/* 核心样式 - 突出核心词+图片规范落地 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 999;
    padding: 15px 0;
}

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

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

.logo-main {
    font-size: 22px;
    color: #0052FF;
}

.logo-sub {
    font-size: 12px;
    color: #94A3B8;
}

.nav {
    display: flex;
    gap: 28px;
    margin: 0 20px;
}

.nav-item {
    font-size: 14px;
    color: #475569;
    transition: color 0.3s;
    position: relative;
}

.nav-item:hover {
    color: #0052FF;
}

.nav-item:after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #0052FF;
    transition: width 0.3s;
}

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

.search-box {
    position: relative;
    width: 220px;
    margin-right: 15px;
}

.search-box input {
    width: 100%;
    padding: 8px 16px 8px 36px;
    border: 1px solid #E2E8F0;
    border-radius: 20px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.3s;
}

.search-box input:focus {
    border-color: #0052FF;
}

.search-box .u-ico {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #94A3B8;
}

.btn {
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #0052FF;
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: #0040DB;
    transform: translateY(-2px);
}

/* 首屏Banner */
.hero {
    margin-top: 80px;
    position: relative;
}

.hero-container {
    position: relative;
    width: 100%;
    height: 650px;
    overflow: hidden;
    border-radius: 8px;
}

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

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #FFFFFF;
    width: 100%;
    padding: 0 20px;
}

.hero-title {
    font-size: 42px;
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 32px;
    text-shadow: 0 1px 5px rgba(0,0,0,0.2);
}

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
}

.btn-secondary {
    background-color: rgba(255,255,255,0.2);
    color: #FFFFFF;
    border: 1px solid #FFFFFF;
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.3);
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-tags span {
    font-size: 12px;
    background-color: rgba(255,255,255,0.15);
    padding: 4px 12px;
    border-radius: 16px;
}

/* 通用板块样式 */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 32px;
    color: #0F172A;
    margin-bottom: 12px;
}

.section-divider {
    width: 80px;
    height: 4px;
    background-color: #0052FF;
    margin: 0 auto;
    border-radius: 2px;
}

.section-desc {
    font-size: 14px;
    color: #475569;
    margin-top: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 图片容器占位机制（100%避免CLS） */
.img-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
}

.img-container-1x1 {
    padding-top: 100%; /* 1:1比例 */
}

.img-container-3x2 {
    padding-top: 66.67%; /* 3:2比例 */
}

.img-container-6x7 {
    padding-top: 116.67%; /* 6:7比例 */
}

.img-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 官网简介 */
.official-intro {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.intro-content {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.intro-img {
    flex: 1 1 400px;
}

.intro-text {
    flex: 1 1 500px;
}

.intro-subtitle {
    font-size: 20px;
    color: #0F172A;
    margin-bottom: 16px;
}

.intro-desc {
    font-size: 14px;
    color: #334155;
    margin-bottom: 24px;
    line-height: 1.8;
}

.intro-advantages {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.intro-adv-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #475569;
    background-color: #FFFFFF;
    padding: 8px 16px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.intro-adv-item .u-ico {
    color: #0052FF;
}

/* 官网产品 */
.official-products {
    padding: 80px 0;
}

.products-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.product-card {
    background-color: #FFFFFF;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.product-img {
    width: 100%;
}

.product-info {
    padding: 24px;
}

.product-name {
    font-size: 18px;
    color: #0F172A;
    margin-bottom: 8px;
}

.product-desc {
    font-size: 13px;
    color: #475569;
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-item {
    font-size: 12px;
    color: #64748B;
    background-color: #F1F5F9;
    padding: 4px 12px;
    border-radius: 12px;
}

.btn-product {
    display: block;
    width: 100%;
    text-align: center;
    border: 1px solid #0052FF;
    color: #0052FF;
}

.btn-product:hover {
    background-color: #EEF2FF;
}

/* 痛点解决方案 */
.official-solutions {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.solution-card {
    background-color: #FFFFFF;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.solution-icon {
    width: 40px;
    height: 40px;
    background-color: #EEF2FF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: #0052FF;
}

.solution-title {
    font-size: 16px;
    color: #0F172A;
    margin-bottom: 8px;
}

