/* intro.css - Static landing page styles */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    min-width: 1280px;
}

.landing-page {
    font-family: 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #fff;
    padding-top: 70px;
    min-height: 100vh;
}

.container {
    width: 1280px;
    margin: 0 auto;
}

/* Banner */
.banner {
    background: radial-gradient(ellipse 100% 100% at 100% 0%, #8bbfff, #e5e3ff 50%, #fff),
        linear-gradient(180deg, rgba(255, 255, 255, 0), #ffffff 100%);
    padding: 70px 0 80px;
}

.banner-container {
    width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.banner-content {
    flex-shrink: 0;
}

.activity-tag {
    display: inline-block;
    padding: 0 20px;
    height: 34px;
    line-height: 34px;
    background: linear-gradient(90deg, #f10303 0%, #f8754a 100%);
    border-radius: 26px;
    box-shadow: 0px 4px 4px 0px #fa744b inset;
    color: #fff;
    text-align: center;
    font-size: 14px;
    margin-bottom: 16px;
}

.banner .title {
    font-size: 46px;
    font-weight: bold;
    color: #020202;
    line-height: 64px;
    margin: 0;
}

.banner .subtitle {
    font-size: 32px;
    font-weight: bold;
    color: #020202;
    line-height: 45px;
    margin: 0 0 16px;
}

.banner .feature-item {
    display: flex;
    align-items: center;
    color: #858586;
    font-size: 16px;
    line-height: 21px;
    margin-bottom: 10px;
}

.feature-icon {
    width: 16px;
    height: 16px;
    margin-right: 6px;
    background: #3171ff;
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
}

.feature-icon::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 3px;
    width: 4px;
    height: 7px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.banner .btn-group {
    display: flex;
    align-items: center;
    margin-top: 30px;
}
.banner .btn-group > * + * {
    margin-left: 18px;
}

.doc-link {
    color: #3171ff;
    font-size: 16px;
    text-decoration: none;
}

.doc-link:hover {
    text-decoration: underline;
}

.banner .tip {
    color: #858586;
    margin-top: 14px;
    font-size: 14px;
}

.banner-images {
    position: relative;
    width: 660px;
    height: 400px;
    flex-shrink: 0;
}

.banner-images .fade-up-wrapper {
    position: absolute;
}

.banner-images .fade-up-wrapper:nth-child(1) {
    left: 43.4%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
}

.banner-images .fade-up-wrapper:nth-child(2) {
    left: -120px;
    bottom: -36px;
    z-index: 2;
}

.banner-images .fade-up-wrapper:nth-child(3) {
    right: -10px;
    bottom: -30px;
    z-index: 2;
}

.banner-images .fade-up-wrapper:nth-child(4) {
    right: -10px;
    top: -30px;
    z-index: 2;
}

.banner-img-base {
    width: 692px;
    height: 445px;
}

.banner-img-1 {
    width: 290px;
    height: 212px;
}

.banner-img-2 {
    width: 263px;
    height: 156px;
}

.banner-img-3 {
    width: 253px;
    height: 189px;
}

/* Buttons */
.primary-btn {
    width: 168px;
    height: 42px;
    background: #3171ff;
    font-size: 16px;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.3s;
}

.primary-btn:hover {
    opacity: 0.8;
}

.primary-btn.banner-use {
    padding-left: 24px;
    padding-right: 24px;
}

.primary-btn.gradient {
    background: linear-gradient(90deg, #f10303 0%, #f8754a 100%);
    border-radius: 4px;
}

.demo-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 42px;
    padding: 0 24px;
    background: linear-gradient(90deg, #f10303 0%, #f8754a 100%);
    border-radius: 4px;
    color: #fff;
    font-size: 16px;
    border: none;
    cursor: pointer;
    transition: opacity 0.3s;
}

.demo-btn svg {
    margin-right: 6px;
}

.demo-btn:hover {
    opacity: 0.8;
}

/* Sections */
.section {
    padding: 40px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #2d2d2d;
    text-align: center;
    margin: 0 0 50px;
}

.content-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.text-content {
    padding-top: 100px;
    width: 50%;
    flex-shrink: 0;
}

.part-title {
    font-size: 36px;
    font-weight: bold;
    color: #020202;
    margin: 0 0 32px;
}

.part-desc {
    width: 520px;
    font-size: 18px;
    color: #858586;
    line-height: 1.6;
    margin: 0 0 32px;
}

.image-content {
    position: relative;
    width: 50%;
    height: 420px;
    flex-shrink: 0;
}

.part-img {
    position: absolute;
}

/* Part 1 images */
.part1-1 {
    right: 27px;
    top: 43px;
    width: 565px;
}

.part1-2 {
    top: 157px;
    right: 5px;
    width: 643px;
    z-index: 2;
}

/* Part 2 images */
.part-2 .text-content {
    padding-top: 50px;
}
.part2-1 {
    left: 0;
    top: 0;
    width: 565px;
}

