/* vision.css - 按照首页样式重构 */
/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: #ffffff;
    color: #000000;
    overflow-x: hidden;
}

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

/* 隐藏/显示辅助类 */
.desktop-only {
    display: none;
}

.mobile-only {
    display: block;
}

/* 导航栏 */
.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid #e4e7eb;
    height: 100px;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: height 0.3s ease;
}

.navbar .container {
    padding: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 9px;
}

.logo img {
    width: 69.744px;
    height: 43px;
}

.logo span {
    font-size: 32px;
    font-weight: 500;
    color: #073a7c;
}

.nav-menu {
    display: flex;
    gap: 75px;
    align-items: center;
}

.nav-menu a {
    font-size: 20px;
    font-weight: 350;
    color: #000000;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a.active {
    color: #073a7c;
    font-weight: 400;
    font-size: 23px;
}

.nav-menu a:hover {
    color: #073a7c;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.menu-toggle span {
    width: 24px;
    height: 2.5px;
    background-color: #4a5568;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-dropdown-menu {
    display: none;
    flex-direction: column;
    background-color: #ffffff;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-top: 1px solid #e4e7eb;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.mobile-dropdown-menu.active {
    display: flex;
    max-height: 400px;
    opacity: 1;
}

.mobile-dropdown-menu a {
    padding: 18px 24px;
    font-size: 16px;
    font-weight: 350;
    color: #000000;
    text-decoration: none;
    border-bottom: 1px solid #f0f0f0;
    transition: all 0.3s ease;
}

.mobile-dropdown-menu a:last-child {
    border-bottom: none;
}

.mobile-dropdown-menu a.active {
    color: #073a7c;
    font-weight: 400;
    background-color: #f5f9ff;
}

.mobile-dropdown-menu a:hover {
    color: #073a7c;
    background-color: #f8fafc;
}

/* 标题横幅 */
.hero-banner {
    background: linear-gradient(to left, rgba(69, 212, 238, 0.75), #0252ff);
    height: 200px;
    /* 基础高度 - 桌面端 */
    margin-top: 100px;
    display: flex;
    align-items: flex-end;
    padding-bottom: 60px;
    position: relative;
    max-width: 1200px;
    width: 100%;
    margin: 100px auto 0;
}

.hero-banner .container {
    max-width: 1200px;
    padding: 0 50px;
    color: white;
}

.hero-title {
    font-size: 40px;
    font-weight: 500;
    margin-bottom: 30px;
    /* display: inline-block; */
    text-align: center;
}

.hero-subtitle-big {
    font-size: 20px;
    font-weight: 400;
    color: #E4E7EB;
    text-align: right;
}

.highlight-line {
    box-shadow: 0 0 10px 2px rgba(13, 13, 13, 0.4) !important;
    /* filter: drop-shadow(0 0 8px rgba(26, 27, 28, 0.8)); */
    transition: box-shadow 0.3s ease, filter 0.3s ease;
}

/* 核心价值观部分 */
.values-section {
    padding: 60px 0px;
    position: relative;
}

.section-header {
    margin-bottom: 60px;
    position: relative;
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    color: #073a7c;
    margin-bottom: 10px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 20px;
    font-weight: 300;
    color: #073a7c;
    display: none;
    line-height: 1.2;
}

.section-subtitle-mobile {
    font-size: 15px;
    font-weight: 300;
    color: #073a7c;
    text-align: right;
    margin-top: 5px;
    display: block;
    line-height: 1.2;
}

.section-divider {
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, #073a7c, rgba(0, 102, 255, 0));
    margin-top: 15px;
}

.values-content {
    position: relative;
    padding: 30px 0;
}

/* 价值观圆环布局 */
.values-container {
    position: relative;
    width: 550px;
    height: 550px;
    margin: 0 auto;
}

/* 外层大圆 - 白色背景带阴影边框 */
.outer-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    /* 比内圆大 */
    height: 500px;
    background: white;
    border-radius: 50%;
    border: 1px solid #e4e7eb;
    box-shadow: 0 8px 30px rgba(0, 51, 102, 0.15),
        0 4px 12px rgba(0, 82, 255, 0.1);
    z-index: 1;
}

