/**
 * IIAC Footer Kit — 前台样式
 * 结构：顶部品牌条 / 分割线 / 公司信息 + 菜单列 / 分割线 / 订阅 + 底部菜单 + 二维码
 */

.iifk-footer {
	--iifk-divider: #24314d;
	--iifk-muted: #9aa7bd;
	--iifk-accent: #2f7bff;
	box-sizing: border-box;
	padding: 48px 24px 56px;
	font-size: 14px;
	line-height: 1.9;
	-webkit-font-smoothing: antialiased;
}

.iifk-footer *,
.iifk-footer *::before,
.iifk-footer *::after {
	box-sizing: inherit;
}

.iifk-footer__inner {
	max-width: 1400px;
	margin: 0 auto;
}

/* ---------- 顶部 ---------- */
.iifk-top {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	flex-wrap: wrap;
	padding-bottom: 26px;
}

.iifk-top__brand {
	display: flex;
	align-items: center;
	min-width: 200px;
}

/* Logo 显示区域限定：不拉伸、不溢出 */
.iifk-logo-box {
	display: inline-flex;
	align-items: center;
	justify-content: flex-start;
	max-width: 260px;
	max-height: 48px;
	overflow: hidden;
}

.iifk-logo {
	max-width: 260px;
	max-height: 44px;
	width: auto;
	height: auto;
	object-fit: contain;
	object-position: left center;
	display: block;
}

.iifk-brand-text {
	font-size: 24px;
	font-weight: 700;
	letter-spacing: 1px;
}

.iifk-top__slogan {
	font-size: 22px;
	font-weight: 700;
	letter-spacing: 1px;
	margin-left: auto;
	text-align: right;
}

/* ---------- 分割线 ---------- */
.iifk-divider {
	height: 1px;
	background: var(--iifk-divider);
	margin: 26px 0;
}

/* ---------- 主体 ---------- */
.iifk-main {
	display: grid;
	grid-template-columns: 1fr;
	gap: 40px;
	padding: 34px 0 0;
}

.iifk-company__name {
	font-weight: 700;
	margin-bottom: 8px;
}

.iifk-company__list {
	list-style: none;
	margin: 0;
	padding: 0;
	color: var(--iifk-muted);
}

.iifk-cols {
	display: grid;
	gap: 24px;
	grid-template-columns: repeat(4, minmax(0, 1fr));
}

.iifk-cols[data-cols="1"] { grid-template-columns: 1fr; }
.iifk-cols[data-cols="2"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.iifk-cols[data-cols="3"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.iifk-col__title {
	font-weight: 700;
	margin-bottom: 12px;
}

.iifk-col__list {
	list-style: none;
	margin: 0;
	padding: 0;
	color: var(--iifk-muted);
}

.iifk-col__list a,
.iifk-col--company a {
	color: inherit;
	text-decoration: none;
	transition: color .2s ease;
}

.iifk-col__list a:hover,
.iifk-col__list a:focus-visible,
.iifk-col--company a:hover {
	color: #fff;
	text-decoration: underline;
}

/* ---------- 底部一行：公司信息 | 解决方案 | 快捷菜单 | 二维码 ---------- */
.iifk-bottom {
	display: grid;
	grid-template-columns: minmax(300px, 1.55fr) minmax(180px, .95fr) minmax(150px, .8fr) minmax(250px, 1fr);
	gap: 48px;
	padding-top: 44px;
	align-items: start;
}

.iifk-col--company,
.iifk-col--solution,
.iifk-col--links,
.iifk-col--qr {
	min-width: 0;
}

/* ---------- 最底部：备案与版权 ---------- */
.iifk-legal {
	margin-top: 34px;
	padding-top: 22px;
	border-top: 1px solid var(--iifk-divider);
}

.iifk-legal__row {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 8px 24px;
	font-size: 12px;
	color: var(--iifk-muted);
}

.iifk-legal__item {
	color: var(--iifk-muted);
	text-decoration: none;
}

a.iifk-legal__item:hover {
	color: #fff;
}

.iifk-police {
	display: inline-flex;
	align-items: center;
	gap: 6px;
}

.iifk-police__img {
	width: 16px;
	height: 16px;
	object-fit: contain;
	flex: none;
}

.iifk-qr {
	min-width: 0;
}

.iifk-qr__list {
	display: flex;
	gap: 20px;
	justify-content: flex-start;
	flex-wrap: wrap;
}

.iifk-qr__item {
	margin: 0;
	text-align: center;
}

.iifk-qr__item img {
	width: 118px;
	height: 118px;
	object-fit: contain;
	object-position: center;
	border-radius: 6px;
	background: transparent;
	padding: 0;
	display: block;
}

/* 极细描边，替代原来的白色衬板：不遮挡透明底二维码 */
.iifk-qr__frame {
	display: inline-block;
	padding: 8px;
	border-radius: 8px;
	background: rgba(255, 255, 255, .06);
	line-height: 0;
}

.iifk-qr__item figcaption {
	margin-top: 8px;
	font-size: 12px;
	color: var(--iifk-muted);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
	.iifk-main { gap: 28px; }
	.iifk-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.iifk-bottom { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
	.iifk-top__slogan { font-size: 18px; }
}

@media (max-width: 560px) {
	.iifk-footer { padding: 32px 16px 40px; }
	.iifk-cols { grid-template-columns: 1fr; }
	.iifk-top { gap: 12px; }
	.iifk-top__slogan { font-size: 16px; }
	.iifk-brand-text { font-size: 20px; }
}

/* 尊重减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
	.iifk-footer * { transition: none !important; }
}