html,
body,
.container {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

:root {
    --sidebar-width: 260px;
    --sidebar-bg: #fffbe6;

    --antd-color-10: #613400;
    --antd-color-9: #874d00;
    --antd-color-8: #ad6800;
    --antd-color-7: #d48806;
    --antd-color-6: #faad14;
    --antd-color-5: #ffc53d;
    --antd-color-4: #ffd666;
    --antd-color-3: #ffe58f;
    --antd-color-2: #fff1b8;
    --antd-color-1: #fffbe6;

    --sidebar-text-dark: #2f4f4f;
    --sidebar-text-light: #f8fff8;

    --sidebar-grade-color: #faad14;
    --sidebar-grade-hover: #d48806;

    --sidebar-chapter-color: #ffc53d;
    --sidebar-chapter-hover: #faad14;

    --sidebar-section-color: #ffe58f;
    --sidebar-hover-bg: #ffe58f;
    --sidebar-active-bg: #ffe58f;

    --sidebar-transition: all 0.3s ease;
    --sidebar-border-radius: 6px;
    --sidebar-box-shadow: 0 2px 8px rgba(0, 100, 0, 0.1);
}

/* 导航条 start */
.container-header {
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 75px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: rgba(0, 0, 0, 0.1) 0px 2px 10px;
    z-index: 1000;
    padding: 10px 20px;
}

.container-header-logo {
    display: flex;
    align-items: center;
}

.container-header-nav {
    display: flex;
    margin-right: 50px;
}

.container-header-nav>div {
    text-align: center;
    margin-right: 10px;
    color: rgb(0, 0, 0);
    font-weight: 500;
    font-size: 16px;
    text-decoration: none;
    padding: 5px 20px;
    border-radius: 20px;
    transition: 0.3s;
    border: 1px solid transparent;
    cursor: pointer;
}

.barrierFree .container-header-nav>div {
    font-size: 24px;
    padding: 10px 30px;
}

.barrierFree .container-header-nav>div.barrierBtn {
    margin-left: 10px;
    color: var(--antd-color-6);
    font-weight: 700;
}

.container-header-nav>div:hover {
    border: 1px solid #999;
}

.barrierFree .container-header-nav>div.barrierBtn:hover {
    border: 1px solid var(--antd-color-8);
}

.container-header-nav>div.active {
    background-color: transparent;
    color: #000;
    border: 1px solid #000;
}

.barrierFree .container-header-nav>div.barrierBtn.active {
    background-color: transparent;
    color: var(--antd-color-8);
    border: 1px solid var(--antd-color-8);
}

/* 导航条 end */

.container-main {
    width: 100vw;
    height: calc(100vh - 75px);
    background-image: url(../asset/bg.png);
    background-repeat: no-repeat;
    background-size: 100%;
    overflow: hidden;
    display: flex;
    justify-content: space-between;
    margin-top: 75px;
    position: relative;
    /* background-color: #F7F7F5; */
}

/* 侧边栏 start */
.container-main-sidebar {
    width: var(--sidebar-width);
    height: 100%;
    box-sizing: border-box;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text-dark);
    overflow-y: auto;
    transition: var(--sidebar-transition);
    box-shadow: var(--sidebar-box-shadow);
    border-right: 1px solid var(--antd-color-4);
    padding: 15px;
    user-select: none;
}

.container-main-sidebar.hidden {
    transform: translateX(-100%);
}

.container-main .sidebar-circle {
    position: absolute;
    top: calc(50% - 30px);
    left: var(--sidebar-width);
    width: 30px;
    height: 60px;
    background-color: var(--sidebar-grade-color);
    border-radius: 0 30px 30px 0;
    line-height: 58px;
    padding-left: 4px;
    box-sizing: border-box;
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: var(--sidebar-transition);
    z-index: 1;
}

/* 定义滚动条样式 */
.container-main-sidebar::-webkit-scrollbar {
    width: 0px;
}

.container-main-sidebar ul {
    padding: 0;
    margin: 0;
}

/* 目录列表样式 */
.container-main-sidebar .directory-list {
    list-style: none;
}

.barrierFree .directory-list>.type-item {
    font-size: 28px;
    text-align: center;
    line-height: 40px;
    font-weight: 700;
}

