: 14px;
}

.search-btn,
.lang-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: white;
    transition: var(--transition);
}

.header.scrolled .search-btn,
.header.scrolled .lang-btn {
    color: var(--text-dark);
}

.search-btn:hover,
.lang-btn:hover {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: white;
}

.header.scrolled .mobile-menu-btn {
    color: var(--text-dark);
}

/* Service Center Hero */
.service-center-hero {
    position: relative;
    height: 55vh;
    min-height: 380px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.service-center-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.service-center-hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-center-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 30, 60, 0.75) 0%, rgba(0, 30, 60, 0.35) 100%);
    z-index: -1;
}

.service-center-hero-content {
    color: white;
    padding-top: 60px;
    text-align: center;
}

.service-center-hero-content h1 {
    font-size: 80px;
    font-weight: 700;
    line-height: 1.4;
    max-width: none;
}

/* Service Process */
.service-process {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.process-steps {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 0;
}

.process-step {
    flex: 1;
    background-color: var(--bg-white);
    padding: 30px 20px;
    text-align: left;
}

.step-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: 20px;
    font-size: 32px;
    color: var(--text-dark);
}

.step-icon img {
    width: 100%;
    height: 100%;
}

.process-step h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
}

.process-step p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.6;
}

.process-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    background-color: var(--bg-light);
    color: var(--text-dark);
    font-size: 18px;
}

/* Quality Control Section */
.quality-control-section {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.quality-control-section .section-title {
    text-align: left;
    margin-bottom: 10px;
}

.section-subtitle-center {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
    margin-bottom: 20px;
}

.quality-intro {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    text-align: left;
    max-width: 1200px;
    margin: 0 0 50px 0;
    padding: 25px 30px;
    background: linear-gradient(145deg, #ffffff, #f5f5f5);
    border-radius: 12px;
    box-shadow:
        6px 6px 12px #e0e0e0,
        -6px -6px 12px #ffffff;
}

.process-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    text-align: left;
    margin-bottom: 35px;
    position: relative;
    padding-left: 15px;
}

.process-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.quality-steps {
    align-items: stretch;
    gap: 20px;
}

.quality-step {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border-radius: 16px;
    padding: 30px 25px;
    box-shadow:
        8px 8px 16px #d1d1d1,
        -8px -8px 16px #ffffff,
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: none;
    flex: 1;
}

.quality-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.quality-step:hover {
    transform: translateY(-8px);
    box-shadow:
        12px 12px 24px #c5c5c5,
        -12px -12px 24px #ffffff,
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.quality-step:hover::before {
    transform: scaleX(1);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(145deg, var(--primary-color), var(--secondary-color));
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    box-shadow:
        4px 4px 8px rgba(26, 54, 93, 0.3),
        -4px -4px 8px rgba(255, 255, 255, 0.8);
    position: relative;
    z-index: 1;
}

.quality-step h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
}

.quality-step p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.7;
}

/* Testing Equipment */
.testing-equipment {
    margin-top: 60px;
    padding: 40px;
    background: linear-gradient(145deg, #ffffff, #f5f5f5);
    border-radius: 16px;
    box-shadow:
        8px 8px 16px #d1d1d1,
        -8px -8px 16px #ffffff;
    position: relative;
    overflow: hidden;
}

.testing-equipment::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.equipment-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.equipment-title::before {
    content: '\f0ad';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 20px;
    color: var(--primary-color);
}

.equipment-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 30px;
}

.equipment-list li {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    padding-left: 24px;
    position: relative;
}

.equipment-list li::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--primary-color);
    font-size: 12px;
}

.equipment-note {
    font-size: 13px;
    color: var(--text-dark);
    font-weight: 500;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.equipment-note::before {
    content: '\f05a';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--accent-color);
}

/* Download Section */
.download-section {
    margin-top: 40px;
}

.download-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.download-desc {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 20px;
}

.download-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.download-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
    padding: 30px 20px;
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-dark);
    transition: var(--transition);
    box-shadow:
        4px 4px 8px #d1d1d1,
        -4px -4px 8px #ffffff;
}

