/* ══════════════════════════════════════════════════
   首頁（改版）
   ══════════════════════════════════════════════════ */

:root {
	--sa-ink: #201F1D;
	--sa-ink-2: #2B2A27;
	--sa-hairline: rgba(0, 0, 0, .18);
	--sa-hairline-light: rgba(255, 255, 255, .3);
	--sa-paper: #F7F6F4;
	--sa-muted: #3A3A3A;
}

/* ── 首屏 ───────────────────────────────────────── */

.sa-hero {
	position: relative;
	background-color: var(--sa-ink);
	color: #FFFFFF;
	overflow: hidden;
	padding: 3rem 0 2.5rem;
}

@media (min-width: 768px) {
	.sa-hero {
		padding: 5rem 0 4rem;
	}
}

.sa-vision__label {
	color: #F4855D;
	font-size: .98rem;
	letter-spacing: .16em;
	margin: 0 0 .9rem;
}

.sa-vision__title {
	color: #FFFFFF;
	font-size: clamp(1.9rem, 3.6vw, 2.9rem);
	font-weight: 400;
	line-height: 1.42;
	letter-spacing: .01em;
	margin: 0 0 1.5rem;
}

.sa-vision__body {
	color: #EDEAE6;
	font-size: 1.12rem;
	line-height: 2.2rem;
	margin: 0 0 1.5rem;
	padding-top: 1.5rem;
}

/* 首屏背景影片 */

.sa-hero__media {
	position: absolute;
	inset: 0;
	z-index: 0;
	overflow: hidden;
	background-color: var(--sa-ink);
	background-image: url('../images/hero.webp');
	background-position: center;
	background-size: cover;
}

.sa-hero__media video {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	min-width: 100%;
	min-height: 100%;
	width: auto;
	height: auto;
	object-fit: cover;
	object-position: center center;
	display: block;
}

/* 深色遮罩：確保白字對比達 AA */
.sa-hero__media::after {
	content: "";
	position: absolute;
	inset: 0;
	background:
		linear-gradient(90deg, rgba(32, 31, 29, .92) 0%, rgba(32, 31, 29, .82) 48%, rgba(32, 31, 29, .6) 100%),
		rgba(32, 31, 29, .35);
}

@media (max-width: 991.98px) {
	.sa-hero__media::after {
		background: rgba(32, 31, 29, .78);
	}
}

@media (prefers-reduced-motion: reduce) {
	.sa-hero__media video {
		display: none;
	}
}

.sa-hero__inner {
	position: relative;
	z-index: 2;
}

@media (min-width: 992px) {
	.sa-hero {
		padding: 6.5rem 0 5.5rem;
	}
}

.sa-kicker {
	display: inline-block;
	border-left: 3px solid #F4855D;
	padding-left: .7rem;
	margin-bottom: 1.25rem;
	color: #F4855D;
	font-size: 1rem;
	letter-spacing: .12em;
	line-height: 1.6;
	font-variant-numeric: tabular-nums;
}

.sa-hero h1 {
	font-size: clamp(2.3rem, 5.2vw, 4rem);
	line-height: 1.22;
	letter-spacing: .01em;
	margin-bottom: 1rem;
	color: #FFFFFF;
}

.sa-hero__ctas {
	display: flex;
	flex-wrap: wrap;
	gap: .75rem;
	padding: 0;
	margin: 0;
	list-style: none;
}

.sa-hero-cta {
	--bs-btn-color: #FFFFFF;
	--bs-btn-border-color: #FFFFFF;
	--bs-btn-bg: transparent;
	--bs-btn-hover-color: var(--sa-ink);
	--bs-btn-hover-bg: #FFFFFF;
	--bs-btn-hover-border-color: #FFFFFF;
	--bs-btn-active-color: var(--sa-ink);
	--bs-btn-active-bg: #F4855D;
	--bs-btn-active-border-color: #F4855D;
	display: inline-flex;
	align-items: center;
	gap: .55rem;
	padding: .85rem 1.4rem;
	border-width: 1px;
	border-radius: 2px;
}

