/*
 * 基础样式：字体、排版、跳到主要内容、焦点样式、版心、按钮、页眉、页脚。每个页面都加载。
 * 颜色、圆角只引用 brand/*.css 里的变量。移动优先；断点 768px（平板）、1100px（页眉展开主菜单）。
 */

:root {
	--fm-font-body: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
	--fm-font-display: "LXGW WenKai TC", "Noto Sans TC", serif;
}

/* 简体页正文用简体字形（技术评审 D6） */
:root:lang(zh-CN) {
	--fm-font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
	--fm-font-display: "LXGW WenKai TC", "Noto Sans SC", serif;
}

body {
	margin: 0;
	background: var(--fm-color-surface);
	color: var(--fm-color-text);
	font-family: var(--fm-font-body);
	font-size: 16px;
	line-height: 1.7;
}

a {
	color: var(--fm-color-accent);

	&:hover {
		color: var(--fm-color-primary);
	}
}

input,
textarea,
select,
button {
	font: inherit;
}

/* hidden 属性一律生效，不被组件的 display 盖掉（表单送出后收起、提示框显示和隐藏都靠它） */
[hidden] {
	display: none !important;
}

/* 焦点样式：嫩绿描边 + 外圈主色，深浅底上都看得见（第五版） */
:where(a, button, input, textarea, select, summary, [tabindex]):focus-visible {
	outline: 3px solid var(--fm-color-cta);
	outline-offset: 2px;
	box-shadow: 0 0 0 6px var(--fm-color-primary);
}

.fm-skip {
	position: absolute;
	top: -80px;
	left: 16px;
	z-index: 100;
	padding: 12px 18px;
	border-radius: var(--fm-radius-tile);
	background: var(--fm-color-cta);
	color: var(--fm-color-on-cta);
	font-weight: 700;
	text-decoration: none;

	&:focus {
		top: 12px;
		color: var(--fm-color-on-cta);
	}
}

.fm-container {
	box-sizing: border-box;
	max-width: var(--fm-width-page);
	margin-inline: auto;
	padding-inline: var(--fm-gutter);
}

/* ---------- 页眉 ---------- */

.fm-header {
	position: relative;
	z-index: 20;
	background: var(--fm-color-primary);
	color: var(--fm-color-on-primary);
}

.fm-header__inner {
	box-sizing: border-box;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	align-items: center;
	max-width: var(--fm-width-page);
	margin-inline: auto;
	padding: 10px var(--fm-gutter);
}

.fm-header__logo {
	display: flex;
	align-items: center;
	margin-right: auto;
	color: var(--fm-color-on-primary);
	text-decoration: none;
}

.fm-header__logo-img {
	display: block;
	width: auto;
	height: var(--fm-logo-height);
}

span.fm-header__logo-img {
	height: auto;
	font-family: var(--fm-font-display);
	font-size: 24px;
	font-weight: 700;
}

/* 手机菜单按钮 */
.fm-header__menu-button {
	display: none;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	padding: 0;
	border: 0;
	border-radius: var(--fm-radius-button);
	background: var(--fm-color-primary-deep);
	color: var(--fm-color-on-primary);
	box-shadow: none;
	cursor: pointer;

	&:hover {
		background: var(--fm-color-primary-deep);
		color: var(--fm-color-highlight);
	}
}

.fm-header__menu-icon-close,
.fm-header__menu-button[aria-expanded="true"] .fm-header__menu-icon-open {
	display: none;
}

.fm-header__menu-button[aria-expanded="true"] .fm-header__menu-icon-close {
	display: inline;
}

/* 主菜单：手机上是页眉下方展开的整宽列表 */
.fm-nav {
	order: 10;
	flex-basis: 100%;
}

.fm-nav__list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.fm-nav__link {
	display: block;
	padding: 12px;
	color: var(--fm-color-on-primary);
	font-size: 17px;
	font-weight: 700;
	text-decoration: none;

	&:hover {
		color: var(--fm-color-highlight);
	}

	&[aria-current="page"] {
		color: var(--fm-color-highlight);
		box-shadow: inset 3px 0 0 var(--fm-color-highlight);
	}
}

.fm-js {

	.fm-header__menu-button {
		display: flex;
	}

	.fm-nav:not(.is-open) {
		display: none;
	}

	.fm-nav {
		padding-bottom: 8px;
		border-top: 1px solid var(--fm-color-on-primary-line);
	}
}

/* 语言切换：手机上是一个按钮（.has-toggle），点开选语言；没有 JS 或没有按钮时三个链接并排 */
.fm-lang {
	position: relative;
}

.fm-lang__toggle {
	display: none;
	min-width: 44px;
	min-height: 44px;
	padding: 0 10px;
	border: 1px solid var(--fm-color-on-primary-line);
	border-radius: var(--fm-radius-button);
	background: transparent;
	color: var(--fm-color-on-primary);
	font-weight: 700;
	line-height: 1;
	box-shadow: none;
	cursor: pointer;