/* 年级样式 */
.container-main-sidebar .grade-item {
    margin: 8px 0;
    border-radius: var(--sidebar-border-radius);
    overflow: hidden;
    box-shadow: var(--sidebar-box-shadow);
}

.container-main-sidebar .grade-title {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--sidebar-transition);
    background-color: var(--sidebar-grade-color);
    color: var(--sidebar-text-light);
}

.barrierFree .container-main-sidebar .grade-title {
    font-size: 24px;
    background-color: var(--sidebar-text-light);
    color: var(--sidebar-grade-color);
    display: block;
    text-align: center;
}

.container-main-sidebar .grade-title>span {
    font-size: 16px;
}


.container-main-sidebar .grade-title>span>span {
    font-size: 10px;
}

.container-main-sidebar .grade-title:hover {
    background-color: var(--sidebar-grade-hover);
}

.barrierFree .container-main-sidebar .grade-title:hover {
    background-color: var(--sidebar-grade-color);
    color: var(--sidebar-text-light);
}

.barrierFree .container-main-sidebar .grade-title.active {
    background-color: var(--antd-color-8);
    color: var(--sidebar-text-light);
}

.container-main-sidebar .grade-title::before {
    content: "📚";
    margin-right: 10px;
    font-size: 1.1rem;
}

.barrierFree .directory-list .grade-title::before {
    content: "";
}

/* 章节样式 */
.container-main-sidebar .chapter-list {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: rgba(255, 255, 255, 0.5);
}

.container-main-sidebar .grade-item.active .chapter-list {
    max-height: 1000px;
}

.container-main-sidebar .chapter-item {
    margin: 4px 0;
}

.container-main-sidebar .chapter-title {
    display: flex;
    align-items: center;
    padding: 10px 15px 10px 35px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--sidebar-transition);
    color: var(--sidebar-text-dark);
    background-color: var(--sidebar-chapter-color);
    color: var(--sidebar-text-light);
}

.container-main-sidebar .chapter-title>span {
    font-size: 14px;
}

.container-main-sidebar .chapter-title:hover {
    background-color: var(--sidebar-chapter-hover);
}

.container-main-sidebar .chapter-title::before {
    content: "📖";
    margin-right: 10px;
    font-size: 1rem;
}

/* 小节样式 */
.container-main-sidebar .section-list {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: rgba(255, 255, 255, 0.3);
}

.container-main-sidebar .section-list>div {
    height: 32px;
    line-height: 32px;
    text-align: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--sidebar-chapter-color);
}

.container-main-sidebar .chapter-item.active .section-list {
    max-height: 1000px;
}

.container-main-sidebar .section-item {
    margin: 2px 0;
}

.container-main-sidebar .section-title {
    display: flex;
    align-items: center;
    padding: 8px 15px 8px 55px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--sidebar-transition);
    color: var(--sidebar-text-dark);
    line-height: 20px;
}

.container-main-sidebar .section-title>span {
    margin-right: 8px;
    font-size: 16px;
}

.container-main-sidebar .section-title:hover {
    background-color: var(--sidebar-hover-bg);
}

.container-main-sidebar .section-title.active {
    background-color: var(--sidebar-active-bg);
    font-weight: 500;
}

/* .container-main-sidebar .section-title::before {
    content: "📝";
    margin-right: 10px;
    font-size: 0.9rem;
    color: var(--sidebar-section-color);
} */

/* 箭头图标 */
.container-main-sidebar .arrow {
    margin-left: auto;
    transition: transform 0.3s ease;
    font-size: 0.8rem;
}

.container-main-sidebar .grade-item.active .grade-title .arrow,
.container-main-sidebar .chapter-item.active .chapter-title .arrow {
    transform: rotate(90deg);
}

/* 侧边栏 end */

/* 页面主体 start */
.container-main-course {
    width: calc(100vw - var(--sidebar-width) - 30px);
    height: 100%;
    box-sizing: border-box;
    overflow: hidden;
    padding: 30px 60px 30px 30px;
    position: relative;
}

.barrierFree .container-main-course {
    width: calc(100vw - var(--sidebar-width) - 105px);
    margin-right: 100px;
}

/* 课程内容 start */
.container-main .course-box {
    width: 100%;
    height: 100%;
    padding: 5px;
    box-sizing: border-box;

    border-radius: 20px;
    cursor: pointer;

    filter: contrast(1.1);