.download-link:hover {
    background: linear-gradient(145deg, var(--primary-color), var(--secondary-color));
    border-color: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-5px);
    box-shadow:
        8px 8px 16px rgba(26, 54, 93, 0.3),
        -4px -4px 8px rgba(255, 255, 255, 0.8);
}

.download-link i {
    font-size: 32px;
    color: var(--primary-color);
    transition: var(--transition);
}

.download-link:hover i {
    color: var(--bg-white);
    transform: scale(1.1);
}

.download-link span {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.5;
}

/* Service Banner */
.service-banner {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.service-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.service-banner-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.service-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 30, 60, 0.8) 0%, rgba(0, 30, 60, 0.4) 100%);
    z-index: -1;
}

.service-banner-content {
    color: white;
}

.service-banner-content h3 {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 20px;
}

.btn-contact {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background-color: white;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    border-radius: 2px;
    transition: var(--transition);
}

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

/* Our Policy */
.our-policy {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.our-policy .section-title {
    margin-bottom: 40px;
}

.policy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.policy-card {
    padding: 40px 30px;
    border-right: 1px solid var(--border-color);
}

.policy-card:last-child {
    border-right: none;
}

.policy-link {
    display: block;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.policy-link:hover {
    background-color: var(--bg-light);
}

.policy-link h4,
.policy-link p {
    color: var(--text-dark);
}

.policy-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: 20px;
    font-size: 28px;
    color: var(--text-dark);
}

.policy-icon img {
    width: 100%;
    height: 100%;
}

.policy-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.policy-card p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.6;
}

/* Claim Policy Section */
.claim-policy-section {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.claim-policy-section .section-title {
    text-align: left;
    margin-bottom: 10px;
}

.claim-policy-section .section-subtitle-center {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    text-align: left;
    margin-bottom: 50px;
}

/* Defect Grid - Four Cards Layout */
.defect-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.defect-card {
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    border-radius: 16px;
    padding: 30px;
    box-shadow:
        8px 8px 16px #d1d1d1,
        -8px -8px 16px #ffffff,
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.defect-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.defect-card:hover {
    transform: translateY(-8px);
    box-shadow:
        12px 12px 24px #c5c5c5,
        -12px -12px 24px #ffffff,
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.defect-card:hover::before {
    transform: scaleX(1);
}

.defect-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.defect-number {
    width: 45px;
    height: 45px;
    background: linear-gradient(145deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    box-shadow:
        4px 4px 8px rgba(26, 54, 93, 0.3),
        -4px -4px 8px rgba(255, 255, 255, 0.8);
    flex-shrink: 0;
}

.defect-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0;
}

.defect-card-content {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.defect-info {
    padding: 15px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 10px;
    border-left: 3px solid var(--accent-color);
}

.info-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.info-text {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.claim-content {
    max-width: 900px;
}

.claim-item-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.claim-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 14px;
}

.claim-table thead {
    background-color: #c0c0c0;
}

.claim-table th {
    padding: 12px 20px;
    text-align: center;
    font-weight: 600;
    color: var(--text-dark);
    border: 1px solid #999;
}

.claim-table td {
    padding: 12px 20px;
    text-align: center;
    color: var(--text-dark);
    border: 1px solid #999;
}

.claim-table tbody tr:nth-child(even) {
    background-color: #f5f5f5;
}

.claim-table tbody tr:nth-child(odd) {
    background-color: #ffffff;
}

.claim-note {
    font-size: 14px;
    color: var(--text-dark);
    margin-top: 15px;
    margin-bottom: 40px;
}

.defect-subsection {
    margin-bottom: 30px;
}

.defect-subtitle {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
    padding-left: 15px;
    position: relative;
}

.defect-subtitle::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.defect-table td:first-child {
    width: 25%;
    font-weight: 500;
}

.defect-table td:last-child {
    text-align: left;
    line-height: 1.8;
}

.thickness-table td:first-child {
    width: 20%;
    font-weight: 500;
}

.thickness-table td:last-child {
    text-align: left;
    line-height: 1.8;
}

.claim-download-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.claim-download-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.claim-download-desc {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 20px;
}

/* FAQ Section */
.faq-section {
    padding: 60px 0;
    background-color: var(--bg-white);
    min-height: 750px;
}