.part2-2 {
    left: -40px;
    top: 170px;
    width: 619px;
    z-index: 2;
}

.part2-3 {
    left: 244px;
    top: 122px;
    width: 262px;
    z-index: 2;
}

/* Part 3 images */
.part3-1 {
    right: 0;
    top: 43px;
    width: 565px;
}

.part3-2 {
    right: 454px;
    top: 244px;
    width: 152px;
    z-index: 2;
}

.part3-3 {
    right: 13px;
    top: 130px;
    width: 186px;
    z-index: 2;
}

/* Part 4 images */
.part4-1 {
    left: -40px;
    top: 43px;
    width: 565px;
}

.part4-2 {
    left: 385px;
    top: 120px;
    width: 128px;
    z-index: 2;
}

.part4-3 {
    left: 414px;
    top: 314px;
    width: 107px;
    z-index: 2;
}

/* Part 5 images */
.part5-1 {
    right: 0;
    top: 43px;
    width: 565px;
}

.part5-2 {
    right: -30px;
    top: 222px;
    width: 643px;
    z-index: 2;
}

.part5-3 {
    right: -21px;
    top: 138px;
    width: 260px;
    z-index: 2;
}

/* Advantage Section */
.advantage-section {
    background-color: #eff3f8;
}

.advantage-grid {
    display: flex;
    flex-wrap: wrap;
}
.advantage-grid .advantage-card {
    width: calc(25% - 18px);
    margin-right: 24px;
}
.advantage-grid .advantage-card:last-child {
    margin-right: 0;
}

.advantage-card {
    padding: 22px 25px;
    background: #fff;
    border: 1px solid #f3f4f6;
    border-radius: 8px;
    box-shadow: 0px 8px 10px 0px rgba(220, 231, 246, 0.45);
}

.advantage-header {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
    font-size: 20px;
    font-weight: bold;
    color: #020202;
}

.advantage-header img {
    width: 44px;
    height: 44px;
    margin-right: 18px;
}

.advantage-desc {
    font-size: 14px;
    color: #858586;
    line-height: 20px;
    margin: 0;
}

.center-btn {
    display: flex;
    justify-content: center;
    margin-top: 50px;
}

/* Footer Banner */
.footer-banner {
    height: 200px;
    background: url('/home/footer-bg.jpg') no-repeat center;
    background-size: cover;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 38px 0;
}

.footer-title {
    font-size: 32px;
    color: #020202;
    line-height: 45px;
    margin: 0 0 10px;
}

.footer-desc {
    font-size: 18px;
    color: #858586;
    line-height: 25px;
    margin: 0 0 13px;
}

.footer-banner .btn-group {
    display: flex;
}
.footer-banner .btn-group > * + * {
    margin-left: 18px;
}

/* Footer */
.landing-footer {
    background: #1a1a2e;
    padding: 40px 0;
}

.footer-container {
    width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-left {
    color: #fff;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}
.footer-logo > * + * {
    margin-left: 10px;
}

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

.footer-logo span {
    font-size: 20px;
    font-weight: bold;
}

.footer-copyright {
    font-size: 14px;
    color: #b9b9b9;
    margin-bottom: 12px;
}

.footer-icp {
    display: flex;
    align-items: center;
    font-size: 14px;
}
.footer-icp > * + * {
    margin-left: 6px;
}

.footer-icp .police-icon {
    width: 16px;
    height: 18px;
}

.footer-icp a {
    color: #b9b9b9;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-icp a:hover {
    color: #fff;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.footer-right > * + * {
    margin-top: 10px;
}

.footer-right .qrcode {
    width: 100px;
    height: 100px;
    border-radius: 4px;
    background: #e5e5e5;
}

.footer-right span {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* Floating Toolbar */
.floating-toolbar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0px 0px 12px 0px rgba(174, 218, 255, 0.34);
    padding: 16px 12px;
    align-items: center;
}
.floating-toolbar > * + * {
    margin-top: 10px;
}

.toolbar-qrcode-section {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.toolbar-qrcode-section > * + * {
    margin-top: 8px;
}

.toolbar-qrcode-img {
    width: 160px;
    height: 160px;
    border-radius: 4px;
}

.toolbar-demo-link {
    display: flex;
    align-items: center;
    color: #3171ff;
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
}
.toolbar-demo-link svg {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    margin-right: 6px;
}
.toolbar-wechat-text {
    color: #818181;
    font-size: 14px;
}
.floating-back-top {
    position: fixed;
    right: 20px;
    bottom: 40px;
    z-index: 100;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0px 0px 12px 0px rgba(174, 218, 255, 0.34);
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: none;
    transition: opacity 0.3s, background 0.3s;
}

.floating-back-top svg {
    width: 28px;
    height: 28px;
    color: #3171ff;
}

.floating-back-top.visible {
    display: flex;
    pointer-events: auto;
}

.floating-back-top:hover {
    background: #e0f1ff;
}


/* FadeUp Animation */
.fade-up-wrapper {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-up-wrapper.visible {
    opacity: 1;
    transform: translateY(0);
}