/* 建築師之路 — 共同筆記
   沿用 case-study.css 的設計代幣（.ar-cs 提供），版面比照歷年考古題。

   注意：Astra 有一條 `button:hover,button:focus{color:#fff}`，
   所以本檔每一個 <button> 的 hover / focus / focus-visible / active
   都必須同時釘死 color、background-color、border-color，缺一就會變白字白底。 */

.ar-nt-doc {
	padding-bottom: 80px;
}

/* ---------- 未登入的說明卡 ---------- */

.ar-nt-gate {
	max-width: 720px;
	margin: 56px auto 0;
	background: var(--ar-surface);
	border: 1px solid var(--ar-line);
	border-radius: var(--ar-r-md);
	padding: 44px 40px;
	text-align: center;
}

.ar-nt-gate__t {
	font-family: var(--ar-serif);
	font-size: 24px;
	font-weight: 700;
	letter-spacing: .04em;
	margin-bottom: 18px;
}

.ar-nt-gate__p {
	color: var(--ar-ink-soft);
	font-size: 16px;
	line-height: 1.95;
	margin-bottom: 14px;
	text-align: left;
}

.ar-nt-gate__act {
	display: flex;
	gap: 12px;
	justify-content: center;
	flex-wrap: wrap;
	margin: 26px 0 18px;
}

.ar-nt-gate__back {
	font-size: 14px;
}

.ar-nt-gate__back a {
	color: var(--ar-ink-soft);
	text-decoration: none;
}

.ar-nt-gate__back a:hover {
	color: var(--ar-ink);
}

/* ---------- 主體 ---------- */

.ar-nt-main {
	padding-top: 44px;
}

.ar-nt-intro {
	background: var(--ar-cream);
	border: 1px solid var(--ar-line-soft);
	border-radius: var(--ar-r-md);
	padding: 22px 26px;
	margin-bottom: 30px;
}

.ar-nt-intro p {
	font-size: 15px;
	line-height: 1.95;
	color: var(--ar-ink-soft);
}

.ar-nt-intro p + p {
	margin-top: 10px;
}

/* ---------- 工具列與跳題 ---------- */

.ar-nt-toolbar {
	position: sticky;
	top: 0;
	z-index: 5;
	background: var(--ar-bg);
	border-bottom: 1px solid var(--ar-line-soft);
	padding: 14px 0 12px;
	margin-bottom: 24px;
}

.ar-nt-tools {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
	margin-bottom: 12px;
}

.ar-nt-tool {
	font-family: var(--ar-sans);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: .04em;
	line-height: 1;
	padding: 9px 16px;
	border-radius: var(--ar-r-pill);
	border: 1.5px solid var(--ar-line);
	background: var(--ar-surface);
	color: var(--ar-ink-soft);
	cursor: pointer;
	transition: border-color .18s ease, background .18s ease, color .18s ease;
}

.ar-nt-tool:hover,
.ar-nt-tool:focus {
	color: var(--ar-ink);
	background: var(--ar-surface);
	border-color: var(--ar-accent);
}

.ar-nt-tool:focus-visible {
	outline: 2px solid var(--ar-accent);
	outline-offset: 2px;
}

.ar-nt-tool.is-on,
.ar-nt-tool.is-on:hover,
.ar-nt-tool.is-on:focus {
	background: var(--ar-ink);
	border-color: var(--ar-ink);
	color: #FFFFFF;
}

.ar-nt-jump {
	display: flex;
	flex-wrap: wrap;
	gap: 4px;
}

.ar-nt-jump__b {
	width: 30px;
	height: 26px;
	display: grid;
	place-items: center;
	font-size: 11.5px;
	font-weight: 700;
	border-radius: 6px;
	border: 1px solid var(--ar-line-soft);
	background: var(--ar-surface);
	color: var(--ar-ink-soft);
	text-decoration: none;
	transition: border-color .16s ease, background .16s ease;
}

.ar-nt-jump__b:hover {
	border-color: var(--ar-accent);
	color: var(--ar-ink);
}

.ar-nt-jump__b.is-fix {
	background: #FFF6E2;
	border-color: #EBD9A8;
	color: #8A6A18;
}

/* ---------- 官方更正公告 ---------- */

.ar-nt-anote {
	background: #FFF9EC;
	border: 1px solid #EBD9A8;
	border-left: 4px solid var(--ar-accent);
	border-radius: var(--ar-r-sm);
	padding: 14px 18px;
	margin-bottom: 26px;
	font-size: 14px;
	line-height: 1.9;
	color: #6B5314;
}