.faq-wrapper {
    display: grid;
    grid-template-columns: 200px 0.75fr;
    gap: 60px;
}

.faq-wrapper .section-title {
    font-size: 32px;
    font-weight: 700;
}

.faq-list {
    border-top: 1px solid var(--border-color);
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    cursor: pointer;
}

.faq-question h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.faq-question i {
    font-size: 14px;
    color: var(--text-dark);
    transition: transform 0.3s ease, opacity 0.2s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease-out,
        opacity 0.2s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    opacity: 1;
}

.faq-answer p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.8;
    padding-bottom: 15px;
    padding-right: 40px;
}

/* Certificates Section */
.certificates-section {
    padding: 80px 0;
    background-color: var(--bg-dark);
}

.certificates-section .section-title {
    color: white;
    margin-bottom: 40px;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 20px;
}

.certificate-item {
    background-color: white;
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 3/4;
}

.certificate-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 页脚 */
.footer {
    background-image: url('https://www.conbyth.com/images/footer-bg.webp');
    color: var(--text-dark);
    padding: 50px 0 15px;
    position: relative;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background-image: url('https://www.conbyth.com/images/world-map.webp');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: right center;
    opacity: 0.15;
    pointer-events: none;
}

.footer-content {
    display: flex;
    gap: 60px;
    margin-bottom: 0px;
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* Logo Section */
.footer-section.logo-section {
    display: flex;
    flex-direction: column;
    flex: 5;
}

.footer-section.nav-section {
    flex: 2;
}

.footer-section.products-section {
    flex: 2;
}

/* 合并后的 Quick Links + Products 区域 */
.footer-section.nav-products-section {
    flex: 4;
}

.nav-products-row {
    display: flex;
    gap: 30px;
}

.quick-links-col {
    flex: 1;
}

.products-col {
    flex: 1;
}

.footer-section.contact-section {
    flex: 2.5;
}

.footer-logo-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.footer-logo {
    flex-shrink: 0;
}

.footer-logo img {
    height: 40px;
    width: auto;
}

.footer-brand h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.company-intro {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.8;
}

.company-intro strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* Nav Section */
.footer-nav-columns {
    display: flex;
    gap: 20px;
}

.footer-section.nav-section h4,
.footer-section.products-section h4,
.footer-section.contact-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.footer-nav-list,
.footer-products-list {
    list-style: none;
}

.footer-nav-list li,
.footer-products-list li {
    margin-bottom: 8px;
}

.footer-nav-list a,
.footer-products-list a {
    font-size: 13px;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-nav-list a:hover,
.footer-products-list a:hover {
    color: var(--primary-color);
}

/* Contact Section */
.contact-section .contact-list {
    list-style: none;
    margin-bottom: 15px;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

.contact-list li i {
    color: var(--text-light);
    font-size: 14px;
    margin-top: 2px;
    flex-shrink: 0;
}

.contact-list li span {
    flex: 1;
}

.social-links {
    display: flex;
    gap: 10px;
}

.social-links a {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--text-light);
    text-decoration: none;
    background-color: transparent;
}

.social-links a:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

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

/* Footer Bottom */
.footer-bottom {
    position: relative;
    z-index: 1;
}

.footer-bottom .container {
    border-top: 1px solid #cfd5dd;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    font-size: 13px;
    color: var(--text-light);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

.footer-bottom-left {
    padding: 15px 0;
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-bottom-left p {
    margin: 0;
}

.design-by {
    display: flex;
    align-items: center;
    gap: 5px;
}

.design-by img {
    height: 16px;
}

.footer-bottom-right .language-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.language-selector:hover {
    color: var(--primary-color);
}

/* 响应式 */
@media (max-width: 1024px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        padding: 12px 30px;
    }

    .nav-menu a {
        color: var(--text-dark);
    }

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

    .phone-link span {
        display: none;
    }

    .process-steps {
        flex-wrap: wrap;
        justify-content: center;
    }

    .quality-step {
        flex: 0 0 calc(50% - 10px);
        margin-bottom: 20px;
    }

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

    .process-arrow {
        display: none;
    }

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

    .certificates-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .links-section {
        flex-wrap: wrap;
    }

