@font-face {
	font-family: "malgun";
	src: url("font/malgun-gothic.ttf") format("truetype");
	unicode-range: U+0020-007F;
	font-display: swap;
}

html {
	font-family: malgun, sans-serif;;
	height: 100%;
}

body {
	overflow-x: hidden;
	min-width: 360px;
	line-height: 1.5;
	height: 100%;
	display: flex;
	flex-direction: column; /* 垂直排列 */
}

@media (orientation: portrait) {
	body {
		overflow-x: auto;
	}
}

header {
	min-width: 360px;
	width: 100%;
	height: 60px;
	position: fixed;
	top: 0;
	left: 0;
	background: rgb(255, 255, 255);
	z-index: 10;
	box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
	display: flex;
	align-items: center;
	padding: 0 20px;
}

@media (orientation: landscape) and (max-width: 800px) {
	header {
		flex-direction: column; /* 主軸改成垂直 */
		height: 110px;
	}	
}

@media (orientation: portrait) {
	header {
		flex-direction: column;
		height: 80px;
	}
}

nav {
	display: flex;
	gap: 16px;
}

a {
	color: inherit; /* 跟父層(li)一樣的顏色 */
	text-decoration: none; /* 移除底線 */
	display: inline-block; /* 可點擊範圍比較好控制 */
	cursor: pointer; /* 滑鼠游標顯示為手指 */
}

#logo {
	height: 100%;
	display: flex; /* 讓裡面的東西用 flex 排版 */
	justify-content: center; /* 水平置中 */
	align-items: center; /* 垂直置中（可選，看需求） */
}

@media (orientation: landscape) and (max-width: 800px) {
	#logo {
		height: 80px;
		flex: 0 0 80px;
	}
}

@media (orientation: portrait) {
	#logo {
		flex: 0 0 auto;
		height: 80px;
	}
}

#main-menu {
	flex: 0 0 62%; /* 只吃剩餘寬度的 62% */
	margin-left: auto; /* 把 nav 推開，避免黏住 logo */
	margin-right: auto; /* 讓 nav 在剩餘寬度中置中 */
	margin-top: auto; /* 在 flex 容器裡推到最下 */
	display: flex;
	justify-content: space-between;
	align-items: center;
	height: 50px; /* 固定高度 */
}

@media (orientation: landscape) and (max-width: 800px) {
	#main-menu {
		height: 30px;
		width: 100%;
		flex: 0 0 30px; /* 嚴格固定高度 */
	}
}

@media (orientation: portrait) {
	#main-menu {
		display: none;
	}
}

.hamburger {
	height: 80px;
	position: fixed;
	left: 30px;
	font-size: 26px;
	background: none;
	border: 0;
	padding: 0;
	cursor: pointer;
	display: none; /* 桌面版隱藏 */
	z-index: 30; /* 確保在選單上層 */
	font-weight: bold;
	color: rgb(40, 40, 40)
}

@media (orientation: portrait) {
	.hamburger {
		display: block;
	}
}

.overlay {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(200, 200, 200, 0.5);
	opacity: 0;
	pointer-events: none; /* 預設不能點 */
	transition: opacity 0.3s ease;
	z-index: 40;
}

.overlay.active {
	opacity: 1;
	pointer-events: auto;
}

.side-menu {
	position: fixed;
	top: 0;
	left: -60%; /* 預設藏起來 */
	width: 60%;
	height: 100%;
	background: rgb(250, 250, 250);
	transition: left 0.3s ease;
	z-index: 50;
	display: flex;
	flex-direction: column;
	color: rgb(80, 80, 80);
	opacity: 0.9;
}

.side-menu.active {
	left: 0; /* 滑出 */
}

#side-ul .has-submenu,
#side-ul .no-submenu {
	width: 100%;
	border-bottom: 2px solid rgb(200, 200, 200);
}

#side-ul .has-submenu .main-btn,
#side-ul .no-submenu .main-btn {
	display: block;
	padding: 15px 20px;
	text-decoration: none;
	font-size: 18px;
	text-align: left; /* 文字靠左 */
	transition: background 0.3s ease;
}

#side-ul .has-submenu .main-btn:hover,
#side-ul .no-submenu .main-btn:hover {
    background: rgb(200, 200, 200);
}

#side-ul .has-submenu > a::after {
	content: " ▽"; /* 預設向下箭頭 */
	float: right;
}

#side-ul .has-submenu.open > a::after {
	content: " ▲"; /* 展開後變成向上箭頭 */
}

#side-ul .has-submenu.open > a {
	background: rgb(200, 200, 200);
}

#side-ul .has-submenu .submenu {
    background: rgb(200, 200, 200);
	height: 0;
    overflow: hidden;
    transition: height 0.3s ease;
	display: block;
}

#side-ul .has-submenu.open .submenu {
	height: var(--submenu-height)
}

#side-ul .has-submenu .submenu li {
	border: 0;
	margin: 0;
    padding: 5px 5px 5px 46px; /* 文字內縮 */
	font-size: 16px;
	transition: color 0.3s ease;
}