/* 内层圆形背景 */
.circle-background {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 450px;
    /* 保持原来的400px */
    height: 450px;
    border-radius: 50%;
    background: linear-gradient(to left, rgba(69, 212, 238, 0.75), #0052FF);
    border: 1px solid #0A54F0;
    z-index: 2;
}

/* 扇形分隔线 */
.sector-line {
    position: absolute;
    top: 50.5%;
    left: 73%;
    transform: translate(-50%, -50%);
    width: 250px;
    height: 6px;
    background: white;
    transform-origin: 0 0;
    z-index: 3;
    border: 1px solid #E4E7EB;
}

.line-1 {
    transform: translate(-50%, -50%) rotate(30deg);
}

.line-2 {
    transform: translate(-50%, -50%) rotate(150deg);
}

.line-3 {
    transform: translate(-50%, -50%) rotate(270deg);
}

/* 中心圆 */
.center-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150px;
    height: 150px;
    background: #0D61DF;
    border: 3px solid #0d61df;
    border-radius: 50%;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 25px rgba(13, 97, 223, 0.25);
}


.center-title {
    font-size: 28px;
    font-weight: 500;
    color: #ffffff;
    text-align: center;
    line-height: 1.2;
}

/* 三个扇形区域 - 调整位置适应新布局 */
.sector-area {
    position: absolute;
    width: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    z-index: 5;
    /* 提高到最上层 */
}

/* 扇形1 - 左上角（全球协作） */
.sector-global {
    top: 25%;
    left: 25%;
    transform: translateX(-30%);
}

.sector-global .value-desc {
    margin: 10px 40px 0 0;
}

/* 扇形2 - 右上角（技术驱动） */
.sector-tech {
    top: 25%;
    right: 25%;
    transform: translateX(30%);
}

.sector-tech .value-desc {
    margin: 10px 0 0 50px;
}

/* 扇形3 - 下方（用户为中心） */
.sector-user {
    bottom: 15%;
    left: 50%;
    transform: translateX(-50%);
}

/* 价值项样式 */
.value-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}


.value-title {
    font-size: 30px;
    font-weight: 400;
    color: #003366;
    margin-bottom: 10px;
    line-height: 1.3;
    display: inline-block;
}

.value-desc {
    font-size: 24px;
    font-weight: 400;
    color: #5a6c7d;
    max-width: 180px;
    line-height: 1.5;
}

/* 移动端图片框 */
.values-image-box {
    margin-top: 60px;
    background: #ffffff;
    border: 1px solid #e4e7eb;
    border-radius: 20px;
    padding: 10px;
    max-width: 292px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.25);
}

.image-label {
    font-size: 13px;
    font-weight: 400;
    color: #5a6c7d;
    margin-bottom: 8px;
    text-align: center;
}

.image-placeholder {
    background: linear-gradient(to left, rgba(69, 212, 238, 0.75), #0052ff);
    height: 108px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 13px;
    border-radius: 8px;
}

/* 使命与愿景部分 */
.mission-vision-section {
    padding: 40px 0;
    background: #ffffff;
}

.mission-vision-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.mission-box,
.vision-box {
    background: #ffffff;
    border: 1px solid #e4e7eb;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.25);
}

.box-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 2px solid;
    border-image: linear-gradient(to left, rgba(69, 212, 238, 0.75), #0052ff) 1;
}

.box-title {
    font-size: 32px;
    font-weight: 700;
    color: #073a7c;
    margin-bottom: 5px;
}

.box-subtitle {
    font-size: 20px;
    font-weight: 300;
    color: #073a7c;
}

.box-content {
    padding: 10px;
}

.intro-text {
    font-size: 24px;
    font-weight: 400;
    color: #003366;
    margin-bottom: 30px;
}

.content-list {
    list-style: none;
    margin-bottom: 30px;
}

.content-list li {
    background: #ffffff;
    border: 1px solid #e4e7eb;
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 350;
    color: #5a6c7d;
    box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.25);
    line-height: 1.6;
}

.closing-text {
    font-size: 24px;
    font-weight: 400;
    color: #073a7c;
    text-align: right;
    font-style: italic;
    margin-top: 30px;
}

/* 页脚 */
.footer {
    background-color: #ffffff;
    border-top: 1px solid #e5e7eb;
    padding: 40px 0 40px;
}