/* ---------- 選擇題卡片 ---------- */

.ar-nt-list {
	display: grid;
	gap: 18px;
}

.ar-nt-q {
	background: var(--ar-surface);
	border: 1px solid var(--ar-line);
	border-radius: var(--ar-r-md);
	padding: 24px 28px 18px;
	scroll-margin-top: 120px;
}

.ar-nt-q[hidden] {
	display: none;
}

.ar-nt-q.is-fix {
	border-color: #EBD9A8;
}

.ar-nt-q__head {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
	margin-bottom: 14px;
}

.ar-nt-q__no {
	min-width: 34px;
	height: 30px;
	padding: 0 9px;
	display: grid;
	place-items: center;
	background: var(--ar-ink);
	color: #FFFFFF;
	font-size: 14px;
	font-weight: 700;
	letter-spacing: .04em;
	border-radius: var(--ar-r-sm);
}

.ar-nt-q__sys,
.ar-nt-q__topic {
	font-size: 12.5px;
	font-weight: 700;
	letter-spacing: .05em;
	padding: 5px 11px;
	border-radius: var(--ar-r-pill);
	background: var(--ar-cream);
	color: var(--ar-ink-soft);
	border: 1px solid var(--ar-line-soft);
}

.ar-nt-q__topic {
	background: transparent;
	font-weight: 500;
	color: var(--ar-muted);
}

.ar-nt-q__ans {
	margin-left: auto;
	font-family: var(--ar-serif);
	font-size: 16px;
	font-weight: 700;
	letter-spacing: .06em;
	color: var(--ar-ink);
	background: var(--ar-accent);
	padding: 5px 14px;
	border-radius: var(--ar-r-pill);
	white-space: nowrap;
}

.ar-nt-q__ans small {
	font-family: var(--ar-sans);
	font-size: 10.5px;
	font-weight: 700;
	letter-spacing: .08em;
	margin-left: 6px;
	opacity: .78;
}

.ar-nt-q__stem {
	font-size: 16.5px;
	line-height: 1.95;
	color: var(--ar-ink);
	margin-bottom: 14px;
}

/* ---------- 選項 ---------- */

.ar-nt-opts {
	display: grid;
	gap: 6px;
	margin-bottom: 18px;
	list-style: none;
}

.ar-nt-opt {
	display: grid;
	grid-template-columns: 26px 1fr;
	gap: 10px;
	align-items: start;
	padding: 8px 12px;
	border-radius: var(--ar-r-sm);
	font-size: 15.5px;
	line-height: 1.8;
	color: var(--ar-ink-soft);
}

.ar-nt-opt__L {
	width: 22px;
	height: 22px;
	display: grid;
	place-items: center;
	border-radius: 50%;
	border: 1.5px solid var(--ar-line);
	font-size: 12px;
	font-weight: 700;
	color: var(--ar-muted);
	margin-top: 3px;
}

.ar-nt-opt.is-right {
	background: #FFF6E2;
	color: var(--ar-ink);
	font-weight: 500;
}

.ar-nt-opt.is-right .ar-nt-opt__L {
	background: var(--ar-accent);
	border-color: var(--ar-accent);
	color: var(--ar-dark);
}

/* ---------- 詳解區 ---------- */

.ar-nt-sol {
	border-top: 1px solid var(--ar-line-soft);
	padding-top: 16px;
}

.ar-nt-q.is-fold .ar-nt-sol {
	display: none;
}

.ar-nt-src,
.ar-nt-exp {
	display: grid;
	grid-template-columns: 58px 1fr;
	gap: 14px;
	align-items: start;
}

.ar-nt-src {
	margin-bottom: 12px;
}

.ar-nt-src__k,
.ar-nt-exp__k {
	font-family: var(--ar-serif);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: .18em;
	text-align: justify;
	text-align-last: justify;
	padding: 5px 8px;
	border-radius: var(--ar-r-sm);
	background: #EEF1F7;
	color: var(--ar-ink-soft);
}

.ar-nt-exp__k {
	background: var(--ar-ink);
	color: #FFFFFF;
}

.ar-nt-src__v {
	font-size: 14.5px;
	line-height: 1.85;
	color: var(--ar-ink-soft);
	padding-top: 4px;
}