.sa-hero-cta svg {
	width: 1.15rem;
	height: 1.15rem;
	flex: none;
}

.sa-hero-cta:focus-visible {
	outline: 3px solid #F4855D;
	outline-offset: 3px;
}

/* ── 區塊共用 ───────────────────────────────────── */

.sa-section {
	--sa-system-color: var(--sa-primary-darker);
	padding: 3rem 0;
	scroll-margin-top: 4.5rem;
}

@media (min-width: 768px) {
	.sa-section {
		padding: 4.5rem 0;
	}
}

.sa-section-asr { --sa-system-color: #AC370C; }
.sa-section-tts { --sa-system-color: #6E3B8E; }
.sa-section-srt { --sa-system-color: #1D6B5A; }
.sa-section-mt  { --sa-system-color: #274DAB; }

.sa-eyebrow {
	display: flex;
	align-items: baseline;
	gap: .75rem;
	margin-bottom: .75rem;
	color: var(--sa-muted);
	font-size: 1rem;
	letter-spacing: .1em;
	font-variant-numeric: tabular-nums;
}

.sa-eyebrow::after {
	content: "";
	flex: 1;
	height: 1px;
	background: var(--sa-hairline);
}

.sa-section h2 {
	margin-top: 0;
	color: var(--sa-system-color);
	font-size: clamp(1.7rem, 3vw, 2.3rem);
}

.sa-lead {
	font-size: calc(1.2rem + .3vw);
	font-weight: 700;
	line-height: 2.2rem;
	margin-bottom: 1.5rem;
}

.sa-system-icon {
	color: var(--sa-system-color);
	display: flex;
	align-items: center;
	gap: .4rem;
	margin-bottom: .75rem;
}

.sa-system-icon svg {
	width: 2rem;
	height: 2rem;
}

.sa-system-icon .bi-caret-right-fill {
	width: 1.1rem;
	height: 1.1rem;
}

/* ── 區塊內的並排按鈕 ───────────────────────────── */

.sa-actions {
	display: flex;
	flex-wrap: wrap;
	gap: .75rem;
}

/* 逐字稿辨識系統：墨綠色 */
.sa-section-srt .btn-info {
	--bs-btn-color: #FFFFFF;
	--bs-btn-bg: #1D6B5A;
	--bs-btn-border-color: #1D6B5A;
	--bs-btn-hover-color: #FFFFFF;
	--bs-btn-hover-bg: #17574A;
	--bs-btn-hover-border-color: #17574A;
	--bs-btn-active-color: #FFFFFF;
	--bs-btn-active-bg: #12453A;
	--bs-btn-active-border-color: #12453A;
}

/* ── 四系統並列比較卡 ───────────────────────────── */

.sa-compare {
	display: grid;
	grid-template-columns: 1fr;
	gap: 1.5rem;
	padding: 0;
	margin: 0;
	list-style: none;
}

@media (min-width: 768px) {
	.sa-compare {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

.sa-card {
	--sa-system-color: var(--sa-primary-darker);
	display: flex;
	flex-direction: column;
	gap: .75rem;
	height: 100%;
	background: #FFFFFF;
	border: 1px solid var(--sa-hairline);
	border-top: 4px solid var(--sa-system-color);
	border-radius: 2px;
	padding: 1.75rem 1.5rem 1.5rem;
}

.sa-card-asr { --sa-system-color: #AC370C; }
.sa-card-tts { --sa-system-color: #6E3B8E; }
.sa-card-srt { --sa-system-color: #1D6B5A; }
.sa-card-mt  { --sa-system-color: #274DAB; }