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

@media (max-width: 768px) {
    .service-center-hero-content h1 {
        font-size: 36px;
    }

    .process-steps {
        flex-direction: column;
        align-items: center;
    }

    .quality-step {
        flex: 0 0 100%;
        max-width: 100%;
        padding: 25px 20px;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }

    .quality-step h4 {
        font-size: 14px;
    }

    .process-step {
        max-width: 100%;
    }

    .quality-control-section {
        padding: 50px 0;
    }

    .section-subtitle-center {
        font-size: 16px;
    }

    .quality-intro {
        font-size: 13px;
        padding: 20px;
    }

    .process-title {
        font-size: 15px;
    }

    .testing-equipment {
        padding: 20px;
        margin-top: 30px;
    }

    .equipment-title,
    .download-title {
        font-size: 15px;
    }

    .equipment-list li {
        font-size: 12px;
    }

    .download-links {
        grid-template-columns: 1fr;
    }

    .download-link {
        padding: 20px 15px;
    }

    .download-link i {
        font-size: 24px;
    }

    .download-link span {
        font-size: 12px;
    }

    .claim-policy-section {
        padding: 50px 0;
    }

    .claim-policy-section .section-subtitle-center {
        font-size: 16px;
        margin-bottom: 30px;
    }

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

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

    .defect-card-title {
        font-size: 16px;
    }

    .defect-number {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .claim-table {
        font-size: 12px;
    }

    .claim-table th,
    .claim-table td {
        padding: 10px 12px;
    }

    .defect-table td:first-child {
        width: 30%;
    }

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

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

    .faq-question h4 {
        font-size: 13px;
        padding-right: 20px;
    }

    .footer {
        padding: 30px 0 0;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        padding: 0 16px;
        margin-bottom: 30px;
    }

    .footer-section.logo-section,
    .footer-section.nav-section,
    .footer-section.products-section,
    .footer-section.contact-section,
    .footer-section.nav-products-section {
        flex: none;
    }

    .nav-products-row {
        gap: 20px;
    }

    .quick-links-col,
    .products-col {
        flex: 1;
        min-width: 0;
    }

    .quick-links-col h4,
    .products-col h4 {
        font-size: 13px;
        margin-bottom: 10px;
    }

    .footer-nav-columns {
        gap: 16px;
    }

    .footer-nav-list li,
    .footer-products-list li {
        margin-bottom: 6px;
    }

    .footer-nav-list a,
    .footer-products-list a {
        font-size: 11px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        display: block;
    }

    .footer-logo img {
        height: 32px;
    }

    .company-intro {
        font-size: 12px;
    }

    .footer-section.nav-section h4,
    .footer-section.products-section h4,
    .footer-section.contact-section h4 {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .contact-list li {
        font-size: 12px;
        margin-bottom: 8px;
    }

    .social-links a {
        width: 28px;
        height: 28px;
    }

    .footer-bottom .container {
        padding: 0 16px;
    }

    .footer-bottom-left {
        padding: 12px 0;
        font-size: 12px;
    }
}



/* ==================== Mega Menu ==================== */
.has-megamenu {
    position: relative;
}

.mega-menu {
    position: absolute;
    top: 150%;
    left: 50%;
    transform: translateX(-50%);
    background: #f0f0f0;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 8px 0;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 1001;
    margin-top: 10px;
}

.has-megamenu:hover .mega-menu {
    opacity: 1;
    visibility: visible;
    margin-top: 0;
}

.level1-link {
    display: block;
    padding: 12px 24px;
    color: #333333 !important;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.level1-link:hover {
    background: #e0e0e0;
    color: var(--primary-color) !important;
}

@media (max-width: 1024px) {
    .mega-menu {
        display: none;
    }
}

/* 大屏手机适配 (576px) */
@media (max-width: 576px) {
    .container {
        padding: 0 16px;
    }

    .navbar {
        padding: 15px 0;
    }

    .logo img {
        height: 34px;
    }

    .service-center-hero {
        height: 45vh;
        min-height: 320px;
    }

    .service-center-hero-content h1 {
        font-size: 42px;
    }

    .service-process {
        padding: 50px 0;
    }

    .process-steps {
        flex-direction: column;
        gap: 16px;
    }

    .process-step {
        padding: 24px 20px;
    }

    .step-icon {
        width: 44px;
        height: 44px;
        font-size: 28px;
        margin-bottom: 16px;
    }

