/*! 数智化转型网 · 站内助手 v1.0
 *  配色沿用前台品牌色：深蓝 #1a3cb8 / 青 #00b4ff
 */

/* ============================================================
   0. 共用变量与外壳

   变量必须定义在 :root 上，不能只挂在 .kb-widget 里 ——
   独立页的 .kb-page 用的是同一批变量名，挂在组件作用域上时
   独立页全部取不到值，按钮会变成没有背景的透明块。
   ============================================================ */
:root {
	--kb-blue: #1a3cb8;
	--kb-blue-d: #152e8c;
	--kb-cyan: #00b4ff;
	--kb-ink: #1b2233;
	--kb-text: #3c4257;
	--kb-muted: #7a8194;
	--kb-line: #e3e7f0;
	--kb-tint: #eef3ff;
}

.kb-widget {
	position: fixed;
	right: 24px;
	bottom: 28px;
	z-index: 9999;
	font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
	line-height: 1.7;
	color: var(--kb-text);
}

@media (max-width: 620px) {
	.kb-widget {
		right: 14px;
		bottom: 16px;
	}
}

/* ============================================================
   1. 启动按钮
   ============================================================ */
.kb-launcher {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	padding: 11px 18px;
	border: 0;
	border-radius: 999px;
	background: linear-gradient(135deg, #2c4fd8, var(--kb-blue) 60%, #162f92);
	color: #fff;
	font-size: 15px;
	font-weight: 600;
	letter-spacing: .5px;
	box-shadow: 0 10px 28px rgba(20, 40, 120, .30);
	cursor: pointer;
	transition: transform .18s ease, box-shadow .18s ease;
}

.kb-launcher:hover {
	transform: translateY(-2px);
	box-shadow: 0 14px 34px rgba(20, 40, 120, .36);
}

.kb-launcher:focus-visible {
	outline: 2px solid var(--kb-cyan);
	outline-offset: 3px;
}

.kb-launcher-ico {
	display: inline-flex;
	align-items: center;
}

@media (max-width: 620px) {
	.kb-launcher-txt {
		display: none;
	}
	.kb-launcher {
		padding: 13px;
	}
}

/* ============================================================
   2. 面板
   ============================================================ */
.kb-panel {
	position: absolute;
	right: 0;
	bottom: 58px;
	width: 380px;
	max-width: calc(100vw - 28px);
	background: #fff;
	border: 1px solid var(--kb-line);
	border-radius: 14px;
	box-shadow: 0 24px 60px rgba(14, 28, 84, .22);
	overflow: hidden;
	opacity: 0;
	transform: translateY(10px);
	transition: opacity .2s ease, transform .2s ease;
}

.kb-panel.is-open {
	opacity: 1;
	transform: translateY(0);
}

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

@media (max-width: 620px) {
	.kb-panel {
		bottom: 62px;
		width: calc(100vw - 28px);
		max-height: 70vh;
		display: flex;
		flex-direction: column;
	}
}

.kb-head {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding: 14px 16px;
	background: linear-gradient(135deg, #2c4fd8, var(--kb-blue) 70%, #162f92);
	color: #fff;
}

.kb-head-main {
	display: flex;
	flex-direction: column;
	min-width: 0;
}

.kb-head-main strong {
	font-size: 16px;
	letter-spacing: .5px;
}

.kb-head-sub {
	font-size: 12px;
	color: rgba(255, 255, 255, .78);
}

.kb-close {
	flex: none;
	width: 28px;
	height: 28px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 0;
	border-radius: 6px;
	background: rgba(255, 255, 255, .16);
	color: #fff;
	cursor: pointer;
}

.kb-close:hover {
	background: rgba(255, 255, 255, .28);
}

/* ============================================================
   3. 对话区
   ============================================================ */
.kb-body {
	max-height: 52vh;
	overflow-y: auto;
	padding: 16px;
	background: #f7f9fd;
}

@media (max-width: 620px) {
	.kb-body {
		max-height: none;
		flex: 1 1 auto;
	}
}

.kb-msg {
	margin-bottom: 14px;
	font-size: 14.5px;
}

.kb-msg p {
	margin: 0 0 8px;
}

.kb-bot {
	padding: 13px 15px;
	background: #fff;
	border: 1px solid var(--kb-line);
	border-radius: 4px 12px 12px 12px;
	color: var(--kb-text);
}

.kb-user {
	display: flex;
	justify-content: flex-end;
}

.kb-user > span {
	max-width: 85%;
	padding: 10px 14px;
	background: var(--kb-blue);
	color: #fff;
	border-radius: 12px 4px 12px 12px;
}

.kb-note {
	font-size: 12.5px;
	color: var(--kb-muted);
}

/* ============================================================
   4. 检索结果条目
   ============================================================ */
.kb-items {
	margin: 8px 0 0;
	padding: 0;
	list-style: none;
}

.kb-item {
	padding: 10px 0;
	border-top: 1px dashed var(--kb-line);
}

.kb-item:first-child {
	border-top: 0;
}

.kb-item a {
	color: var(--kb-blue);
	font-weight: 600;
	text-decoration: none;
}