.sa-card h3 {
	margin: 0;
	color: var(--sa-system-color);
	font-size: 1.5rem;
}

.sa-card__what {
	margin: 0;
	line-height: 1.9rem;
}

.sa-card__spec {
	margin: .5rem 0 0;
	padding-top: 1rem;
	border-top: 1px solid var(--sa-hairline);
	display: grid;
	grid-template-columns: auto 1fr;
	gap: .45rem 1rem;
	font-size: 1rem;
}

.sa-card__spec dt {
	color: var(--sa-muted);
	font-weight: 400;
	white-space: nowrap;
}

.sa-card__spec dd {
	margin: 0;
	font-weight: 700;
	font-variant-numeric: tabular-nums;
}

.sa-card .btn {
	margin-top: auto;
	align-self: flex-start;
}

/* ── 數據 ───────────────────────────────────────── */

.sa-figures {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
	gap: 1.5rem;
	border-top: 1px solid var(--sa-hairline);
	padding: 1.75rem 0 0;
	margin: 2rem 0;
}

.sa-figures > div + div {
	border-left: 1px solid var(--sa-hairline);
	padding-left: 1.5rem;
}

.sa-figures dt {
	color: var(--sa-system-color);
	font-size: clamp(1.6rem, 2.6vw, 2.1rem);
	font-weight: 700;
	line-height: 1.3;
	font-variant-numeric: tabular-nums;
}

.sa-figures dd {
	color: var(--sa-muted);
	font-size: 1rem;
	line-height: 1.6rem;
	margin: .25rem 0 0;
}

/* ── 圖片佔位（版畫式襯底）───────────────────────── */

.sa-plate {
	border: 1px solid var(--sa-hairline);
	background: var(--sa-paper);
	padding: .7rem;
	border-radius: 2px;
}

.sa-plate {
	position: relative;
}

.sa-plate img,
.sa-plate video {
	display: block;
	width: 100%;
	height: auto;
}

/* 三支系統影片皆為 2880×1828，統一比例 */
.sa-plate video {
	aspect-ratio: 2880 / 1828;
	object-fit: cover;
}

/* 點擊影片即可暫停／播放（WCAG 2.2.2） */
.sa-feature-video {
	cursor: pointer;
}

.sa-feature-video:focus-visible {
	outline: 3px solid var(--bs-success);
	outline-offset: 2px;
}

.sa-plate__caption {
	margin: .6rem .1rem 0;
	color: var(--sa-muted);
	font-size: .95rem;
	line-height: 1.6rem;
}

/* ── 常見問題 ───────────────────────────────────── */

.sa-faq {
	max-width: 75ch;
	margin-top: 2rem;
	border-top: 1px solid var(--sa-hairline);
}

.sa-faq details {
	border-bottom: 1px solid var(--sa-hairline);
}

.sa-faq summary {
	display: flex;
	align-items: flex-start;
	gap: .75rem;
	padding: 1.1rem .25rem;
	font-weight: 700;
	cursor: pointer;
	list-style: none;
	color: var(--sa-ink);
}

.sa-faq summary::-webkit-details-marker {
	display: none;
}

.sa-faq summary::before {
	content: "＋";
	color: #AC370C;
	font-weight: 700;
	line-height: 1.6;
}

.sa-faq details[open] summary::before {
	content: "－";
}

.sa-faq summary:hover {
	background: rgba(var(--bs-primary-rgb), .06);
}

.sa-faq summary:focus-visible {
	outline: 3px solid var(--bs-success);
	outline-offset: 2px;
	border-radius: 2px;
}

.sa-faq details > p {
	margin: 0 0 1.1rem;
	padding: 0 .25rem 0 1.9rem;
	line-height: 2rem;
}

/* ── 影片 ───────────────────────────────────────── */

.sa-video {
	position: relative;
	max-width: 60rem;
	margin: 2rem 0 0;
	border: 1px solid var(--sa-hairline);
	background: #FFFFFF;
	padding: .7rem;
	border-radius: 2px;
}