    .process-step h4 {
        font-size: 14px;
    }

    .process-step p {
        font-size: 12px;
    }

    .process-arrow {
        display: none;
    }

    .quality-control-section {
        padding: 50px 0;
    }

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

    .section-subtitle-center {
        font-size: 16px;
    }

    .quality-intro {
        font-size: 13px;
        padding: 20px;
        margin-bottom: 30px;
    }

    .process-title {
        font-size: 16px;
    }

    .quality-steps {
        flex-direction: column;
        gap: 16px;
    }

    .quality-step {
        padding: 24px 20px;
    }

    .step-number {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }

    .quality-step h4 {
        font-size: 14px;
    }

    .quality-step p {
        font-size: 12px;
    }

    .testing-equipment {
        padding: 24px 20px;
        margin-top: 40px;
    }

    .equipment-title {
        font-size: 16px;
    }

    .equipment-list {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .equipment-list li {
        font-size: 12px;
    }

    .download-section {
        margin-top: 30px;
    }

    .download-title {
        font-size: 16px;
    }

    .download-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .download-link {
        padding: 24px 16px;
    }

    .download-link i {
        font-size: 28px;
    }

    .download-link span {
        font-size: 12px;
    }

    .service-banner {
        height: 400px;
    }

    .service-banner-content h3 {
        font-size: 20px;
    }

    .our-policy {
        padding: 50px 0;
    }

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

    .policy-card {
        padding: 24px 20px;
    }

    .policy-icon {
        width: 36px;
        height: 36px;
        font-size: 24px;
    }

    .policy-card h4 {
        font-size: 14px;
    }

    .policy-card p {
        font-size: 11px;
    }

    .claim-policy-section {
        padding: 50px 0;
    }

    .claim-policy-section .section-subtitle-center {
        font-size: 16px;
        margin-bottom: 30px;
    }

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

    .defect-card {
        padding: 24px 20px;
    }

    .defect-card-title {
        font-size: 16px;
    }

    .faq-section {
        padding: 40px 0;
        min-height: auto;
    }

    .faq-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .faq-wrapper .section-title {
        font-size: 24px;
    }

    .faq-question {
        padding: 16px 0;
    }

    .faq-question h4 {
        font-size: 13px;
    }

    .certificates-section {
        padding: 50px 0;
    }

    .certificates-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .footer {
        padding: 40px 0 12px;
    }

    .footer-content {
        flex-direction: column;
        gap: 28px;
        padding: 0 16px;
    }

    .footer-section.logo-section,
    .footer-section.nav-section,
    .footer-section.products-section,
    .footer-section.contact-section {
        flex: none;
    }

    .footer-logo img {
        height: 34px;
    }

    .company-intro {
        font-size: 13px;
    }

    .footer-nav-columns {
        gap: 35px;
    }

    .footer-section.nav-section h4,
    .footer-section.products-section h4,
    .footer-section.contact-section h4 {
        font-size: 15px;
        margin-bottom: 14px;
    }

    .contact-list li {
        font-size: 13px;
        margin-bottom: 10px;
    }

    .social-links a {
        width: 30px;
        height: 30px;
    }

    .footer-bottom .container {
        padding: 0 16px;
    }

    .footer-bottom-left {
        padding: 14px 0;
        font-size: 13px;
    }
}

/* 中屏手机适配 (430px) */
@media (max-width: 430px) {
    .container {
        padding: 0 16px;
    }

    .navbar {
        padding: 15px 0;
    }

    .logo img {
        height: 32px;
    }

    .service-center-hero {
        height: 40vh;
        min-height: 280px;
    }

    .service-center-hero-content h1 {
        font-size: 36px;
    }

    .service-process {
        padding: 40px 0;
    }

    .process-step {
        padding: 20px 16px;
    }

    .step-icon {
        width: 40px;
        height: 40px;
        font-size: 24px;
        margin-bottom: 12px;
    }