.footer-content {
    display: flex;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 9px;
}

.footer-logo img {
    width: 69.744px;
    height: 43px;
}

.footer-logo span {
    font-size: 32px;
    font-weight: 500;
    color: #073a7c;
}

.footer-links {
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    gap: 60px;
    margin-left: 100px;
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-column h5 {
    font-size: 20px;
    font-weight: 500;
    color: #1f2937;
    margin-bottom: 4px;
    letter-spacing: 1px;
}

.footer-column a {
    font-size: 14px;
    font-weight: 350;
    color: #1f2937;
    text-decoration: none;
    letter-spacing: 0.42px;
    line-height: 20px;
}

.footer-column p {
    font-size: 14px;
    font-weight: 350;
    color: #1f2937;
    text-decoration: none;
    letter-spacing: 0.42px;
    line-height: 20px;
}

.footer-column a:hover {
    color: #073a7c;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background-color: #e5e7eb;
    margin: 40px 0 20px;
}

.footer-bottom {
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.footer-bottom p {
    font-size: 14px;
    font-weight: 350;
    color: #0f1419;
    letter-spacing: 0.42px;
}

/* 桌面端展示区（移动端隐藏） */
.values-showcase {
    display: none;
}

/* ========== 响应式设计 - 平板 ========== */
@media screen and (max-width: 1024px) and (min-width: 768px) {
    .container {
        padding: 0 40px;
    }

    .nav-menu {
        gap: 40px;
    }

    .hero-banner {
        height: 300px;
        /* 平板端高度 */
    }

    .section-title {
        font-size: 36px;
    }

    .content-list li {
        font-size: 18px;
        padding: 15px;
    }

    .footer-links {
        gap: 40px;
        margin-left: 60px;
    }
}

/* ========== 响应式设计 - 手机 ========== */
@media screen and (max-width: 767px) {
    .container {
        padding: 0 24px;
    }

    /* 导航栏 */
    .navbar {
        height: 54px;
    }

    .navbar.menu-open {
        height: auto;
        min-height: 54px;
    }

    .logo img {
        margin-left: 20px;
        width: 50px;
        height: 31px;
    }

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

    .desktop-nav {
        display: none;
    }

    .menu-toggle {
        margin-right: 20px;
        display: flex;
    }

    .menu-toggle span {
        background-color: #073a7c;
    }

    /* 标题横幅 */


    .hero-banner {
        height: 150px;
        margin-top: 54px;
        padding-bottom: 30px;
        width: 100%;
        max-width: 100%;
    }

    .hero-banner .container {
        padding: 0 24px;
        width: 100%;
        max-width: 100%;
        /* text-align: center; */
    }

    .hero-title1 {
        font-size: 28px;
        margin-left: 45px;
        padding-bottom: 10px;
    }

    .hero-title2 {
        font-size: 28px;
        margin-bottom: 10px;
        margin-left: 110px;
    }

    .hero-subtitle-small {
        color: white;
        font-size: 28px;
        margin-bottom: 0px;
        margin-left: 170px;
    }

    /* 核心价值观部分 - 等比例缩小圆环 */
    .values-section {
        padding: 40px 0 0 0;
    }

    .section-header {
        margin-bottom: 30px;
    }

    .section-title {
        font-size: 24px;
        text-align: center;
        margin-bottom: 20px;
        color: #333;
    }

    .section-subtitle-mobile {
        display: none;
    }

    .values-content {
        padding: 20px 0;
    }

    /* 等比例缩小圆形容器 */
    .values-container {
        width: 300px;
        /* 从550px缩小到450px */
        height: 300px;
        /* 从550px缩小到300px */
        margin: 0 auto;
    }

    /* 等比例缩小外层大圆 */
    .outer-circle {
        width: 300px;
        /* 从500px缩小到400px */
        height: 300px;
        /* 从500px缩小到400px */
        box-shadow: 0 4px 15px rgba(0, 51, 102, 0.15),
            0 2px 6px rgba(0, 82, 255, 0.1);
    }

    /* 等比例缩小内层圆 */
    .circle-background {
        width: 270px;
        /* 从450px缩小到250px */
        height: 270px;
        /* 从450px缩小到250px */
        border-width: 1px;
        /* 边框也适当缩小 */
    }