.solution-pain {
    font-size: 12px;
    color: #64748B;
    margin-bottom: 16px;
}

.solution-img {
    margin-bottom: 16px;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.solution-list li {
    font-size: 13px;
    color: #334155;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.solution-list li:before {
    content: "✓";
    color: #10B981;
    font-weight: 600;
    margin-top: 2px;
}

/* 正品保障 */
.official-guarantee {
    padding: 80px 0;
}

.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.guarantee-item {
    text-align: center;
    padding: 24px;
    background-color: #F8FAFC;
    border-radius: 8px;
}

.guarantee-icon {
    width: 60px;
    height: 60px;
    background-color: #EEF2FF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #0052FF;
}

.guarantee-title {
    font-size: 16px;
    color: #0F172A;
    margin-bottom: 8px;
}

.guarantee-desc {
    font-size: 13px;
    color: #475569;
}

.guarantee-img {
    max-width: 500px;
    margin: 0 auto;
}

/* 售后支持 */
.official-aftersales {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.aftersales-content {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.aftersales-left {
    flex: 1 1 400px;
}

.aftersales-right {
    flex: 1 1 500px;
}

.aftersales-subtitle {
    font-size: 20px;
    color: #0F172A;
    margin-bottom: 24px;
}

.aftersales-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.aftersales-list li {
    font-size: 14px;
    color: #334155;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.aftersales-list li .u-ico {
    color: #0052FF;
    margin-top: 3px;
}

.contact-subtitle {
    font-size: 16px;
    color: #0F172A;
    margin-bottom: 16px;
}

.btn-contact {
    padding: 12px 32px;
    font-size: 16px;
}

.contact-time {
    font-size: 12px;
    color: #64748B;
    margin-top: 8px;
}

/* FAQ板块 */
.official-faq {
    padding: 80px 0;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
    background-color: #FFFFFF;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    overflow: hidden;
}

.faq-tab {
    display: flex;
    border-bottom: 1px solid #E2E8F0;
}

.faq-tab-btn {
    flex: 1;
    padding: 16px;
    font-size: 14px;
    color: #475569;
    background-color: #F8FAFC;
    transition: all 0.3s;
}

.faq-tab-btn.active {
    background-color: #FFFFFF;
    color: #0052FF;
    border-bottom: 2px solid #0052FF;
}

.faq-tab-btn:hover:not(.active) {
    background-color: #EEF2FF;
}

.faq-content {
    padding: 24px;
}

.faq-panel {
    display: none;
}

.faq-panel.active {
    display: block;
}

.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid #F1F5F9;
    padding-bottom: 20px;
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-question {
    font-size: 15px;
    color: #0F172A;
    margin-bottom: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:after {
    content: "▼";
    font-size: 12px;
    color: #94A3B8;
    transition: transform 0.3s;
}

.faq-item.active .faq-question:after {
    transform: rotate(180deg);
}

.faq-answer {
    font-size: 13px;
    color: #334155;
    line-height: 1.8;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    margin-bottom: 8px;
}

/* 底部 */
.footer {
    background-color: #0F172A;
    color: #94A3B8;
    padding: 60px 0 20px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo-text h3 {
    font-size: 18px;
    color: #FFFFFF;
    margin-bottom: 4px;
}

.footer-logo-text p {
    font-size: 12px;
    color: #94A3B8;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
}

.link-group {
    min-width: 120px;
}

.link-title {
    font-size: 14px;
    color: #FFFFFF;
    margin-bottom: 16px;
}

.link-item {
    display: block;
    font-size: 12px;
    color: #94A3B8;
    margin-bottom: 8px;
    transition: color 0.3s;
}

.link-item:hover {
    color: #FFFFFF;
}

.footer-middle {
    margin-bottom: 40px;
    padding-top: 20px;
    border-top: 1px solid #1E293B;
}

.footer-desc {
    font-size: 12px;
    line-height: 1.8;
    max-width: 1000px;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid #1E293B;
    font-size: 11px;
    line-height: 1.8;
}

.disclaimer {
    margin-top: 8px;
}

/* 核心样式 - 突出核心词+图片规范落地 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 999;
    padding: 15px 0;
}

