/* ==========================================================
   section-research.css
   模块：section04 产业研究模块
   作用：三列研究卡片、头图标题条和文章列表
   说明：从原首页内联样式拆分，保留原视觉效果与响应式行为。
   ========================================================== */

/* ==========================================================
   section04.css - 深耕细分产业 板块样式
   ========================================================== */

#section04 {
	background: #ffffff;
}
/* ===== 主容器 ===== */
.news-module {
	max-width: 1960px;
	width: 100%;
	margin: 0 auto;
	background: #ffffff;
	padding: 73px 52px 44px;
	border: 1px solid rgba(0, 0, 0, 0.04);
	position: relative;
}
/* ===== 1. 标题区域 ===== */
.module-header {
	text-align: center;
	margin-bottom: 12px;
	position: relative;
	z-index: 2;
}
.module-header .main-title {
	font-size: 20px;
	color: #313131;
	letter-spacing: 3px;
	line-height: 1.6;
	margin-bottom: 4px;
}
/* ===== 2. 蓝色装饰横条 ===== */
.divider-bar {
	width: 160px;
	height: 3px;
	background: #00277a;
	margin: 14px auto 36px auto;
}
/* ===== 3. 三列模块 ===== */
.modules-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 24px;
	position: relative;
	z-index: 2;
}
/* ===== 每个模块卡片 ===== */
.module-card {
	background: #ffffff;
	border-radius: 0;
	overflow: hidden;
	display: flex;
	flex-direction: column;
	box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
	transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.module-card:hover {
	border-color: #c9a84c;
	box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
	transform: none;
}
/* ===== 头图区域 ===== */
.card-image {
	width: 100%;
	height: 352px;
	position: relative;
	overflow: hidden;
	flex-shrink: 0;
	background: #f5f7fa;
}
.card-image img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}
/* 头图底部蓝色横条 */
.blue-bar {
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	height: 55px;
	background: #00277a;
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 3;
}
.blue-bar .bar-title {
	font-size: 18px;
	font-weight: 700;
	color: #ffffff;
	letter-spacing: 4px;
}
/* ===== 文章列表 ===== */
.article-list {
	padding: 18px 20px 20px;
	flex: 1;
	display: flex;
	flex-direction: column;
	gap: 4px;
	list-style: none;
}
.article-list .list-item {
	font-size: 16px;
	font-weight: 400;
	color: #1e1e1e;
	line-height: 1.6;
	padding: 4px 0 4px 20px;
	position: relative;
	cursor: default;
	border-bottom: 1px solid #f0f2f5;
	transition: color 0.3s ease;
}
.article-list .list-item:last-child {
	border-bottom: none;
}
/* 普通圆点 */
.article-list .list-item::before {
	content: '●';
	position: absolute;
	left: 0;
	top: 4px;
	color: #00277a;
	font-size: 10px;
	transition: color 0.3s ease;
}
/* ===== 链接样式 ===== */
.article-list .list-item a {
	color: inherit;
	text-decoration: none;
	display: inline-block;
	transition: color 0.25s ease;
	cursor: pointer;
}
/* 悬停时文字变金，圆点颜色不变 */
.article-list .list-item:hover a {
	color: #f0cb58;
}
.article-list .list-item:hover::before {
	color: #00277a;
}

/* ==========================================================
   响应式适配
   ========================================================== */
@media (max-width: 1280px) {
.news-module {
	padding: 36px 32px 32px;
}
.module-header .main-title {
	font-size: 22px;
}
.card-image {
	height: 140px;
}
.blue-bar {
	height: 48px;
}
.blue-bar .bar-title {
	font-size: 16px;
	letter-spacing: 3px;
}
.article-list {
	padding: 14px 16px 16px;
}
.article-list .list-item {
	font-size: 13px;
}
}

@media (max-width: 1100px) {
.news-module {
	padding: 30px 24px 26px;
}
.module-header .main-title {
	font-size: 20px;
}
.modules-grid {
	gap: 18px;
}
.card-image {
	height: 120px;
}
.blue-bar {
	height: 42px;
}
.blue-bar .bar-title {
	font-size: 15px;
	letter-spacing: 2px;
}
.article-list {
	padding: 12px 14px 14px;
	gap: 3px;
}
.article-list .list-item {
	font-size: 12.5px;
	padding: 3px 0 3px 18px;
}
.article-list .list-item::before {
	font-size: 9px;
	top: 3px;
}
}

@media (max-width: 860px) {
#section04 {
	padding: 20px 0 30px;
}
.news-module {
	padding: 24px 18px 22px;
}
.module-header .main-title {
	font-size: 18px;
	letter-spacing: 0.5px;
}
.divider-bar {
	margin: 10px auto 24px auto;
	width: 8%;
}
.modules-grid {
	grid-template-columns: repeat(2, 1fr);
	gap: 16px;
}
.modules-grid .module-card:last-child {
	grid-column: 1 / 3;
}
.card-image {
	height: 130px;
}
.blue-bar {
	height: 42px;
}
.blue-bar .bar-title {
	font-size: 16px;
	letter-spacing: 3px;
}
.article-list {
	padding: 14px 16px 16px;
}
.article-list .list-item {
	font-size: 13px;
}
}

@media (max-width: 640px) {
#section04 {
	padding: 14px 0 20px;
}
.news-module {
	padding: 18px 14px 16px;
	border: none;
}
.module-header .main-title {
	font-size: 16px;
	letter-spacing: 0.3px;
	line-height: 1.5;
}
.divider-bar {
	width: 12%;
	margin: 8px auto 18px auto;
}
.modules-grid {
	grid-template-columns: 1fr;
	gap: 14px;
}
.modules-grid .module-card:last-child {
	grid-column: 1 / 2;
}
.card-image {
	height: 110px;
}
.blue-bar {
	height: 36px;
}
.blue-bar .bar-title {
	font-size: 15px;
	letter-spacing: 2px;
}
.article-list {
	padding: 12px 14px 14px;
	gap: 2px;
}
.article-list .list-item {
	font-size: 12.5px;
	padding: 3px 0 3px 18px;
	line-height: 1.5;
}
.article-list .list-item::before {
	font-size: 9px;
	top: 3px;
}
}

@media (max-width: 400px) {
.news-module {
	padding: 14px 10px 12px;
}
.module-header .main-title {
	font-size: 14px;
}
.card-image {
	height: 90px;
}
.blue-bar {
	height: 32px;
}
.blue-bar .bar-title {
	font-size: 13px;
	letter-spacing: 1px;
}
.article-list {
	padding: 10px 10px 12px;
}
.article-list .list-item {
	font-size: 11.5px;
	padding: 2px 0 2px 16px;
}
.article-list .list-item::before {
	font-size: 8px;
	top: 2px;
}
}