/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
}

.main-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    min-height: 100vh;
}

.menu-links a {
    position: relative;
    color: #FFE083;
    text-decoration: none;
    font-weight: 500;
    font-size: 21px;
    overflow: hidden;
    padding: 5px 12px;
    transition: color 0.3s ease;
    z-index: 1;
}

.menu-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #FFBA19;
    /* 背景滑入的顏色 */
    transform: translateX(-100%);
    transition: transform 0.4s ease;
    border-radius: 3px;
    z-index: -1;
}

.menu-links a:hover::before {
    width: -1%;
    transform: translateX(95%);
}

.menu-links a:hover {
    color: #FF6619;
    font-weight: bold;
}

/* TOP手機板樣式 */
@media (max-width: 768px) {
    .menu-toggle {
        color: #FFE083;
        display: block;
        position: relative;
        margin-left: auto;
        z-index: 1000;
    }

    .menu-links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        flex-direction: column;
        align-items: center;
        padding: 50px 0;
        gap: 12px;
        background-color: rgba(28, 29, 41, 0.8);
        backdrop-filter: blur(8px);
        transform: translateY(-100%);
        opacity: 0;
        transition: transform 0.3s ease, opacity 0.3s ease;
        z-index: 998;
    }

    .menu-links a {
        color: white;
        font-size: 18px;
    }

    .menu-links.show {
        display: flex;
    }
}

/* 返回頂部按鈕 */
.backtop {
    position: fixed;
    right: 20px;
    bottom: 20px;
    width: 104px;
    height: 104px;
    background-image: url("/img/backtop.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    border: none;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

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

@media (hover: hover) and (pointer: fine) {
    .backtop:hover {
        transform: scale(0.95);
    }
}

@media (hover: none),
(max-width: 768px) {
    .backtop {
        width: 56px;
        height: 56px;
    }

    .backtop:active {
        transform: scale(0.85);
    }
}

/* 黃色框框 */
.frame_all {
    width: 80%;
    padding: 1% 5%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 5px solid #D9CAC5;
    border-radius: 15px;
    background-color: #FFFDF0;
}

@media (max-width: 768px) {
    .frame_all {
        width: 100%;
        border: none;
    }

    .frameBG {
        flex-direction: column;
        align-items: center;
    }
}

.container {
    max-width: 4xl;
    margin: auto;
    padding: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: bold;
    color: #3B3E68;
    text-align: center;
    margin-bottom: 2rem;
}

h2 {
    font-size: 1.75rem;
    font-weight: bold;
    color: #5F739C;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

strong {
    font-weight: bold;
}

ul,
ol {
    padding-left: 2rem;
}

li {
    margin-bottom: 0.5rem;
}

.AvectorLOGO {
    height: 100%;
    /* 或給固定尺寸 */
    max-height: 60px;
    /* 自訂，避免放大超出 menu */
    display: block;
    /* 移除底部空隙 */
    object-fit: contain;
    /* 保持比例 */
}

@media (max-width: 768px) {
    .AvectorLOGO {
        max-height: 40px;
    }
}