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

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

.logo-main {
    font-size: 22px;
    color: #0052FF;
}

.logo-sub {
    font-size: 12px;
    color: #94A3B8;
}

.nav {
    display: flex;
    gap: 28px;
    margin: 0 20px;
}

.nav-item {
    font-size: 14px;
    color: #475569;
    transition: color 0.3s;
    position: relative;
}

.nav-item:hover {
    color: #0052FF;
}

.nav-item:after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #0052FF;
    transition: width 0.3s;
}

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

.search-box {
    position: relative;
    width: 220px;
    margin-right: 15px;
}

.search-box input {
    width: 100%;
    padding: 8px 16px 8px 36px;
    border: 1px solid #E2E8F0;
    border-radius: 20px;
    font-size: 13px;
    outline: none;
    transition: border-color 0.3s;
}

.search-box input:focus {
    border-color: #0052FF;
}

.search-box .u-ico {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #94A3B8;
}

.btn {
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #0052FF;
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: #0040DB;
    transform: translateY(-2px);
}

/* 首屏Banner */
.hero {
    margin-top: 80px;
    position: relative;
}

.hero-container {
    position: relative;
    width: 100%;
    height: 650px;
    overflow: hidden;
    border-radius: 8px;
}

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

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #FFFFFF;
    width: 100%;
    padding: 0 20px;
}

.hero-title {
    font-size: 42px;
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-desc {
    font-size: 18px;
    margin-bottom: 32px;
    text-shadow: 0 1px 5px rgba(0,0,0,0.2);
}

.btn-large {
    padding: 14px 32px;
    font-size: 16px;
}

.btn-secondary {
    background-color: rgba(255,255,255,0.2);
    color: #FFFFFF;
    border: 1px solid #FFFFFF;
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.3);
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-tags span {
    font-size: 12px;
    background-color: rgba(255,255,255,0.15);
    padding: 4px 12px;
    border-radius: 16px;
}

/* 通用板块样式 */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 32px;
    color: #0F172A;
    margin-bottom: 12px;
}

.section-divider {
    width: 80px;
    height: 4px;
    background-color: #0052FF;
    margin: 0 auto;
    border-radius: 2px;
}

.section-desc {
    font-size: 14px;
    color: #475569;
    margin-top: 16px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 图片容器占位机制（100%避免CLS） */
.img-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
}

.img-container-1x1 {
    padding-top: 100%; /* 1:1比例 */
}

.img-container-3x2 {
    padding-top: 66.67%; /* 3:2比例 */
}

.img-container-6x7 {
    padding-top: 116.67%; /* 6:7比例 */
}

.img-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 官网简介 */
.official-intro {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.intro-content {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.intro-img {
    flex: 1 1 400px;
}

.intro-text {
    flex: 1 1 500px;
}

.intro-subtitle {
    font-size: 20px;
    color: #0F172A;
    margin-bottom: 16px;
}

.intro-desc {
    font-size: 14px;
    color: #334155;
    margin-bottom: 24px;
    line-height: 1.8;
}

.intro-advantages {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.intro-adv-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: #475569;
    background-color: #FFFFFF;
    padding: 8px 16px;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.intro-adv-item .u-ico {
    color: #0052FF;
}

/* 官网产品 */
.official-products {
    padding: 80px 0;
}

.products-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.product-card {
    background-color: #FFFFFF;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
}

.product-img {
    width: 100%;
}

.product-info {
    padding: 24px;
}

.product-name {
    font-size: 18px;
    color: #0F172A;
    margin-bottom: 8px;
}

.product-desc {
    font-size: 13px;
    color: #475569;
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.feature-item {
    font-size: 12px;
    color: #64748B;
    background-color: #F1F5F9;
    padding: 4px 12px;
    border-radius: 12px;
}

.btn-product {
    display: block;
    width: 100%;
    text-align: center;
    border: 1px solid #0052FF;
    color: #0052FF;
}

.btn-product:hover {
    background-color: #EEF2FF;
}

/* 痛点解决方案 */
.official-solutions {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.solution-card {
    background-color: #FFFFFF;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.solution-icon {
    width: 40px;
    height: 40px;
    background-color: #EEF2FF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: #0052FF;
}