    /* 等比例缩小扇形分隔线 */
    .sector-line {
        width: 150px;
        /* 从250px缩小到140px */
        height: 5px;
        /* 从6px缩小到4px */
        top: 50%;
        left: 75%;
    }

    /* 等比例缩小中心圆 */
    .center-circle {
        width: 90px;
        height: 90px;
        border-width: 2px;
        /* 边框缩小 */
        box-shadow: 0 3px 15px rgba(13, 97, 223, 0.2);
    }


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

    .sector-area {
        width: 120px;
    }

    .sector-global {
        top: 20%;
        left: 15%;
        transform: translateX(-30%);
    }

    .sector-global .value-title {
        margin: 0 0 0 49px;
    }

    .sector-tech {
        top: 20%;
        /* 从25%调整到20% */
        right: 15%;
        /* 从25%调整到15% */
        transform: translateX(30%);
    }

    .sector-tech .value-title {
        margin: 0 49px 0 0px;
    }

    .sector-tech .value-desc {
        margin: 5px 0 0 25px;
        /* 缩小边距 */
        font-size: 14px;
        /* 字体缩小 */
    }

    .sector-user {
        bottom: 20%;
        /* 从15%调整到20% */
        left: 50%;
        transform: translateX(-50%);
    }

    /* 价值项样式调整 */
    .value-title {
        font-size: 24px;
        /* 从30px缩小到18px */
        margin-bottom: 12px;
    }

    .value-desc {
        font-size: 14px;
        /* 从24px缩小到14px */
        max-width: 120px;
        /* 从180px缩小到120px */
        line-height: 1.4;
    }

    /* 移动端图片框 */
    .values-image-box {
        margin-top: 40px;
        max-width: 360px;
        padding: 8px;
        min-height: 160px;
    }

    .image-label {
        font-size: 12px;
    }

    .image-placeholder {
        height: 150px;
        font-size: 12px;
    }

    /* 使命与愿景部分 */

    .mission-vision-grid {
        gap: 20px;
    }

    .mission-box,
    .vision-box {
        padding: 20px;
    }

    .box-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }

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

    .box-subtitle {
        font-size: 14px;
    }

    .intro-text {
        font-size: 16px;
        margin-bottom: 15px;
    }

    .content-list li {
        font-size: 14px;
        padding: 15px;
        margin-bottom: 10px;
        border-radius: 10px;
    }

    .closing-text {
        font-size: 16px;
        margin-top: 20px;
    }

    /* 页脚 */
    .footer {
        padding: 30px 0 20px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
        align-items: center;
        text-align: center;
    }

    .footer-logo {
        order: -1;
    }

    .footer-logo img {
        width: 50px;
        height: 31px;
    }

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

    .footer-links {
        flex-direction: column;
        gap: 30px !important;
        width: 100%;
        display: flex;
        align-items: center;
        margin-left: 0 !important;
    }

    .footer-column {
        margin: 0 auto;
        text-align: center;
    }

    .footer-column h5 {
        font-size: 14px;
        margin-bottom: 5px;
    }

    .footer-column a {
        font-size: 13px;
    }

    .footer-divider {
        margin: 30px 0 15px;
    }

    .footer-bottom {
        gap: 8px;
    }

    .footer-column p {
        font-size: 13px;
        font-weight: 350;
    }

    .footer-bottom p {
        font-size: 12px;
    }
}

/* ========== 响应式设计 - 桌面端 (平板以上) ========== */
/* 修改为更精确的媒体查询 */
@media screen and (min-width: 1025px) {

    /* 显示/隐藏切换 */
    .desktop-only {
        display: block;
    }

    .mobile-only {
        display: none;
    }

    /* 标题横幅 - 桌面端保持200px */
    .hero-banner {
        height: 200px;
        /* 桌面端高度保持200px */
        padding-bottom: 60px;
    }

    .hero-title {
        font-size: 48px;
    }



    /* 核心价值观 */
    .values-section {
        padding-top: 60px;
    }


    .section-header {
        display: flex;
        align-items: flex-end;
        justify-content: center;
        gap: 54px;
        margin-bottom: 60px;
    }

    .section-title {
        font-size: 48px;
        margin-bottom: 0;
        line-height: 1;
    }