.sa-video iframe {
	display: block;
	width: 100%;
	aspect-ratio: 16 / 9;
	height: auto;
	border: 0;
}

/* ── 現場紀錄相片 ───────────────────────────────── */

.sa-gallery {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 1.25rem;
	max-width: 60rem;
	margin: 1.25rem 0 0;
	padding: 0;
	list-style: none;
}

.sa-gallery > li {
	display: flex;
}

.sa-gallery figure {
	display: flex;
	flex-direction: column;
	width: 100%;
}

.sa-gallery img {
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 3 / 2;
	object-fit: cover;
}

/* ── 首頁專用外框按鈕（站內設定會把 outline 變填色，這裡改回細框）──── */

.sa-card .btn-outline-primary,
.sa-card .btn-outline-danger,
.sa-card .btn-outline-success,
.sa-card .btn-outline-info {
	--sa-outline-color: #AC370C;
	--bs-btn-color: var(--sa-outline-color);
	--bs-btn-bg: transparent;
	--bs-btn-border-color: var(--sa-outline-color);
	--bs-btn-hover-color: #FFFFFF;
	--bs-btn-hover-bg: var(--sa-outline-color);
	--bs-btn-hover-border-color: var(--sa-outline-color);
	--bs-btn-active-color: #FFFFFF;
	--bs-btn-active-bg: var(--sa-outline-color);
	--bs-btn-active-border-color: var(--sa-outline-color);
	--bs-btn-focus-shadow-rgb: 0, 0, 0;
	border-width: 1px;
	border-radius: 2px;
}

.sa-card .btn-outline-danger { --sa-outline-color: #6E3B8E; }
.sa-card .btn-outline-success { --sa-outline-color: #274DAB; }
.sa-card .btn-outline-info { --sa-outline-color: #1D6B5A; }

.sa-card .btn-outline-primary:focus-visible,
.sa-card .btn-outline-danger:focus-visible,
.sa-card .btn-outline-success:focus-visible,
.sa-card .btn-outline-info:focus-visible {
	color: #FFFFFF;
	background-color: var(--sa-outline-color);
	outline: 3px solid var(--bs-success);
	outline-offset: 2px;
}

/* 語音合成系統：改用紫色，與語音辨識的橘紅區隔 */

.sa-section-tts .btn-danger {
	--bs-btn-color: #FFFFFF;
	--bs-btn-bg: #6E3B8E;
	--bs-btn-border-color: #6E3B8E;
	--bs-btn-hover-color: #FFFFFF;
	--bs-btn-hover-bg: #5A2F75;
	--bs-btn-hover-border-color: #5A2F75;
	--bs-btn-active-color: #FFFFFF;
	--bs-btn-active-bg: #4B2762;
	--bs-btn-active-border-color: #4B2762;
}

/* 首屏分隔線 */

.sa-hero hr {
	border-top: 1px solid var(--sa-hairline-light);
	opacity: 1;
	margin: 0 0 2.5rem;
}

.sa-hero__statement {
	margin-bottom: 2.5rem;
}

.sa-hero__statement .sa-vision__body {
	max-width: 46ch;
	border-top: 1px solid var(--sa-hairline-light);
}


/* 合作夥伴 */

.sa-closing {
	max-width: 44rem;
	margin: 0 auto;
	text-align: center;
}

.sa-closing h2 {
	margin-top: .5rem;
}

.sa-closing__body {
	font-size: 1.1rem;
	line-height: 2.15rem;
	margin: 1rem auto 0;
	text-align: left;
}

.sa-closing__motto {
	margin: 2.5rem 0 0;
	padding: 2rem 0;
	border-top: 1px solid var(--sa-hairline);
	border-bottom: 1px solid var(--sa-hairline);
}

.sa-closing__motto p {
	margin: 0;
	color: #AC370C;
	font-size: clamp(1.1rem, 1.8vw, 1.3rem);
	line-height: 2;
	text-wrap: balance;
}