.solution-title {
    font-size: 16px;
    color: #0F172A;
    margin-bottom: 8px;
}

.solution-pain {
    font-size: 12px;
    color: #64748B;
    margin-bottom: 16px;
}

.solution-img {
    margin-bottom: 16px;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.solution-list li {
    font-size: 13px;
    color: #334155;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.solution-list li:before {
    content: "✓";
    color: #10B981;
    font-weight: 600;
    margin-top: 2px;
}

/* 正品保障 */
.official-guarantee {
    padding: 80px 0;
}

.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.guarantee-item {
    text-align: center;
    padding: 24px;
    background-color: #F8FAFC;
    border-radius: 8px;
}

.guarantee-icon {
    width: 60px;
    height: 60px;
    background-color: #EEF2FF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #0052FF;
}

.guarantee-title {
    font-size: 16px;
    color: #0F172A;
    margin-bottom: 8px;
}

.guarantee-desc {
    font-size: 13px;
    color: #475569;
}

.guarantee-img {
    max-width: 500px;
    margin: 0 auto;
}

/* 售后支持 */
.official-aftersales {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.aftersales-content {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.aftersales-left {
    flex: 1 1 400px;
}

.aftersales-right {
    flex: 1 1 500px;
}

.aftersales-subtitle {
    font-size: 20px;
    color: #0F172A;
    margin-bottom: 24px;
}

.aftersales-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.aftersales-list li {
    font-size: 14px;
    color: #334155;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.aftersales-list li .u-ico {
    color: #0052FF;
    margin-top: 3px;
}

.contact-subtitle {
    font-size: 16px;
    color: #0F172A;
    margin-bottom: 16px;
}

.btn-contact {
    padding: 12px 32px;
    font-size: 16px;
}

.contact-time {
    font-size: 12px;
    color: #64748B;
    margin-top: 8px;
}

/* FAQ板块 */
.official-faq {
    padding: 80px 0;
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
    background-color: #FFFFFF;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    overflow: hidden;
}

.faq-tab {
    display: flex;
    border-bottom: 1px solid #E2E8F0;
}

.faq-tab-btn {
    flex: 1;
    padding: 16px;
    font-size: 14px;
    color: #475569;
    background-color: #F8FAFC;
    transition: all 0.3s;
}

.faq-tab-btn.active {
    background-color: #FFFFFF;
    color: #0052FF;
    border-bottom: 2px solid #0052FF;
}

.faq-tab-btn:hover:not(.active) {
    background-color: #EEF2FF;
}

.faq-content {
    padding: 24px;
}

.faq-panel {
    display: none;
}

.faq-panel.active {
    display: block;
}

.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid #F1F5F9;
    padding-bottom: 20px;
}

.faq-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.faq-question {
    font-size: 15px;
    color: #0F172A;
    margin-bottom: 8px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question:after {
    content: "▼";
    font-size: 12px;
    color: #94A3B8;
    transition: transform 0.3s;
}

.faq-item.active .faq-question:after {
    transform: rotate(180deg);
}

.faq-answer {
    font-size: 13px;
    color: #334155;
    line-height: 1.8;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    margin-bottom: 8px;
}

/* 底部 */
.footer {
    background-color: #0F172A;
    color: #94A3B8;
    padding: 60px 0 20px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo-text h3 {
    font-size: 18px;
    color: #FFFFFF;
    margin-bottom: 4px;
}

.footer-logo-text p {
    font-size: 12px;
    color: #94A3B8;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
}

.link-group {
    min-width: 120px;
}

.link-title {
    font-size: 14px;
    color: #FFFFFF;
    margin-bottom: 16px;
}

.link-item {
    display: block;
    font-size: 12px;
    color: #94A3B8;
    margin-bottom: 8px;
    transition: color 0.3s;
}

.link-item:hover {
    color: #FFFFFF;
}

.footer-middle {
    margin-bottom: 40px;
    padding-top: 20px;
    border-top: 1px solid #1E293B;
}

.footer-desc {
    font-size: 12px;
    line-height: 1.8;
    max-width: 1000px;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid #1E293B;
    font-size: 11px;
    line-height: 1.8;
}

.disclaimer {
    margin-top: 8px;
}

/* 回到顶部 */
.back-to-top {
    position