    &::before,
    &::after {
        content: "";
        position: absolute;
        top: -10px;
        left: -10px;
        right: -10px;
        bottom: -10px;
        border: 4px solid var(--sidebar-grade-color);
        transition: all 8s;
        animation: boxBorderClippath 16s infinite linear;
        border-radius: 10px;
    }

    &::after {
        animation: boxBorderClippath 16s infinite -8s linear;
    }
}

@keyframes boxBorderClippath {

    0%,
    100% {
        clip-path: inset(0 0 98% 0);
    }

    25% {
        clip-path: inset(0 98% 0 0);
    }

    50% {
        clip-path: inset(98% 0 0 0);
    }

    75% {
        clip-path: inset(0 0 0 98%);
    }
}

/* 课程内容 end */

/* 课程内容 视频播放器 start */
.course-box .box-video {
    width: 100%;
    height: 100%;
}

.course-box .box-video>video {
    width: 100%;
    height: 100%;
}

/* 课程内容 视频播放器 end */

/* 课程内容 游戏 start */
.course-box .box-play {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
}

.course-box .box-play>iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* 课程内容 游戏 end */

/* 按钮容器 start */
.course-box .box-btn {
    width: 80%;
    /* 确保宽度足够以居中问题 */
    height: 100%;
    /* 确保高度足够以垂直居中 */
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* 在容器内垂直对齐项目 */
    z-index: 2;
    position: absolute;
    /* 相对于.detail定位 */
    top: -75px;
    /* 定位在.detail的顶部 */
    left: 10%;
    /* 定位在.detail的左侧 */
    pointer-events: none;
    /* 允许点击穿透 */
}

.course-box .box-btn>.box-btn-left,
.course-box .box-btn>.box-btn-right {
    width: 135px;
    height: 135px;
    border-radius: 50%;
    font-size: 22px;
    font-weight: bold;
    border: none;
    cursor: pointer;
    position: absolute;
    /* 相对于.detail定位 */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    pointer-events: auto;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 7;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    line-height: 1.3;
    top: 50%;
    /* 相对于.detail垂直居中 */
    transform: translateY(-50%);
    /* 调整元素高度 */
}

.course-box .box-btn>.box-btn-left {
    left: 40px;
    /* 距离.detail左边缘40px */
    background: linear-gradient(145deg, #87e8de, #13c2c2);
}

.course-box .box-btn>.box-btn-right {
    right: 40px;
    /* 距离.detail右边缘40px */
    background: linear-gradient(145deg, #95de64, #52c41a);
}

.course-box .box-btn>.box-btn-left:hover,
.course-box .box-btn>.box-btn-right:hover {
    transform: translateY(-50%) scale(1.12);
    /* 调整缩放，保持垂直居中 */
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
}

.course-box .box-btn>.box-btn-left:active,
.course-box .box-btn>.box-btn-right:active {
    transform: translateY(-50%) scale(0.9);
    /* 调整缩放，保持垂直居中 */
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

/* 卡通风格的按钮边框 */
.course-box .box-btn>.box-btn-left,
.course-box .box-btn>.box-btn-right {
    border: 8px dashed rgba(255, 255, 255, 0.9);
}

/* 问题框装饰 */
.course-box .box-btn>.box-btn-question {
    min-width: 350px;
    min-height: 20px;
    max-width: 550px;
    padding: 18px 35px;
    font-size: 24px;
    color: #333;
    font-weight: bold;
    background-color: white;
    border-radius: 40px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    text-align: center;
    position: absolute;
    top: -180px;
    /* 调整位置到视频区域顶部 */
    left: 50%;
    transform: translateX(-50%);
    /* 水平居中 */
    z-index: 6;
    border: 4px solid #fadb14;
    pointer-events: auto;
    font-family: 'Comic Sans MS', 'Noto Sans SC', sans-serif;
    animation: boxBtnFloat 4s ease-in-out infinite;
}

@keyframes boxBtnFloat {
    0% {
        transform: translate(-50%, -50%);
    }

    50% {
        transform: translate(-50%, -62%);
    }

    100% {
        transform: translate(-50%, -50%);
    }
}

/* 问题框云朵形状 */
.course-box .box-btn>.box-btn-question {
    background: white;
    border-radius: 40px;
    position: relative;
    /* 为::before和::after定位所需 */
}