    .process-step h4 {
        font-size: 13px;
        margin-bottom: 12px;
    }

    .quality-control-section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 22px;
    }

    .section-subtitle-center {
        font-size: 15px;
    }

    .quality-intro {
        font-size: 12px;
        padding: 16px;
        margin-bottom: 24px;
    }

    .process-title {
        font-size: 15px;
        margin-bottom: 24px;
    }

    .quality-step {
        padding: 20px 16px;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 16px;
        margin-bottom: 16px;
    }

    .quality-step h4 {
        font-size: 13px;
    }

    .testing-equipment {
        padding: 20px 16px;
        margin-top: 30px;
    }

    .equipment-title {
        font-size: 15px;
        margin-bottom: 20px;
    }

    .download-section {
        margin-top: 24px;
    }

    .download-links {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .download-link {
        padding: 20px 16px;
        flex-direction: row;
        text-align: left;
        gap: 16px;
    }

    .download-link i {
        font-size: 24px;
    }

    .service-banner {
        height: 350px;
    }

    .service-banner-content h3 {
        font-size: 18px;
    }

    .btn-contact {
        padding: 10px 20px;
        font-size: 12px;
    }

    .our-policy {
        padding: 40px 0;
    }

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

    .policy-card {
        padding: 20px 16px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .policy-card:last-child {
        border-bottom: none;
    }

    .claim-policy-section {
        padding: 40px 0;
    }

    .claim-policy-section .section-subtitle-center {
        font-size: 14px;
    }

    .defect-card {
        padding: 20px 16px;
    }

    .defect-card-header {
        gap: 12px;
        margin-bottom: 20px;
    }

    .defect-number {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .defect-card-title {
        font-size: 15px;
    }

    .defect-info {
        padding: 12px;
    }

    .info-label {
        font-size: 11px;
    }

    .info-text {
        font-size: 12px;
    }

    .claim-table {
        font-size: 11px;
    }

    .claim-table th,
    .claim-table td {
        padding: 8px 10px;
    }

    .faq-wrapper .section-title {
        font-size: 22px;
    }

    .faq-question h4 {
        font-size: 12px;
    }

    .certificates-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .footer {
        padding: 35px 0 10px;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        padding: 0 16px;
    }

    .footer-section.logo-section,
    .footer-section.nav-section,
    .footer-section.products-section,
    .footer-section.contact-section {
        flex: none;
    }

    .footer-logo img {
        height: 32px;
    }

    .company-intro {
        font-size: 12px;
        line-height: 1.7;
    }

    .footer-nav-columns {
        gap: 30px;
    }

    .footer-section.nav-section h4,
    .footer-section.products-section h4,
    .footer-section.contact-section h4 {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .contact-list li {
        font-size: 12px;
        margin-bottom: 8px;
    }

    .social-links a {
        width: 28px;
        height: 28px;
    }

    .footer-bottom .container {
        padding: 0 16px;
    }

    .footer-bottom-left {
        padding: 12px 0;
        font-size: 12px;
    }
}

/* 小屏手机适配 (375px) */
@media (max-width: 375px) {
    .service-center-hero {
        height: 38vh;
        min-height: 260px;
    }

    .service-center-hero-content h1 {
        font-size: 32px;
    }

    .section-title {
        font-size: 20px;
    }

    .quality-intro {
        padding: 14px;
    }

    .step-icon {
        width: 36px;
        height: 36px;
        font-size: 22px;
    }

    .step-number {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }

    .service-banner {
        height: 320px;
    }

    .service-banner-content h3 {
        font-size: 16px;
    }

    .defect-card-title {
        font-size: 14px;
    }

    .claim-table {
        font-size: 10px;
    }

    .claim-table th,
    .claim-table td {
        padding: 6px 8px;
    }

    .certificates-grid {
        gap: 10px;
    }
}

/* 超小屏手机适配 (320px) */
@media (max-width: 320px) {
    .service-center-hero-content h1 {
        font-size: 28px;
    }

    .section-title {
        font-size: 18px;
    }

    .process-step h4,
    .quality-step h4 {
        font-size: 12px;
    }

    .service-banner {
        height: 300px;
    }

    .faq-wrapper .section-title {
        font-size: 18px;
    }
}