/* =========================================================
   shell.css｜全站統一外框：Header、Footer、頁面標題
   由 header.html 自動載入，所有頁面（含舊單元）都會套用；
   新版頁面也可在 <head> 直接連結，避免載入時閃爍。
   視覺語言與 digi05–07 單元講義一致：深墨色＋網點、圓體標題、等寬小標。
   ========================================================= */
@import url("https://fonts.googleapis.com/css2?family=Chiron+GoRound+TC:wght@500;700;900&family=Noto+Sans+TC:wght@400;500;700&family=JetBrains+Mono:wght@500;700;800&display=swap");

:root {
	--s-ink: #141311;
	--s-ink-2: #1F1E1B;
	--s-line: rgba(255,255,255,.1);
	--s-text: #F4F1EB;
	--s-mute: #A8A39A;
	--s-font: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
	--s-display: "Chiron GoRound TC", "Noto Sans TC", "PingFang TC", sans-serif;
	--s-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
	/* 課程漸層：串起 05 陶土橘、06 電光紫、07 青綠三個單元色 */
	--s-grad: linear-gradient(120deg, #D97757 0%, #8B6CFF 52%, #22C1B6 100%);
	/* 各單元識別色 */
	--u1: #3A6EA5; --u2: #B5446E; --u3: #C9821A; --u4: #2F7D62; --u5: #C96442;
	--u6: #6D4AFF; --u7: #0E9F9A; --u8: #D6336C; --u9: #5B6472;
	--hdr-h: 68px;
}

/* ---------- Header ---------- */
#header.header {
	--background-color: rgba(20,19,17,.9);
	height: var(--hdr-h);
	padding: 0;
	background: rgba(20,19,17,.9);
	backdrop-filter: blur(14px) saturate(140%);
	-webkit-backdrop-filter: blur(14px) saturate(140%);
	border-bottom: 1px solid var(--s-line);
	box-shadow: none;
	font-family: var(--s-font);
}
#header.header::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--s-grad); opacity: .85; }
.scrolled #header.header { --background-color: rgba(20,19,17,.96); background: rgba(20,19,17,.96); box-shadow: 0 10px 30px -18px rgba(0,0,0,.8); }
#header .container-xl { max-width: 1240px; padding: 0 24px; height: 100%; }
#header .logo { gap: 11px; line-height: 1.1; text-decoration: none; }
#header .logo .mark { flex: 0 0 38px; width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center; background: var(--s-grad); color: #fff; font: 900 18px/1 var(--s-display); box-shadow: 0 6px 16px -8px rgba(139,108,255,.8); }
#header .logo .txt { display: flex; flex-direction: column; }
#header .logo .sitename { font: 900 18px/1.15 var(--s-display); color: var(--s-text); margin: 0; letter-spacing: .02em; }
#header .logo small { font: 700 9.5px/1.3 var(--s-mono); letter-spacing: .16em; color: var(--s-mute); text-transform: uppercase; margin-top: 2px; }