.kb-item a:hover {
	color: #0092cc;
	text-decoration: underline;
}

.kb-item-ex {
	margin: 3px 0 4px;
	font-size: 13px;
	color: var(--kb-muted);
}

.kb-item-meta {
	font-size: 12px;
	color: var(--kb-muted);
}

.kb-item-meta .kb-cat {
	display: inline-block;
	margin-right: 8px;
	padding: 0 7px;
	border-radius: 999px;
	background: var(--kb-tint);
	color: var(--kb-blue);
}

/* ============================================================
   5. 建议按钮
   ============================================================ */
.kb-chips {
	display: flex;
	flex-wrap: wrap;
	gap: 7px;
	margin-top: 10px;
}

.kb-chips button {
	padding: 6px 12px;
	border: 1px solid var(--kb-blue);
	border-radius: 999px;
	background: #fff;
	color: var(--kb-blue);
	font-size: 13px;
	font-family: inherit;
	cursor: pointer;
	transition: background .15s ease, color .15s ease;
}

.kb-chips button:hover {
	background: var(--kb-blue);
	color: #fff;
}

/* ============================================================
   6. 输入
   ============================================================ */
.kb-form {
	display: flex;
	gap: 8px;
	padding: 10px 12px;
	border-top: 1px solid var(--kb-line);
	background: #fff;
}

.kb-input {
	flex: 1 1 auto;
	min-width: 0;
	height: 38px;
	padding: 0 12px;
	border: 1px solid var(--kb-line);
	border-radius: 8px;
	font-size: 14px;
	font-family: inherit;
	color: var(--kb-ink);
}

.kb-input:focus {
	outline: 0;
	border-color: var(--kb-blue);
	box-shadow: 0 0 0 3px rgba(26, 60, 184, .12);
}

.kb-send {
	flex: none;
	width: 40px;
	height: 38px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 0;
	border-radius: 8px;
	background: var(--kb-blue);
	color: #fff;
	cursor: pointer;
}

.kb-send:hover {
	background: var(--kb-blue-d);
}

.kb-send:disabled {
	opacity: .5;
	cursor: default;
}

.kb-foot {
	padding: 0 12px 10px;
	background: #fff;
	font-size: 12px;
	color: var(--kb-muted);
	text-align: center;
}

.kb-foot a {
	color: var(--kb-muted);
	text-decoration: none;
}

.kb-foot a:hover {
	color: var(--kb-blue);
}

/* ============================================================
   7. 独立页
   ============================================================ */
.kb-page {
	max-width: 900px;
	margin: 0 auto;
	padding: 34px 0 60px;
	font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
	color: var(--kb-text);
}

.kb-page-lead p {
	margin: 0 0 8px;
}

.kb-page-numbers strong {
	color: var(--kb-blue);
	font-size: 22px;
}

.kb-page-form {
	display: flex;
	gap: 10px;
	margin: 22px 0 18px;
}

.kb-page-input {
	flex: 1 1 auto;
	height: 46px;
	padding: 0 16px;
	border: 1px solid var(--kb-line);
	border-radius: 10px;
	font-size: 15px;
	font-family: inherit;
	color: var(--kb-ink);
	background: #fff;
}

.kb-page-input:focus {
	outline: 0;
	border-color: var(--kb-blue);
	box-shadow: 0 0 0 3px rgba(26, 60, 184, .12);
}

.kb-page-send {
	flex: none;
	padding: 0 28px;
	height: 46px;
	border: 0;
	border-radius: 10px;
	background: var(--kb-blue);
	color: #fff;
	font-size: 15px;
	font-weight: 600;
	font-family: inherit;
	cursor: pointer;
}

.kb-page-send:hover {
	background: var(--kb-blue-d);
}

.kb-page-result:empty {
	display: none;
}

.kb-page-result {
	margin-bottom: 34px;
	padding: 18px 20px;
	background: #fff;
	border: 1px solid var(--kb-line);
	border-radius: 12px;
}

.kb-page-cols {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 34px;
	margin-top: 8px;
}

@media (max-width: 760px) {
	.kb-page-cols {
		grid-template-columns: 1fr;
		gap: 26px;
	}
}

.kb-page h2 {
	font-size: 18px;
	color: var(--kb-ink);
	margin: 0 0 10px;
}

.kb-sec-list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.kb-sec-list li {
	padding: 9px 0;
	border-bottom: 1px dashed var(--kb-line);
}

.kb-sec-list a {
	color: var(--kb-blue);
	font-weight: 600;
	text-decoration: none;
}

.kb-sec-list a:hover {
	text-decoration: underline;
}

.kb-sec-list span {
	display: block;
	font-size: 13px;
	color: var(--kb-muted);
}

.kb-page-handoff {
	margin-top: 38px;
	padding: 20px 22px;
	background: var(--kb-tint);
	border-radius: 12px;
}

.kb-page-handoff ul {
	margin: 8px 0 0;
	padding-left: 20px;
}