@font-face {
    font-family: 'Noah';
    src: url('../res/Noah/noah-regular-2.otf') format('opentype');
}

@font-face {
    font-family: 'HanaMin';
    src: url('../res/HanaMin/RiBenHuaYuanMingChaoTi-2.ttf') format('truetype');
}

@font-face {
    font-family: 'OPPO Sans 4.0';
    src: url('../res/OPPO_Sans_4.0/OPPO\ Sans\ 4.0.ttf') format('truetype');
}

@font-face {
    font-family: 'Jetbrains Mono';
    src: url('../res/JetBrains\ Mono/JetBrainsMono-Medium.ttf') format('truetype');
}

@font-face {
    font-family: 'Malak';
    src: url('../res/Malak-Regular/Malak-Regular-Demo-2.ttf') format('truetype');
}


* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    /* font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; */
    background-color: #f5f5f5;
}

.float-shadow {
    top: 0;
    left: 0;
    width: 100vw;
    height: 170px;
    position: fixed;
    /* background-color: #00000000; */
    box-shadow: 0px 70px 50px -28px inset #00000063;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 97;
}

/* 悬浮按钮 */
.float-btn {
    /* backdrop-filter: blur(5px); */
    position: fixed;
    top: 0;
    left: 0;
    width: 99vw;
    height: 70px;
    background-color: #5a5a5a00;
    border: none;
    z-index: 98;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, backdrop-filter 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    margin: 0.5vw;
    border-radius: 12px;
    transform: translateY(0);
}

.float-btn.hidden {
    transform: translateY(-100%);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0);
}

.float-btn:hover {
    background-color: #0202022f;
    backdrop-filter: blur(15px);
}

.float-btn-left {
    display: flex;
    align-items: center;
    gap: 20px;
}


.float-btn-title {
    font-family: 'Noah';
    /* font-weight: 100; */
    /* letter-spacing: 0.07em; */
    color: white;
    font-size: 20px;
    min-width: 40px;
}

.float-btn-item {
    background: none;
    border: none;
    color: white;
    font-family: 'OPPO sans 4.0';
    font-weight: 200;
    font-size: 15px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 7px;
    transition: background-color 0.2s ease;
}

.float-btn-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.float-btn-menu {
    position: fixed;
    top: 25px;
    right: 40px;
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    transition: transform 0.3s ease;
    z-index: 99;
}

.float-btn-menu:hover {
    transform: scale(1.1);
}

.float-btn-menu:active {
    transform: scale(0.95);
}

/* 侧边栏 */
.sidebar {
    backdrop-filter: blur(25px);
    position: fixed;
    right: 0;
    top: 0;
    width: 20vw;
    height: 96vh;
    background-color: #1f1f1fc2;
    box-shadow: 0px 10px 50px 5px #00000060;
    display: flex;
    flex-direction: column;
    padding-top: 20px;
    z-index: 100;
    transform: translateX(120%);
    transition: transform 0.42s cubic-bezier(0.43, 0.09, 0.13, 1.02);
    border-radius: 16px;
    margin: 2vh;
}

.sidebar.active {
    transform: translateX(0);
}

.sidebar-btn {
    height: 5.5vh;
    width: 18vw;
    background: none;
    border: none;
    color: white;
    font-family: 'OPPO sans 4.0';
    /* font-weight: 400; */
    font-size: 16px;
    cursor: pointer;
    padding-left: 15px;
    text-align: left;
    transition: background-color 0.2s ease;
    border-radius: 12px;
    margin: 0.3vh 1vw;
}

.sidebar-btn:hover {
    /* color: black; */
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar-title {
    padding-left: 10px;
    font-family: 'OPPO sans 4.0';
    font-weight: 200;
    font-size: 4vh;
    color: white;
    margin: 3vh 0 5vh 1vw;
}

.notices {
    backdrop-filter: blur(25px);
    position: fixed;
    width: 50vw;
    height: 50vh;
    /* left: 0;
    right: 0;
    top: 0;
    bottom: 0; */
    background-color: #1f1f1fc2;
    box-shadow: 0px 10px 50px 5px #00000060;
    display: flex;
    flex-direction: column;
    /* padding-top: 20px; */
    opacity: 0;
    z-index: 100;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    border-radius: 16px;
    margin: 25vh 25vw;
}

.notices.active {
    opacity: 1;
    visibility: visible;
}

.title-notice {
    padding-left: 10px;
    font-family: 'OPPO sans 4.0';
    font-weight: 200;
    font-size: 4vh;
    color: white;
    margin: 5vh 0 5vh 1vw;
}