@media (min-width: 1200px) {
	#header .navmenu > ul { gap: 2px; }
	#header .navmenu > ul > li > a, #header .navmenu > ul > li > a:focus {
		position: relative; color: #CFCAC1; font: 700 14.5px/1 var(--s-font); padding: 24px 13px; letter-spacing: .02em;
	}
	#header .navmenu > ul > li > a::after { content: ""; position: absolute; left: 13px; right: 13px; bottom: 15px; height: 2px; border-radius: 2px; background: var(--s-grad); transform: scaleX(0); transform-origin: left; transition: transform .3s cubic-bezier(.2,.8,.2,1); }
	#header .navmenu > ul > li:hover > a, #header .navmenu > ul > li > a.active { color: #fff; }
	#header .navmenu > ul > li:hover > a::after, #header .navmenu > ul > li > a.active::after { transform: scaleX(1); }
	#header .navmenu li:last-child > a { padding-right: 13px; }
	/* 課程單元：大型下拉選單 */
	/* 以 header 容器為定位基準，靠右對齊，避免超出視窗 */
	#header .navmenu li.dropdown.units { position: static; }
	#header .navmenu .dropdown.units > ul {
		left: auto; right: 24px; transform: none; width: 720px; padding: 14px; border-radius: 18px;
		display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
		background: #fff; border: 1px solid #ECE4D8; box-shadow: 0 30px 60px -24px rgba(20,19,17,.45);
	}
	#header .navmenu .dropdown.units > ul > li { min-width: 0; }
	#header .navmenu .dropdown.units > ul > li.mega-head { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: baseline; padding: 2px 8px 8px; border-bottom: 1px solid #F0EBE3; margin-bottom: 4px; }
	#header .navmenu .dropdown.units > ul > li.mega-head b { font: 900 15px var(--s-display); color: #1F1E1B; }
	#header .navmenu .dropdown.units > ul > li.mega-head a { padding: 0; font: 700 12px var(--s-font); color: #9E4A2E; display: inline; }
}
#header .navmenu .dropdown.units .u { display: flex !important; align-items: center; justify-content: flex-start !important; gap: 10px; padding: 9px 10px !important; border-radius: 11px; white-space: normal !important; color: #1F1E1B !important; font-family: var(--s-font) !important; transition: background .2s; }
#header .navmenu .dropdown.units .u:hover { background: #F7F4EF; }
#header .navmenu .dropdown.units .u .no { flex: 0 0 30px; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: #fff; font: 800 12px/1 var(--s-mono); background: var(--c, #1F1E1B); }
#header .navmenu .dropdown.units .u .tt { flex: 1; min-width: 0; display: flex; flex-direction: column; font-size: 13.5px; font-weight: 700; line-height: 1.35; }
#header .navmenu .dropdown.units .u .tt small { font: 600 10.5px/1.4 var(--s-mono); color: #8A857C; letter-spacing: .02em; }
#header .navmenu .dropdown.units .u .st { flex: 0 0 auto; font-size: 10.5px; font-weight: 800; border-radius: 99px; padding: 2px 8px; background: #EEF8F2; color: #2B8A5E; }
#header .navmenu .dropdown.units .u .st.soon { background: #F3EFE8; color: #8A857C; }
#header .navmenu .dropdown.units .u.exam .no { background: #1F1E1B; font-size: 10px; }

@media (max-width: 1199px) {
	#header .mobile-nav-toggle { color: #E8E3DA; margin-right: 0; font-size: 28px; }
	.mobile-nav-active #header .mobile-nav-toggle { color: #fff; top: 18px; right: 18px; }
	/* backdrop-filter 會讓 position:fixed 的手機選單被限制在 header 內，開啟選單時先關掉 */
	.mobile-nav-active #header.header { backdrop-filter: none; -webkit-backdrop-filter: none; background: #141311; }
	.mobile-nav-active .navmenu { background: rgba(14,13,12,.8) !important; }
	#header .navmenu > ul { inset: 72px 14px 14px 14px; border-radius: 18px; padding: 10px; }
	#header .navmenu a, #header .navmenu a:focus { font-family: var(--s-font); font-size: 16px; color: #1F1E1B; padding: 12px 14px; border-radius: 10px; }
	#header .navmenu .dropdown.units > ul { margin: 4px 0 8px; padding: 6px; border-radius: 14px; border: 1px solid #ECE4D8; background: #FCFAF7; }
	#header .navmenu .dropdown.units > ul > li.mega-head { display: none; }
	#header .navmenu .dropdown.units .u .tt { font-size: 13.5px; }
	#header .navmenu a i.toggle-dropdown { background: #F3EFE8 !important; color: #1F1E1B !important; }
}

/* ---------- 頁面標題（各單元頁頂） ---------- */
.page-title.dark-background {
	background: radial-gradient(circle at 85% 0%, rgba(139,108,255,.32), transparent 42%), radial-gradient(circle at 10% 100%, rgba(217,119,87,.28), transparent 45%), var(--s-ink) !important;
	padding: calc(var(--hdr-h) + 46px) 0 44px !important;
	text-align: left;
	overflow: hidden;
}
.page-title.dark-background::before { background: radial-gradient(rgba(255,255,255,.09) 1px, transparent 1.2px) 0 0 / 22px 22px !important; }
.page-title.dark-background .container { max-width: 1240px; padding: 0 24px; }
.page-title.dark-background h1 { font: 900 clamp(24px, 3.2vw, 34px)/1.25 var(--s-display); color: #fff; margin: 0 0 12px; }
.page-title.dark-background .breadcrumbs ol { justify-content: flex-start; font: 600 13px var(--s-font); color: var(--s-mute); }
.page-title.dark-background .breadcrumbs a { color: #E8E3DA; }
.page-title.dark-background .breadcrumbs a:hover { color: #fff; }
.page-title.dark-background .breadcrumbs .current { color: #F2B28F; }