#side-ul .has-submenu .submenu li:hover {
    color: rgb(0, 0, 0);
}

#side-ul .has-submenu .submenu a {
	padding: 0;
	position: relative;
	display: inline-block; /* 讓偽元素依文字寬度 */
	font-size: 16px;
	color: inherit;
}

#side-ul .has-submenu .submenu a::after {
    content: "";
    position: absolute;
    left: 50%; /* 從中間開始 */
    bottom: 0; /* 貼齊文字底部 */
    width: 0;
    height: 2px; /* 底線粗細 */
    background: rgb(0, 0, 0); /* 底線顏色 */
    transition: width 0.3s ease, left 0.3s ease;
}

#side-ul .has-submenu .submenu li:hover a::after {
    width: 100%;
    left: 0; /* 展開到整個文字 */
}

#logo a img {
    height: 54px;
    width: auto; /* 保持比例 */
	filter: drop-shadow(1px 1px 1px rgba(0, 0, 0, 0.1));
}

header nav li a {
	font-size: 18px;
	font-weight: bold;
	white-space: nowrap;
	color: rgb(80, 80, 80);
}

#main-menu #main-ul {
	list-style: none;
	display: flex;
	align-items: center;
	width: 100%;
	height: 100%;
}

#main-menu #main-ul .dropdown {
    position: relative;
    flex: 1;
	z-index: 20;
}

#main-menu #main-ul .dropdown::before {
	content: "";
	position: absolute;
	top: 0;
	left: 50%;
	width: 100%;
	height: 100%;
	transform: translateX(-50%) scaleX(0); /* 從中央展開 */
	transform-origin: center;
	transition: transform 0.2s ease, background 0.2s ease;
	z-index: -1;
}

#main-menu #main-ul .dropdown:hover::before {
	background: rgb(220, 220, 220);
	transform: translateX(-50%) scaleX(1); /* 展開到整個按鈕 */
}

#main-menu #main-ul .dropdown .main-btn{
	height: 100%;
	display: block; /* 讓 a 可填滿父元素 */
    text-align: center; /* 文字置中 */
	line-height: 50px;
}

@media (orientation: landscape) and (max-width: 800px) {
	#main-menu #main-ul .dropdown .main-btn{
		line-height: 30px;
	}
}

#main-menu #main-ul .dropdown-menu {
	position: absolute;
	left: 0;
	background: rgba(240, 240, 240, 0.8);
	box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
	padding: 8px 0;
	min-width: 180px;
	z-index: 30;
	border-radius: 2px;
	opacity: 0;
	transition: opacity 0.3s ease, visibility 0.3s ease;
	visibility: hidden;
}

#main-menu #main-ul .dropdown:hover .dropdown-menu {
	opacity: 1;
	visibility: visible;
}

#main-menu #main-ul .dropdown .dropdown-menu li {
	border: 0;
	margin: 0;
    padding: 6px 20px;
	font-size: 16px;
	color: rgb(80, 80, 80);
	transition: color 0.3s ease;
	list-style: none;
}

#main-menu #main-ul .dropdown .dropdown-menu li:hover {
    color: rgb(0, 0, 0);
}

#main-menu #main-ul .dropdown .dropdown-menu li a {
	padding: 0;
	position: relative;
	font-size: 16px;
	color: inherit;
}

#main-menu #main-ul .dropdown .dropdown-menu li a::after {
    content: "";
    position: absolute;
    left: 50%; /* 從中間開始 */
    bottom: 0; /* 貼齊文字底部 */
    width: 0;
    height: 2px; /* 底線粗細 */
    background: rgb(0, 0, 0); /* 底線顏色 */
    transition: width 0.3s ease, left 0.3s ease;
}

#main-menu #main-ul .dropdown .dropdown-menu li:hover a::after {
    width: 100%;
    left: 0; /* 展開到整個文字 */
}

#content {
	width: 100%;
	flex: 1;
}

.fixed-footer {
	background-color: rgb(208, 208, 208);
	width: 100%;
	display: flex;
	justify-content: center;
}

.footer-content {
	background-color: inherit;
	width: 100%;
	aspect-ratio: 800 / 195;
}

@media (orientation: landscape) and (max-width: 800px) {
	.footer-content {
		height: 195px;
	}
}

.page-header {
	width: 100%;
	/*改橫幅後用橫向優先填滿*/
	/*aspect-ratio: 800 / 240;*/
}

/*改橫幅後用橫向優先填滿*/
/*
@media (orientation: landscape) and (max-width: 800px) {
	.page-header {
		height: 240px;
	}
}
*/

.page-header img {
	height: auto; /*改橫幅後用橫向優先填滿*/
	width: 100%; /*改橫幅後用橫向優先填滿*/
	min-width: 100%; /* 保證容器寬度被覆蓋 */
	object-fit: cover; /* 保持比例，必要時裁切 */
	display: block;
}

.content-top-bottom {
	height: 50px;
}