/* 给问题框添加可爱的装饰元素 */
.course-box .box-btn>.box-btn-question::before {
    content: '✨';
    position: absolute;
    top: -18px;
    left: 25px;
    font-size: 28px;
    color: #ffde59;
    animation: boxBtnTwinkle 2s infinite alternate;
    text-shadow: 0 0 5px rgba(255, 222, 89, 0.7);
    z-index: 5;
}

.course-box .box-btn>.box-btn-question::after {
    content: '✨';
    position: absolute;
    bottom: -18px;
    right: 25px;
    font-size: 28px;
    color: #ffde59;
    animation: boxBtnTwinkle 2.5s infinite alternate 1s;
    text-shadow: 0 0 5px rgba(255, 222, 89, 0.7);
    z-index: 5;
}

@keyframes boxBtnTwinkle {
    0% {
        opacity: 0.4;
        transform: scale(0.8) rotate(-5deg);
    }

    100% {
        opacity: 1;
        transform: scale(1.3) rotate(5deg);
    }
}

/* 添加彩虹背景效果到问题框 */
.course-box .box-btn>.box-btn-question {
    background: white;
    position: relative;
}

/* 按钮容器 end */

/* 提示语 start */
.course-box .box-notice {
    width: 60vw;
    position: absolute;
    /* 相对于.detail定位 */
    top: 80px;
    /* 调整位置 */
    left: 50%;
    transform: translateX(-50%);
    z-index: 25;
}

.course-box .box-notice-text {
    width: 100%;
    text-align: center;
    font-size: 24px;
    color: #333;
    font-weight: 700;
    background-color: rgba(255, 243, 205, 0.9);
    padding: 15px 25px;
    border-radius: 15px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    border-left: 5px solid #fadb14;
    animation: boxNoticeAppear 0.5s ease-out;
}

@keyframes boxNoticeAppear {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* 提示语 end */

/* 体感交互 start */
.course-box .box-body {
    position: absolute;
    padding: 20px;
    top: 380px;
    /* 垂直居中 */
    left: 50%;
    /* 水平居中 */
    transform: translate(-50%, -50%);
    /* 调整元素大小 */
    background-color: var(--antd-color-2);
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.barrierFree .course-box .box-body {
    top: 80%;
    background-color: var(--antd-color-1);
    opacity: 0.5;
}

.course-box .box-body>#bodyConnectionStatus {
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
    color: #FF5555;
    background-color: #F7F7F5;
    border-radius: 10px;
    margin-bottom: 10px;
    font-weight: 700;
}

.barrierFree .course-box .box-body>#bodyConnectionStatus {
    display: none;
}

.course-box .box-body>#bodyHandStatus {
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(145deg, var(--antd-color-4), var(--antd-color-6));
    border-radius: 10px;
    margin: 10px 0;
}

.barrierFree .course-box .box-body>#bodyHandStatus {
    display: none;
}

.course-box .box-body>#bodyVideoFeed {
    width: 960px;
    height: 560px;
    border-radius: 10px;
    display: block;
    margin: 0 auto;
    border: 3px solid #FFF5F5;
    transform: rotateY(180deg);
}

.barrierFree .course-box .box-body>#bodyVideoFeed {
    width: 300px;
    height: 240px;
}

/* 体感交互 end */

/* 语音识别 start */
.course-box .box-speech {
    position: absolute;
    background-color: var(--antd-color-2);
    padding: 20px 25px;
    border-radius: 15px;
    top: 40%;
    /* 垂直居中 */
    left: 50%;
    /* 水平居中 */
    transform: translate(-50%, -50%);
    /* 调整元素大小 */
    width: 400px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    text-align: center;
}

.barrierFree .course-box .box-speech {
    top: 85%;
    width: 90%;
    background-color: var(--antd-color-1);
    opacity: 0.7;
}

.course-box .box-speech-status {
    background-color: #F7F7F5;
    height: 40px;
    line-height: 40px;
    margin: 10px 0;
    border-radius: 10px;
    font-weight: 700;
    color: var(--antd-color-6);
}

.barrierFree .course-box .box-speech-status {
    display: none;
}

.course-box .box-speech-text {
    background-color: white;
    border: 2px solid #ddd;
    border-radius: 10px;
    padding: 15px;
    min-height: 70px;
    margin: 15px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-height: 400px;
    overflow: hidden;
}

