body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
}

.about_title {
    padding: 10px
}

.about_subtitle,
.about_description {
    padding-left: 20px;
    padding-right: 20px;
    white-space: pre-line;
}

/* Layout Containers */
.container, .top_container {
    margin: 0 auto;
    padding-left: 15px;
    padding-right: 15px;
    padding-top: none;
    padding-bottom: 2px;
}

header {
    background-color: white;
    color: black;
    text-align: center;
}

/* Title */
.title-with-icon {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 50px;
}

/* 去掉点击或聚焦时的蓝色边框和高亮 */
.title-icon,
.lang-flag,
button,
a {
    outline: none; /* 聚焦时的轮廓线 */
    -webkit-tap-highlight-color: transparent; /* 移动端点击高亮 */
}

.title-icon {
    position: absolute;
    left: 0;
    width: 36px;
    height: 36px;
    object-fit: contain;
    cursor: pointer;
    filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.8)) drop-shadow(0 0 20px rgba(255, 215, 0, 0.5));
}

.title-container {
    display: flex;
    flex-direction: column;
    align-items: start;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.top-bar-title {
    font-size: large;
    font-weight: bold;
}

@keyframes edge-glow {
    0%, 100% {
        filter: drop-shadow(0 0 0px rgba(255, 215, 0, 0));
    }
    50% {
        filter: drop-shadow(0 0 10px rgba(255, 215, 0, 1)) drop-shadow(0 0 20px rgba(255, 215, 0, 0.6));
    }
}

.edge-glow-animation {
    animation: edge-glow 1s ease-in-out 1; /* 闪烁两次，每次0.5秒 */
}

.title-icon:active {
    transform: scale(0.9);
}

/* 遮罩层 */
.lang-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2); /* 半透明遮罩 */
    display: none;
    z-index: 900; /* 确保在页面内容上，但在国旗弹出层下 */
}

/* language */
.map-icon-container {
    position: relative;
    display: inline-block;
}

.title-icon {
    cursor: pointer;
}

.lang-popup {
    position: absolute;
    top: 30px; /* 图标下方 */
    right: 0;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 10px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

.lang-popup.show {
    opacity: 1;
    pointer-events: auto;
}

.lang-flag {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.lang-flag:hover {
    transform: scale(1.2);
}

/* 当前语言光圈 */
.lang-flag.active {
    box-shadow: 0 0 10px 3px gold;
}

/* Menu */
.menu-button {
    margin-left: auto;
    background: transparent;
    border: none;
    color: #016450;
    cursor: pointer;
    width: 2rem;
    height: 2rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.side-menu {
    height: 100%;
    width: 0;
    position: fixed;
    top: 0;
    right: 0;
    background: white;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.3);
    overflow-x: hidden;
    transition: 0.3s;
    z-index: 2000;
    padding-top: 60px;
}

.side-menu a {
    padding: 10px;
    font-size: 18px;
    color: black;
    text-decoration: none;
    display: block;
    transition: 0.2s;
}

.side-menu a:hover {
    background-color: #f0f0f0;
}

.side-menu .close-btn {
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 30px;
    text-decoration: none;
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    z-index: 1500;
}

/* Info Bar */
.information-bar {
    display: flex;
    justify-content: space-between;
    background: white;
    border-radius: 8px;
    margin-top: 10px;
    margin-left: 10px;
    margin-right: 10px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

.info-box {
    padding: 0.5rem;
    display: flex;
    font-size: .8rem;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.info-box .label, .info-box .value {
    color: gray;
}

.split-line {
    color: gray;
    margin: 0 .5rem;
}

.flip {
    transition: transform 0.4s ease-in-out;
    transform-origin: bottom;
}

.flip.animate {
    transform: rotateX(90deg);
}

/* Announcement Bar */
.announcement-bar {
    background: black;
    height: 32px;
    color: white;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.announcement-text {
    white-space: nowrap;
    display: inline-block;
    padding-left: 100%;
    animation: scroll-left 15s linear infinite;
    font-size: 14px;
}

@keyframes scroll-left {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-100%);
    }
}

/* Widget Container */
.widget-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 10px;
    margin: 10px;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 30px;
    padding: 20px;
    color: #666;
    font-size: clamp(14px, 2vw, 20px);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    padding: 0 2rem;
}

.footer-info, .footer-links {
    display: flex;
    flex-direction: column;
    align-items: start;
    padding: 6px
}

.law-container {
    display: flex;
    flex-direction: column;
    align-items: start;
}

.law-text {
    color: gray;
}

/* SPA Pages */
.page {
    display: none;
}

.page.active {
    display: block;
}

/* Back To Top Button */
#backToTopBtn {
    position: fixed;
    bottom: 10px;
    right: 10px;
    z-index: 1000;
    background: white;
    border: 1px solid #ddd;
    border-radius: 50%;
    cursor: pointer;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: opacity 0.3s;
    opacity: 0.8;
    padding: 0;
}

#backToTopBtn .material-icons {
    font-size: 1rem !important;
    line-height: 1.5;
    color: #444;
}