    .section-subtitle {
        display: block;
        font-size: 20px;
        padding-bottom: 8px;
        line-height: 1;
    }

    .section-subtitle-mobile {
        display: none;
    }

    .section-divider {
        position: absolute;
        bottom: -30px;
        left: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(to right, #073a7c, rgba(0, 102, 255, 0));
        margin-top: 0;
    }

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

    .values-circle {
        width: 500px;
        height: 500px;
    }

    .values-circle::before {
        width: 380px;
        height: 380px;
    }

    .values-circle::after {
        width: 480px;
        height: 480px;
    }

    .center-circle {
        width: 120px;
        height: 120px;
    }

    .center-text {
        font-size: 20px;
    }

    .value-label {
        font-size: 20px;
        padding: 8px 16px;
    }

    /* .value-desc {
        font-size: 18px;
    } */

    /* 桌面端展示区 */
    .values-showcase {
        display: flex;
        flex-direction: column;
        background: linear-gradient(to left, rgba(69, 212, 238, 0.75), #0052ff);
        border: 1px solid #e4e7eb;
        border-radius: 8px;
        position: relative;
        min-height: 333px;
        box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.25);
        overflow: hidden;
    }

    .value_picture {
        width: 100%;
        /* 占满父容器宽度 */
        flex: 1;
        /* 图片区域高度，可调整 */
        background: linear-gradient(to left, rgba(69, 212, 238, 0.75), #0052ff);
        /* 图片背景，可以替换为实际图片 */
        background-size: cover;
        background-position: center;
        /* 如果需要显示占位符文字 */
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: 16px;
    }

    /* 可选：添加占位符文字 */
    .value_picture::after {
        content: var(--after-content);
        content: '图片区域';
        color: rgba(255, 255, 255, 0.8);
        font-size: 16px;
    }

    .white-box {
        height: 75px;
        /* 占据剩余空间 */
        width: 100%;
        display: flex;
        flex-direction: column;
        padding: 20px;
        box-sizing: border-box;
        background: #ffffff;
    }

    .showcase-header {
        background: #ffffff;
        font-size: 18px;
        font-weight: 400;
        color: #000000;
        margin-bottom: 15px;
        border-radius: 4px;
    }

    .showcase-dots {
        display: flex;
        gap: 12px;
        margin-bottom: 15px;
        padding-left: px;
    }

    .dot {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        background: rgba(35, 44, 53, 0.1);
        display: inline-block;
    }

    .dot:first-child {
        background: rgba(35, 44, 53, 0.5);
    }

    .showcase-nav {
        position: absolute;
        bottom: 38px;
        right: 20px;
        display: flex;
        gap: 10px;
    }

    .nav-btn {
        width: 22px;
        height: 18px;
        background: #d9d9d9;
        border: none;
        border-radius: 5px;
        color: #ffffff;
        cursor: pointer;
        font-size: 16px;
        font-weight: 300;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-btn:hover {
        background: #bbb;
    }

    /* 使命与愿景 */

    .mission-vision-grid {
        flex-direction: row;
        gap: 0;
        position: relative;
        box-shadow: 0px 4px 8px 1px rgba(0, 0, 0, 0.25);
        border-radius: 20px;
        overflow: hidden;
    }

    .mission-box,
    .vision-box {
        flex: 1;
        border-radius: 0;
        padding: 60px 40px;
        min-height: 710px;
    }

    .mission-box {
        border-right: 2px solid #0038a9;
    }

    .box-header {
        border-bottom: none;
        margin-bottom: 40px;
    }

    .box-title {
        font-size: 48px;
    }

    .box-subtitle {
        font-size: 28px;
        margin-left: 360px;
        letter-spacing: 1.4px;
    }

    .intro-text {
        font-size: 28px;
        margin-bottom: 40px;
    }

    .content-list {
        margin-bottom: 60px;
    }

    .content-list li {
        border: none;
        box-shadow: none;
        padding: 0;
        margin-bottom: 15px;
        font-size: 24px;
        line-height: 1.6;
        background: transparent;
    }

    .content-list li::before {
        content: '• ';
        color: #5a6c7d;
        font-size: 30px;
        vertical-align: middle;
        margin-right: 10px;
    }

    .closing-text {
        font-size: 24px;
        margin-top: 60px;
    }
}

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