.ar-nt-src__sep {
	margin: 0 8px;
	color: var(--ar-line);
}

.ar-nt-exp__v {
	font-size: 15.5px;
	line-height: 1.95;
	color: var(--ar-ink);
}

.ar-nt-exp__v p + p {
	margin-top: 10px;
}

/* ---------- 備註（官方給分公告、考後修法） ---------- */

.ar-nt-amend {
	display: grid;
	grid-template-columns: 58px 1fr;
	gap: 14px;
	align-items: start;
	margin-top: 14px;
}

.ar-nt-amend__k {
	font-family: var(--ar-serif);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: .18em;
	text-align: justify;
	text-align-last: justify;
	padding: 4px 7px;
	border-radius: var(--ar-r-sm);
	background: #FFF6E2;
	border: 1px solid #EBD9A8;
	color: #8A6A18;
}

.ar-nt-amend__v {
	font-size: 14.5px;
	line-height: 1.9;
	color: var(--ar-ink-soft);
	padding-top: 3px;
}

.ar-nt-amend__v p + p {
	margin-top: 8px;
}

/* ---------- 附圖 ---------- */

.ar-nt-fig {
	margin: 14px 0 16px;
}

.ar-nt-fig img {
	max-width: 100%;
	height: auto;
	display: block;
	border: 1px solid var(--ar-line-soft);
	border-radius: var(--ar-r-sm);
	background: #FFFFFF;
}

.ar-nt-fig--q img {
	max-width: 560px;
}

.ar-nt-fig figcaption {
	font-size: 13px;
	line-height: 1.8;
	color: var(--ar-muted);
	margin-top: 8px;
}

/* ---------- 申論題 ---------- */

.ar-nt-esshead {
	margin: 56px 0 24px;
	padding-top: 34px;
	border-top: 2px solid var(--ar-line);
}

.ar-nt-esshead__t {
	font-family: var(--ar-serif);
	font-size: 26px;
	font-weight: 700;
	letter-spacing: .06em;
	margin-bottom: 12px;
}

.ar-nt-esshead__p {
	font-size: 15px;
	line-height: 1.95;
	color: var(--ar-ink-soft);
	max-width: 780px;
}

.ar-nt-esshead__p + .ar-nt-esshead__p {
	margin-top: 8px;
}

.ar-nt-e {
	background: var(--ar-surface);
	border: 1px solid var(--ar-line);
	border-radius: var(--ar-r-md);
	padding: 30px 34px 20px;
	scroll-margin-top: 120px;
}

.ar-nt-e__head {
	display: flex;
	align-items: center;
	gap: 12px;
	flex-wrap: wrap;
	margin-bottom: 16px;
}

.ar-nt-e__no {
	width: 36px;
	height: 36px;
	display: grid;
	place-items: center;
	background: var(--ar-ink);
	color: #FFFFFF;
	font-family: var(--ar-serif);
	font-size: 17px;
	font-weight: 700;
	border-radius: var(--ar-r-sm);
}

.ar-nt-e__mid {
	display: flex;
	align-items: baseline;
	gap: 10px;
	flex-wrap: wrap;
}

.ar-nt-e__topic {
	font-family: var(--ar-serif);
	font-size: 18px;
	font-weight: 700;
	letter-spacing: .04em;
	color: var(--ar-ink);
}

.ar-nt-e__brief {
	font-size: 13.5px;
	color: var(--ar-muted);
}

.ar-nt-e__score {
	margin-left: auto;
	font-size: 13px;
	font-weight: 700;
	letter-spacing: .06em;
	padding: 5px 13px;
	border-radius: var(--ar-r-pill);
	background: var(--ar-accent);
	color: var(--ar-dark);
	white-space: nowrap;
}

.ar-nt-e__stem {
	background: var(--ar-cream);
	border-left: 3px solid var(--ar-accent);
	border-radius: 0 var(--ar-r-sm) var(--ar-r-sm) 0;
	padding: 14px 18px;
	font-size: 15.5px;
	line-height: 1.95;
	color: var(--ar-ink);
	margin-bottom: 20px;
}

.ar-nt-e__body {
	font-size: 16px;
	line-height: 2;
	color: var(--ar-ink);
}

.ar-nt-e__body > p + p,
.ar-nt-e__body > .ar-nt-list + p {
	margin-top: 12px;
}

.ar-nt-h {
	font-family: var(--ar-serif);
	font-size: 17px;
	font-weight: 700;
	letter-spacing: .05em;
	color: var(--ar-ink);
	margin: 22px 0 10px;
}

.ar-nt-e__body .ar-nt-list {
	display: block;
	margin: 10px 0 10px 4px;
	padding-left: 22px;
}

.ar-nt-e__body .ar-nt-list li {
	margin-bottom: 7px;
	line-height: 1.9;
	list-style: inherit;
}