.barrierFree .course-box .box-speech-text {
    background-color: transparent;
}

.course-box .box-speech-button {
    display: flex;
    gap: 15px;
    margin: 15px 0;
}

.barrierFree .course-box .box-speech-button {
    display: none;
}

.course-box .speech-action-button {
    padding: 12px 15px;
    background: linear-gradient(145deg, var(--antd-color-4), var(--antd-color-6));
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    flex: 1;
    transition: all 0.3s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.course-box .speech-action-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.course-box .speech-action-button:disabled {
    background: #aaa;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.course-box .box-speech-partial {
    color: #666;
    font-style: italic;
    min-height: 24px;
}

.barrierFree .course-box .box-speech-partial {
    color: var(--antd-color-10);
    font-size: 32px;
    font-weight: 700;
    min-height: 92px;
}

.course-box .box-speech-final {
    color: #333;
    font-weight: bold;
    min-height: 24px;
    margin-top: 10px;
}

.course-box #commandStatus {
    background-color: var(--antd-color-2);
    color: #000;
}

.course-box .highlight {
    background-color: yellow;
    padding: 2px 5px;
    border-radius: 3px;
}

/* 语音识别 end */

/* 证书 start */
/* 证书区域样式 */
.course-box .box-certificate {
    width: 1000px;
    height: 705px;
    border-radius: 15px;
    cursor: pointer;
    transition: transform 0.3s ease;
    position: absolute;
    /* 相对于.detail定位 */
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-size: contain;
}


.course-box .box-certificate>.box-certificate-name {
    width: 100%;
    margin-top: 310px;
    font-size: 48px;
    font-weight: 700;
    text-align: left;
    padding: 0 90px;
    box-sizing: border-box;
    text-indent: 2em;
    font-family: "楷体";
    color: #333;
}

.course-box .box-certificate>.box-certificate-name>span {
    color: #ff9800;
}


/* 证书 end */

/* 页面主体 end */

/* 操作按钮 start */
.container-main .course-circle {
    position: absolute;
    top: calc(50% - 30px);
    right: 0px;
    width: 30px;
    height: 60px;
    background-color: var(--antd-color-6);
    border-radius: 30px 0 0 30px;
    line-height: 60px;
    padding-left: 4px;
    box-sizing: border-box;
    color: white;
    font-size: 20px;
    cursor: pointer;
    transition: var(--sidebar-transition);
    z-index: 2;
    user-select: none;
}

.container-main .course-operation {
    position: absolute;
    top: calc(50% - 85px);
    right: -85px;
    width: 85px;
    height: 170px;
    background-color: var(--antd-color-3);
    border-radius: 85px 0 0 85px;
    line-height: 85px;
    box-sizing: border-box;
    color: white;
    cursor: pointer;
    transition: var(--sidebar-transition);
    z-index: 1;
    user-select: none;
}

.barrierFree .container-main .course-operation {
    position: absolute;
    top: calc(50% - 160px);
    width: 105px;
    right: 20px;
    background-color: transparent;
}

.container-main .course-operation.show {
    transform: translateX(-100%);
}

.container-main .course-operation>div {
    width: 40px;
    height: 40px;
    border-radius: 30px;
    background-color: var(--antd-color-5);
    text-align: center;
    line-height: 40px;
    position: absolute;
    font-size: 20px;
}

.container-main .course-operation>div:nth-child(1) {
    top: 12px;
    right: 2px;
}

.container-main .course-operation>div:nth-child(2) {
    top: 44px;
    right: 32px;
}

.container-main .course-operation>div:nth-child(3) {
    top: 88px;
    right: 32px;
}

.container-main .course-operation>div:nth-child(4) {
    top: 118px;
    right: 2px;
}

.barrierFree .container-main .course-operation>div {
    width: 80px;
    height: 125px;
    font-size: 36px;
    position: relative;
    padding: 12px;
}

.barrierFree .container-main .course-operation>div>span {
    font-size: 24px;
}

.barrierFree .container-main .course-operation>div:nth-child(1) {
    top: 0px;
    right: 0px;
}

.barrierFree .container-main .course-operation>div:nth-child(1)::after {
    content: '语音识别';
}

.barrierFree .container-main .course-operation>div:nth-child(2) {
    top: 20px;
    right: 0px;
}

.barrierFree .container-main .course-operation>div:nth-child(2)::after {
    content: '体感交互';
}

/* 操作按钮 end */