header {
    width: 100%;
    height: var(--header_height);
    position: fixed;
    top: 0;
    right: 0;
    z-index: 1000;
    transition: all ease 0.3s;
    transform: translateY(0);
}
header nav * {
    color: var(--color_ci);
}
header nav > * {
    padding: 0.2rem 1rem;
    color: var(--color_font) !important;
}
.scroll_down header {
    transform: translateY(-110%);
}
@keyframes shake {
    0% {
        transform: scale(1);
    }
    40% {
        transform: scale(1.08);
    }
    60% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}
@keyframes jelly {
    0% {
        transform: scale(1);
        opacity: 0;
    }
    30% {
        transform: scale(1.1);
        opacity: 1;
    } /* 第一次大跳 */
    55% {
        transform: scale(0.92);
    } /* 回縮 */
    75% {
        transform: scale(1.05);
    } /* 第二次小跳 */
    90% {
        transform: scale(0.97);
    } /* 微回縮 */
    100% {
        transform: scale(1);
    } /* 穩定結束 */
}
header nav a.isActive {
    background-color: var(--color_ci);
    color: #ffffff !important;
    border-radius: 1000px;
    /* animation: shake 0.5s cubic-bezier(0.25, 1.25, 0.5, 1) forwards; */
    animation: jelly 0.6s cubic-bezier(0.33, 1, 0.68, 1) forwards;
}

footer {
    font-size: 14px;
    background-color: #bdb6af;
    letter-spacing: 0.1em;
}

aside {
    position: fixed;
    z-index: 100;
    bottom: 3vw;
    right: 1vw;
    transform: translateX(0);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.scroll_down aside {
    transform: translateX(calc(110% + 3vw));
}

/* 開啟 手機選單 按鈕 */
.btn_open_menu_sm {
    width: calc(var(--header_height) - 10px);
    height: calc(var(--header_height) - 10px);
    border: 0;
    position: relative;
    border-radius: 50%;
    margin-right: 1vw;
    backdrop-filter: var(--drop-shadow);
    background-color: rgba(255, 255, 255, 0.7);
    filter: var(--filter_drop_shadow);
}
.show_menu_sm .btn_open_menu_sm {
    filter: none;
    background-color: transparent;
}

.btn_open_menu_sm hr {
    display: block;
    width: 45%;
    height: 2px;
    background-color: var(--color_ci);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s;
    margin: 0;
    opacity: 1;
    padding: 0;
}

.btn_open_menu_sm hr:nth-of-type(1) {
    top: calc(50% - 15%);
}

.btn_open_menu_sm hr:nth-of-type(3) {
    top: calc(50% + 15%);
}

.show_menu_sm .btn_open_menu_sm hr {
    top: 50%;
}

.show_menu_sm .btn_open_menu_sm hr:nth-of-type(1),
.show_menu_sm .btn_open_menu_sm hr:nth-of-type(2) {
    transform: translate(-50%, -50%) rotate(calc(360deg + 45deg));
}

.show_menu_sm .btn_open_menu_sm hr:nth-of-type(3) {
    transform: translate(-50%, -50%) rotate(calc(360deg + 135deg));
}

/* 手機選單 內容 */
#menu_sm {
    position: fixed;
    z-index: 1000;
    top: var(--header_height);
    left: 0;
    width: 100vw;
    height: calc(clamp(100svh, 100dvh, 100lvh) - var(--header_height));
    /* (解決手機版瀏覽器下方選單阻擋) */
    overflow: auto;
    transform: translateX(-101%);
    transition: all 0.3s;
    background-color: #ffffff;
    letter-spacing: 0.1em;
}

.show_menu_sm #menu_sm {
    transform: translateX(0);
}

body.show_menu_sm {
    overflow: hidden !important;
    position: fixed !important;
    /* 手機選單顯示時，禁止背景捲動 */
}

.show_menu_sm header,
.show_menu_sm header nav {
    background-color: #ffffff;
    filter: none;
    backdrop-filter: none;
}

#menu_sm a,
#menu_sm button {
    border-radius: 100rem;
    border: var(--color_ci) 1px solid;
    display: inline-flex;
    width: auto;
    padding: 0.25rem 1rem;
    margin: 0.5rem 2px;
    color: var(--color_font);
}

#menu_sm mark {
    background-color: transparent;
    border-bottom: var(--color_ci) 1px solid;
    color: var(--color_ci);
}

.blog_content img {
    display: inline-block;
    width: 100%;
    margin: 0 auto 0.5rem;
}
.blog_content .w-50 + .w-50 {
    margin-right: 0;
}
.blog_content h1 {
    font-size: calc(1.1rem + 1vw) !important;
}
.blog_content h2 {
    font-size: calc(1.1rem + 0.75vw) !important;
}
.blog_content ul {
    list-style: none;
    padding-left: 0;
}
.blog_content li {
    margin-bottom: 1.25rem;
}
.blog_content p {
    margin-bottom: 2rem;
}

.pinned_link a > *:last-child::after {
    content: '▶';
    font-size: 0.9em;
    margin-left: 0.75rem;
}

.list_hashtag li {
    list-style: none;
    display: inline-block;
    margin-right: 0.5rem;
}

.list_hashtag li::before {
    content: '#';
}