.ar-nt-e__body ul.ar-nt-list {
	list-style: disc;
}

.ar-nt-e__body ol.ar-nt-list {
	list-style: decimal;
}

.ar-nt-tablewrap {
	overflow-x: auto;
	margin: 16px 0;
	border: 1px solid var(--ar-line);
	border-radius: var(--ar-r-sm);
}

.ar-nt-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 14.5px;
	line-height: 1.8;
	min-width: 460px;
}

.ar-nt-table th,
.ar-nt-table td {
	padding: 10px 14px;
	border-bottom: 1px solid var(--ar-line-soft);
	border-right: 1px solid var(--ar-line-soft);
	text-align: left;
	vertical-align: top;
}

.ar-nt-table th {
	background: var(--ar-cream);
	font-weight: 700;
	color: var(--ar-ink);
	white-space: nowrap;
}

.ar-nt-table tr:last-child td {
	border-bottom: 0;
}

.ar-nt-table th:last-child,
.ar-nt-table td:last-child {
	border-right: 0;
}

.ar-nt-quote {
	border-left: 3px solid var(--ar-line);
	padding: 6px 0 6px 16px;
	margin: 14px 0;
	color: var(--ar-ink-soft);
	font-size: 15px;
	line-height: 1.9;
}

.ar-nt-refs {
	margin-top: 22px;
	padding-top: 16px;
	border-top: 1px solid var(--ar-line-soft);
}

.ar-nt-refs__k {
	display: inline-block;
	font-family: var(--ar-serif);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: .12em;
	color: var(--ar-ink-soft);
	margin-bottom: 8px;
}

.ar-nt-refs ul {
	list-style: none;
	display: grid;
	gap: 5px;
}

.ar-nt-refs li {
	font-size: 13.5px;
	line-height: 1.8;
	color: var(--ar-muted);
	padding-left: 14px;
	position: relative;
}

.ar-nt-refs li::before {
	content: "·";
	position: absolute;
	left: 3px;
	color: var(--ar-accent);
	font-weight: 700;
}

/* ---------- 回報與留言 ---------- */

.ar-nt-act {
	display: flex;
	gap: 8px;
	margin-top: 18px;
	padding-top: 14px;
	border-top: 1px dashed var(--ar-line-soft);
}

.ar-nt-btn {
	font-family: var(--ar-sans);
	font-size: 12.5px;
	font-weight: 700;
	letter-spacing: .05em;
	line-height: 1;
	padding: 8px 15px;
	border-radius: var(--ar-r-pill);
	border: 1.5px solid var(--ar-line-soft);
	background: transparent;
	color: var(--ar-muted);
	cursor: pointer;
	transition: border-color .18s ease, color .18s ease, background .18s ease;
}

.ar-nt-btn:hover,
.ar-nt-btn:focus {
	background: var(--ar-cream);
	border-color: var(--ar-line);
	color: var(--ar-ink);
}

.ar-nt-btn:focus-visible {
	outline: 2px solid var(--ar-accent);
	outline-offset: 2px;
}

.ar-nt-btn[aria-expanded="true"],
.ar-nt-btn[aria-expanded="true"]:hover,
.ar-nt-btn[aria-expanded="true"]:focus {
	background: var(--ar-ink);
	border-color: var(--ar-ink);
	color: #FFFFFF;
}

.ar-nt-cnt {
	display: inline-block;
	min-width: 17px;
	padding: 0 4px;
	margin-left: 5px;
	border-radius: var(--ar-r-pill);
	background: var(--ar-accent);
	color: var(--ar-dark);
	font-size: 11px;
	line-height: 17px;
	text-align: center;
}

.ar-nt-panel {
	margin-top: 14px;
	padding: 18px 20px;
	background: var(--ar-cream);
	border: 1px solid var(--ar-line-soft);
	border-radius: var(--ar-r-sm);
}

.ar-nt-panel[hidden] {
	display: none;
}

.ar-nt-panel__t {
	font-size: 14px;
	font-weight: 700;
	color: var(--ar-ink);
	margin-bottom: 10px;
}

.ar-nt-fieldrow {
	display: flex;
	flex-wrap: wrap;
	gap: 6px 14px;
	margin-bottom: 12px;
}

.ar-nt-radio {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	font-size: 13.5px;
	color: var(--ar-ink-soft);
	cursor: pointer;
}

