/* ==========================================================================
   FBGroup Child — Front Page（首頁專用樣式）
   依 brief §5
   ========================================================================== */

/* ==========================================================================
   通用 section 間距
   ========================================================================== */
.fb-section {
	padding: var(--space-section) 0;
}
.fb-section--tools,
.fb-section--cases,
.fb-section--posts {
	padding: 40px 0;
}
.fb-section--services {
	padding: 36px 0 44px;
}

/* ==========================================================================
   1. Hero — brief §5.1
   ========================================================================== */
.fb-hero {
	background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
	color: #fff;
	padding: 28px 0 22px;
}
.fb-hero__inner {
	display: grid;
	grid-template-columns: 1.4fr 1fr;
	gap: 24px;
	align-items: center;
}
.fb-hero__eyebrow {
	font-size: var(--fs-eyebrow);
	letter-spacing: 3px;
	color: rgba(255, 255, 255, 0.7);
	margin-bottom: 10px;
	text-transform: uppercase;
}
.fb-hero__title {
	font-size: var(--fs-h1-hero);
	font-weight: 500;
	line-height: var(--lh-tight);
	color: #fff;
	margin: 0 0 10px;
}
.fb-hero__subtitle {
	font-size: 12px;
	line-height: var(--lh-loose);
	color: rgba(255, 255, 255, 0.85);
	max-width: 460px;
	margin: 0 0 16px;
}
.fb-hero__ctas {
	display: flex;
	gap: 8px;
	flex-wrap: wrap;
}
/* Hero 大頭像 130×130 圓形 + 金色漸層 */
.fb-hero__avatar {
	width: 130px;
	height: 130px;
	border-radius: 50%;
	background: linear-gradient(135deg, var(--color-accent-gold), var(--color-accent-gold-deep));
	display: flex;
	align-items: center;
	justify-content: center;
	color: var(--color-accent-gold-text);
	margin-left: auto;
	overflow: hidden;
}
.fb-hero__avatar img {
	width: 100%;
	height: 100%;
	object-fit: cover;
}
.fb-hero__avatar-text {
	font-size: 56px;
	font-weight: 500;
	line-height: 1;
}

/* 行動版 Hero — 上下排 */
@media (max-width: 767px) {
	.fb-hero__inner {
		grid-template-columns: 1fr;
		gap: 18px;
	}
	.fb-hero__avatar {
		width: 96px;
		height: 96px;
		margin-left: 0;
		order: -1;
	}
	.fb-hero__avatar-text { font-size: 40px; }
	.fb-hero__title { font-size: var(--fs-h1-hero); }
}

/* ==========================================================================
   2. 工具卡網格 — brief §5.2
   ========================================================================== */
.fb-tools-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 12px;
}
.fb-tool-card {
	display: block;
	background: var(--color-tool-card-bg);
	border: 0.5px solid var(--color-tool-card-border);
	border-radius: var(--radius-card);
	padding: var(--space-card);
	text-decoration: none;
	color: inherit;
	transition: var(--transition-base);
}
.fb-tool-card:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-card-hover);
	text-decoration: none;
}
.fb-tool-card__title {
	font-size: 14px;
	font-weight: 500;
	color: var(--color-primary);
	margin: 6px 0 4px;
	line-height: 1.4;
}
.fb-tool-card__desc {
	font-size: 11px;
	color: var(--color-text-secondary);
	line-height: 1.5;
	margin: 0 0 6px;
}
.fb-tool-card__meta {
	font-size: 10px;
	color: var(--color-text-muted);
}

@media (max-width: 767px) {
	.fb-tools-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   3. 案例卡網格 — brief §5.3（4 卡 2x2）
   ========================================================================== */
.fb-cases-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 12px;
}
.fb-case-card {
	display: block;
	background: #fff;
	border: 0.5px solid var(--color-case-card-border);
	border-radius: var(--radius-card);
	padding: var(--space-card);
	text-decoration: none;
	color: inherit;
	transition: var(--transition-base);
}
.fb-case-card:hover {
	transform: translateY(-2px);
	box-shadow: var(--shadow-card-hover);
	text-decoration: none;
}
.fb-case-card__tags {
	display: flex;
	gap: 4px;
	flex-wrap: wrap;
	margin-bottom: 8px;
}
.fb-case-card__title {
	font-size: 14px;
	font-weight: 500;
	color: var(--color-primary);
	margin: 0 0 4px;
	line-height: 1.4;
}
.fb-case-card__desc {
	font-size: 11px;
	color: var(--color-text-secondary);
	line-height: 1.6;
	margin: 0 0 6px;
}
.fb-case-card__meta {
	font-size: 10px;
	color: var(--color-text-muted);
}

@media (max-width: 1023px) {
	.fb-cases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
	.fb-cases-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   4. 觀察筆記網格 — brief §5.4
   ========================================================================== */
.fb-posts-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 12px;
}
@media (max-width: 1023px) {
	.fb-posts-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
	.fb-posts-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   5. 服務列 — brief §5.5（主卡 1.6 : 副 1 : 副 1）
   ========================================================================== */
.fb-services-grid {
	display: grid;
	grid-template-columns: 1.6fr 1fr 1fr;
	gap: 12px;
}
.fb-service-card {
	background: #fff;
	border: 0.5px solid var(--color-border-cream);
	border-radius: var(--radius-card-lg);
	padding: 16px;
	display: flex;
	flex-direction: column;
}
.fb-service-card__title {
	font-size: 15px;
	font-weight: 500;
	color: var(--color-primary);
	margin: 8px 0 6px;
	line-height: 1.4;
}
.fb-service-card__desc {
	font-size: 12px;
	color: var(--color-text-secondary);
	line-height: 1.6;
	margin: 0 0 12px;
	flex: 1;
}
.fb-service-card__link {
	font-size: 12px;
	color: var(--color-accent-orange);
	font-weight: 500;
	text-decoration: none;
}
.fb-service-card__link:hover { text-decoration: underline; color: var(--color-accent-orange); }

/* 主卡（金色漸層 + 邊框） */
.fb-service-card--main {
	background: linear-gradient(135deg, #FFFAEF, #FAEEDA);
	border: 1px solid var(--color-accent-gold);
}
.fb-service-card__header {
	display: flex;
	gap: 6px;
	align-items: center;
	flex-wrap: wrap;
	margin-bottom: 6px;
}
.fb-service-card__sub-tag {
	font-size: 10px;
	color: var(--color-text-secondary);
}
.fb-service-card__footer {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
	margin-top: 8px;
}
.fb-service-card__proof {
	font-size: 10px;
	color: var(--color-accent-gold-mid);
}

@media (max-width: 1023px) {
	.fb-services-grid { grid-template-columns: 1fr; }
}