/* ---------- Footer ---------- */
#footer.footer { background: var(--s-ink) !important; color: var(--s-mute); font-family: var(--s-font); padding: 0; position: relative; text-align: left; font-size: 14px; }
#footer.footer p { background: transparent; }
#footer.footer::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--s-grad); }
#footer .f-wrap { max-width: 1240px; margin: 0 auto; padding: 56px 24px 0; display: grid; grid-template-columns: 1.4fr 1.2fr .8fr 1fr; gap: 36px; }
#footer .f-brand .logo { display: flex; align-items: center; gap: 11px; text-decoration: none; }
#footer .f-brand .mark { flex: 0 0 42px; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--s-grad); color: #fff; font: 900 20px/1 var(--s-display); }
#footer .f-brand b { display: block; font: 900 19px/1.2 var(--s-display); color: var(--s-text); }
#footer .f-brand small { display: block; font: 700 9.5px/1.3 var(--s-mono); letter-spacing: .16em; color: var(--s-mute); text-transform: uppercase; margin-top: 2px; }
#footer .f-brand p { font-size: 13.5px; line-height: 1.85; color: var(--s-mute); margin: 16px 0 0; max-width: 30em; }
#footer h4 { font: 800 11px var(--s-mono); letter-spacing: .16em; text-transform: uppercase; color: #fff; margin: 4px 0 14px; }
#footer ul { list-style: none; margin: 0; padding: 0; }
#footer li + li { margin-top: 8px; }
#footer ul a { display: inline-flex; align-items: baseline; gap: 8px; font-size: 13.5px; color: #CFCAC1; text-decoration: none; transition: color .2s; }
#footer ul a:hover { color: #fff; }
#footer ul a .no { font: 800 11px var(--s-mono); color: var(--s-mute); }
#footer .f-units { columns: 2; column-gap: 20px; }
#footer .f-units li { break-inside: avoid; }
#footer .f-units li + li { margin-top: 0; }
#footer .f-units li { margin-bottom: 8px; }
#footer .f-contact p { font-size: 13.5px; line-height: 1.85; margin: 0 0 6px; color: #CFCAC1; }
#footer .f-contact a { color: #CFCAC1; text-decoration: none; }
#footer .f-contact a:hover { color: #fff; }
#footer .f-contact i { color: #F2B28F; margin-right: 6px; }
#footer .f-counter { display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; font-size: 12.5px; color: var(--s-mute); background: rgba(255,255,255,.05); border: 1px solid var(--s-line); border-radius: 10px; padding: 6px 10px; }
#footer .f-counter img { height: 18px; width: auto; vertical-align: middle; }
#footer .f-bottom { max-width: 1240px; margin: 44px auto 0; padding: 18px 24px 26px; border-top: 1px solid var(--s-line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font-size: 12.5px; color: var(--s-mute); }
#footer .f-bottom a { color: #CFCAC1; text-decoration: none; }
#footer .f-bottom .mono { font-family: var(--s-mono); letter-spacing: .06em; }

@media (max-width: 991px) {
	#footer .f-wrap { grid-template-columns: 1fr 1fr; }
	#footer .f-brand { grid-column: 1 / -1; }
}
@media (max-width: 575px) {
	#header .logo small { display: none; }
	#header .logo .sitename { font-size: 16px; }
	#footer .f-wrap { grid-template-columns: 1fr; gap: 28px; padding-top: 44px; }
	#footer .f-units { columns: 1; }
	#footer .f-bottom { flex-direction: column; }
}

/* ---------- 回到頂端按鈕：統一配色 ---------- */
.scroll-top { background: var(--s-ink-2) !important; border: 1px solid rgba(255,255,255,.15); border-radius: 12px !important; }
.scroll-top:hover { background: #000 !important; }