.ar-nt-radio input {
	accent-color: var(--ar-accent);
	margin: 0;
}

.ar-nt-ta {
	width: 100%;
	font-family: var(--ar-sans);
	font-size: 14.5px;
	line-height: 1.8;
	color: var(--ar-ink);
	background: var(--ar-surface);
	border: 1px solid var(--ar-line);
	border-radius: var(--ar-r-sm);
	padding: 11px 13px;
	resize: vertical;
}

.ar-nt-ta:focus {
	outline: 2px solid var(--ar-accent);
	outline-offset: 1px;
	border-color: var(--ar-accent);
}

.ar-nt-panel__act {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-top: 10px;
	flex-wrap: wrap;
}

.ar-nt-send {
	font-family: var(--ar-sans);
	font-size: 13px;
	font-weight: 700;
	letter-spacing: .05em;
	line-height: 1;
	padding: 10px 20px;
	border-radius: var(--ar-r-pill);
	border: 1.5px solid var(--ar-ink);
	background: var(--ar-ink);
	color: #FFFFFF;
	cursor: pointer;
	transition: background .18s ease, border-color .18s ease;
}

.ar-nt-send:hover,
.ar-nt-send:focus {
	background: #24365C;
	border-color: #24365C;
	color: #FFFFFF;
}

.ar-nt-send:focus-visible {
	outline: 2px solid var(--ar-accent);
	outline-offset: 2px;
}

.ar-nt-send[disabled],
.ar-nt-send[disabled]:hover {
	background: var(--ar-muted);
	border-color: var(--ar-muted);
	color: #FFFFFF;
	cursor: default;
}

.ar-nt-msg {
	font-size: 13.5px;
	line-height: 1.7;
	color: var(--ar-ink-soft);
}

.ar-nt-msg.is-bad {
	color: #A3352C;
}

.ar-nt-msg.is-good {
	color: #2F6B3C;
}

/* ---------- 留言串 ---------- */

.ar-nt-talks {
	list-style: none;
	display: grid;
	gap: 12px;
	margin-bottom: 14px;
}

.ar-nt-talks:empty {
	display: none;
}

.ar-nt-talk {
	background: var(--ar-surface);
	border: 1px solid var(--ar-line-soft);
	border-radius: var(--ar-r-sm);
	padding: 12px 15px;
}

.ar-nt-talk__meta {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 6px;
	font-size: 12.5px;
	color: var(--ar-muted);
}

.ar-nt-talk__meta b {
	color: var(--ar-ink);
	font-weight: 700;
}

.ar-nt-del {
	margin-left: auto;
	font-family: var(--ar-sans);
	font-size: 12px;
	line-height: 1;
	padding: 5px 10px;
	border-radius: var(--ar-r-pill);
	border: 1px solid var(--ar-line-soft);
	background: transparent;
	color: var(--ar-muted);
	cursor: pointer;
}

.ar-nt-del:hover,
.ar-nt-del:focus {
	background: #FBECEA;
	border-color: #E5C3BE;
	color: #A3352C;
}

.ar-nt-talk__body {
	font-size: 14.5px;
	line-height: 1.85;
	color: var(--ar-ink);
}

/* ---------- 頁尾 ---------- */

.ar-nt-foot {
	margin-top: 46px;
}

/* ---------- RWD ---------- */

@media (max-width: 900px) {
	.ar-nt-q,
	.ar-nt-e {
		padding: 20px 20px 16px;
	}

	.ar-nt-src,
	.ar-nt-exp,
	.ar-nt-amend {
		grid-template-columns: 1fr;
		gap: 8px;
	}

	.ar-nt-src__k,
	.ar-nt-exp__k,
	.ar-nt-amend__k {
		justify-self: start;
		letter-spacing: .12em;
		text-align-last: auto;
		padding: 4px 12px;
	}

	.ar-nt-q__ans {
		margin-left: 0;
	}

	.ar-nt-e__score {
		margin-left: 0;
	}

	.ar-nt-fig--q img {
		max-width: 100%;
	}

	.ar-nt-toolbar {
		position: static;
	}

	.ar-nt-jump {
		max-height: 96px;
		overflow-y: auto;
	}

}


/* 建築結構的上下標。瀏覽器預設的 sup/sub 會把行距頂開，
   line-height:0 ＋ position:relative 讓它不影響本文行高。 */
.ar-nt-doc sup,
.ar-nt-doc sub {
	font-size: .74em;
	line-height: 0;
	position: relative;
	vertical-align: baseline;
}

.ar-nt-doc sup {
	top: -.42em;
}

.ar-nt-doc sub {
	bottom: -.2em;
}