.notice-btn {
    display: inline-block;
    display: flex;
    /* justify-content: center;  */
    align-items: center; /* 垂直居中 */
    height: 5.5vh;
    width: 48vw;
    background: none;
    border: none;
    color: white;
    font-family: 'OPPO sans 4.0';
    /* font-weight: 400; */
    font-size: 16px;
    cursor: pointer;
    padding-left: 15px;
    text-align: left;
    transition: background-color 0.2s ease;
    border-radius: 12px;
    margin: 0.3vh 1vw;
}
.notice-btn:hover {
    /* color: black; */
    background-color: rgba(255, 255, 255, 0.1);
}

/* 遮罩层 */
.overlay {
    backdrop-filter: blur(7px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 99;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

.overlay2 {
    backdrop-filter: blur(7px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 99;
}

.overlay2.active {
    opacity: 1;
    visibility: visible;
}

/* 主容器和板块 */
.container {
    margin-left: 0;
    transition: margin-left 0.3s ease;
}

.section {
    /* padding: 60px 20px; */
    text-align: center;
}

.section-1 {
    background: url('../res/image/DreamLand.webp') no-repeat top;
    background-size: cover;
    color: white;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0px -150px 120px -28px inset #0000009a;
    left: 0vw;
    width: 75vw;
}

.section-1 h1 {
    font-family: 'JetBrains Mono', monospace, monaco;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    position: absolute;
    left: 18px;
    bottom: 0.5vh;
    font-size: 4vw;
    margin-bottom: 20px;
    z-index: 94;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, backdrop-filter 0.3s ease;
}

.section-1 h1:hover {
    backdrop-filter: blur(10px);
    background-color: #0000001c;
}

.section-1 .toptext {
    font-family: 'JetBrains Mono', monospace, monaco;
    font-weight: 100;
    color: rgba(255, 255, 255, 0.7);
    position: absolute;
    left: 18px;
    bottom: 90px;
    font-size: 1.5vw;
    margin-bottom: 20px;
    z-index: 95;
    border-radius: 8px;
}

.section-1 .toptext:hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, backdrop-filter 0.3s ease;
    backdrop-filter: blur(10px);
    background-color: #0000001c;
}

.section-1 .foot {
    position: absolute;
    bottom: 0.5vh;
    font-size: 15px;
    left: 18px;
    color: #ffffff60;
    background-color: #bebebe21;
    backdrop-filter: blur(12px);
    border-radius: 5px;
}

.main-page {
    display: flex;
    flex-direction: row;
    max-width: 100vw;
    max-height: 100vh;
}

.main-page-left {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 25vw;
}

/* 这里把定位改变关了，整个元素已经把窗口铺满了就不需要再改定位，滥用定位可能会导致子元素的定位出问题，见.text_zh注释 */
.main-page-left .left-top {
    position: relative;
    display: flex;
    /* left: 2vw; */
    top: 0px;
    right: 0px;
    height: 45%;
    width: auto;
    background-color: #b16957;
}

.main-page-left .left-top .text_en {
    position: absolute;
    font-family: 'OPPO Sans 4.0';
    font-weight: 600;
    position: absolute;
    font-size: 10vh;
    line-height: 0.9;
    bottom: 0;
    /* margin: px 0px; */
}

/* 原本你这里写了这个元素的定位是绝对定位，如果父元素没有改定位那这个就会出问题，像这种直接向左置顶的没必要这么写 */
/* 然后这个选择器看你想怎么写了，写这么复杂的话可以有效避免类名重复的问题，缺点就是写起来很麻烦（ */
.main-page-left .left-top .text_zh {
    position: absolute;
    font-family: 'OPPO Sans 4.0';
    font-weight: 600;
    font-size: 7vh;
    line-height: 1.1;
    /* margin: px 0px; */
}

/* 改了改样式书写，这几个就够了 */
.main-page-left .left-bottom {
    display: flex;
    height: 55%;
    width: auto;
    overflow: hidden
}

/* 这里是移动的文字，rotate确实可以转圈，但是两个盒子并列写就会出问题，你可以自己试试就知道了 */
.movebox p {
    text-align: center;
    font-family: 'Jetbrains Mono', monospace, monaco;
    font-weight: 700;
    rotate: 90deg;
    white-space: nowrap;
    font-size: 3.7vw;
}

/* 这个是移动文字的父盒子 */
.movebox {
    display: flex;
    flex-direction: column;
    height: 100%;
    width: 100%;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* 应用动画部分 */
.leftbox-1 p, .leftbox-3 p {
    white-space: nowrap;
    animation: moveup 50s linear infinite;
    animation-delay: -25s;
}
.leftbox-2 p, .leftbox-4 p {
    white-space: nowrap;
    animation: movedown 50s linear infinite;
    animation-delay: -25s;
}

/* 动画部分 */
@keyframes moveup {
    0% {
        transform: translateX(25%);
    }

    100% {
        transform: translateX(-25%);
    }
}

@keyframes movedown {
    0% {
        transform: translateX(-25%);
    }

    100% {
        transform: translateX(25%);
    }
}

/*//////////////////*/

.main-page-left .left-bottom .leftbox-1{
    background-color: #4e898d;
}
.main-page-left .left-bottom .leftbox-2{
    background-color: #cfb077;
}
.main-page-left .left-bottom .leftbox-3{
    background-color: #c4814a;
}
.main-page-left .left-bottom .leftbox-4{    
    background-color: #c25f38;
}

.section-2 {
    position: relative;
    background-color: rgb(51, 51, 51);
    height: 90vh;
}

.section-2 p {
    color: #ffffff;
    position: absolute;
    font-family: 'OPPO sans 4.0';
    font-weight: 200;
    text-align: left;
    bottom: 8vh;
}

.boxtext {
    color: #ffffff;
    font-family: 'HanaMin';
    font-weight: 100;
    position: absolute;
    font-size: 4vw;
    text-align: left;
    bottom: 0;
}
.boxtext2 {
    font-family: 'Malak';
    font-weight: 100;
}

.flex-container {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 100vw;
}

.flex-box {
    flex: 1;
    width: 33.3%;
    height: 90vh;
    /* padding: 40px 20px; */
    background-color: #f8f9fa;
    /* border-radius: 8px; */
    box-shadow: 0 -10vh 50px -28px inset rgba(0, 0, 0, 0.616);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.flex-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 -10vh 50px -28px inset rgba(0, 0, 0, 0.616);
    /* box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15); */
}

.flex-box-1 {
    background: url(../res/image/LetheByUmiSaltYu.webp) no-repeat top;
    opacity: 0.9;
    background-size: cover;
}
.flex-box-2 {
    background: url(../res/image/CocotonCity.webp) no-repeat center;
    background-size: cover;
    opacity: 0.9;
    
}
.flex-box-3 {
    background: url(../res/image/arcaea.webp) no-repeat center top;
    background-size: cover;
    opacity: 0.9;
}

/* .flex-box h2 {
    margin-bottom: 15px;
    color: #333;
} */

.section-3 {
    position: relative;
    background-color: #1b1b1b;
    color: white;
    height: 10vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.section-3 p {
    text-align: center;
    position: absolute;
    font-family: 'OPPO sans 4.0';
    font-size: 1vw;
    font-weight: 100;
    /* left: 0; */
    top: 0;
}

@keyframes scroll-up{
    0% {
        transform: translateY(100%);
    }
    100% {
        transform: translateY(-100%);
    }
}

/* 响应式设计 */
@media (orientation: portrait) {
    .float-btn {
        padding: 0 15px;
    }

    .float-btn-left {
        gap: 10px;
    }

    .float-btn-title {
        font-size: 18px;
    }

    .float-btn-item {
        font-size: 12px;
        padding: 6px 10px;
        display: none;
    }
    .float-btn-menu {
        top: 18px;
    }

    .sidebar {
        width: 60vw;
        /* max-width: 300px; */
    } 

    .sidebar-btn {
        width: 58vw;
    }

    .section-1 {
        width: 100vw;
        height: 100vh;
    }
    
    .section-1 h1 {
        font-size: 8vw;
        bottom: 1vh;
    }

    .section-1 .toptext {
        font-size: 4vw;
        bottom: 8vh;
    }
    .main-page {
        display: flex;
        flex-direction: column;
        /* flex-wrap: wrap; */
        /* justify-content: flex-start;
        align-items: flex-end; */
        max-width: 100vw;
        max-height: 240vh;
    }

    .main-page-left {
        width: 100vw;
        height: 100vh;
    }

    .movebox p {
        font-size: 11vw;
    }

    .section-2 {
        display: flex;
        height: 90vh;
    }

    .section-3 {
        height: 10vh;
    }

    .section-3 p{
        font-size: 1.8vh;
    }
 
    .boxtext {
        font-size: 12vw;
    }
    
    .flex-container {
        flex-direction: column;
        max-height: 90vh;
    }

    .flex-box {
        position: relative;
        flex: 1;
        height: 33.3vh;
        width: 100vw;
        /* padding: 40px 20px; */
        background-color: #f8f9fa;
        box-shadow: 0 -10vh 50px -28px inset rgba(0, 0, 0, 0.616);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
}