	&:hover {
		background: transparent;
		color: var(--fm-color-highlight);
	}
}

.fm-lang__list {
	display: flex;
	gap: 2px;
	margin: 0;
	padding: 3px;
	border-radius: var(--fm-radius-media);
	background: var(--fm-color-primary-deep);
	list-style: none;
}

.fm-lang__link {
	display: flex;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 44px;
	border-radius: var(--fm-radius-button);
	color: var(--fm-color-on-primary);
	text-decoration: none;

	&:hover {
		color: var(--fm-color-highlight);
	}

	&[aria-current="true"] {
		background: var(--fm-color-cta);
		color: var(--fm-color-on-cta);
		font-weight: 700;
	}
}

.fm-js {

	.fm-lang__toggle {
		display: inline-flex;
		align-items: center;
		justify-content: center;
	}

	.has-toggle .fm-lang__list {
		position: absolute;
		top: calc(100% + 6px);
		right: 0;
		flex-direction: column;
		min-width: 120px;
		box-shadow: var(--fm-shadow-tag);
	}

	.has-toggle .fm-lang__list:not(.is-open) {
		display: none;
	}

	.has-toggle .fm-lang__link {
		justify-content: flex-start;
		padding-inline: 12px;
	}
}

@media (min-width: 1100px) {

	.fm-header__inner {
		gap: 16px 24px;
		padding-block: 12px;
	}

	.fm-header__logo {
		margin-right: 0;
	}

	.fm-header__logo-img {
		height: var(--fm-logo-height-wide);
	}

	.fm-js .fm-header__menu-button,
	.fm-js .fm-lang__toggle {
		display: none;
	}

	.fm-nav,
	.fm-js .fm-nav,
	.fm-js .fm-nav:not(.is-open) {
		display: block;
		order: 0;
		flex-basis: auto;
		margin-left: auto;
		padding: 0;
		border: 0;
	}

	.fm-nav__list {
		display: flex;
		flex-wrap: wrap;
	}

	.fm-nav__link {
		font-size: 16px;
		font-weight: 400;

		&[aria-current="page"] {
			box-shadow: inset 0 -3px 0 var(--fm-color-highlight);
		}
	}

	.fm-js .has-toggle .fm-lang__list,
	.fm-js .has-toggle .fm-lang__list:not(.is-open) {
		position: static;
		display: flex;
		flex-direction: row;
		min-width: 0;
		box-shadow: none;
	}

	.fm-js .has-toggle .fm-lang__link {
		justify-content: center;
		padding-inline: 0;
	}
}

/* ---------- 页脚 ---------- */

.fm-footer {
	background: var(--fm-color-footer);
	color: var(--fm-color-on-footer);
	font-size: 14px;
	line-height: 1.7;

	a {
		color: var(--fm-color-on-primary);

		&:hover {
			color: var(--fm-color-highlight);
		}
	}
}

.fm-footer__inner,
.fm-footer__bottom {
	box-sizing: border-box;
	max-width: var(--fm-width-page);
	margin-inline: auto;
	padding-inline: var(--fm-gutter);
}

.fm-footer__inner {
	display: grid;
	gap: 16px;
	padding-block: 28px 8px;
}

.fm-footer__brand {
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.fm-footer__logo {
	display: block;
	align-self: flex-start;
	width: auto;
	height: var(--fm-logo-height);
}

.fm-footer__slogan {
	margin: 0;
	color: var(--fm-color-highlight);
	font-family: var(--fm-font-display);
	font-size: 18px;
}

.fm-footer__heading {
	margin: 0 0 4px;
	color: var(--fm-color-on-primary);
	font-family: inherit;
	font-size: 15px;
	font-weight: 700;
}

.fm-footer__links,
.fm-footer__legal {
	display: flex;
	flex-wrap: wrap;
	gap: 0 18px;
	margin: 0;
	padding: 0;
	list-style: none;
}

.fm-footer__link,
.fm-footer__legal-link {
	display: inline-block;
	padding-block: 12px;
}

.fm-footer__contact {
	display: flex;
	flex-direction: column;
	gap: 4px;
	font-style: normal;
}

.fm-footer__wechat {
	display: flex;
	gap: 12px;
	align-items: center;
}

.fm-footer__qr {
	display: block;
	width: 88px;
	height: 88px;
	border-radius: var(--fm-radius-button);
	background: var(--fm-color-surface);
}

.fm-footer__wechat-text {
	margin: 0;
}

.fm-footer__bottom {
	display: flex;
	flex-direction: column-reverse;
	gap: 4px;
	padding-block: 0 30px;
	color: var(--fm-color-on-footer-muted);
	font-size: 13px;
}

.fm-footer__copyright {
	margin: 0;
}

.fm-footer .fm-footer__legal-link {
	color: var(--fm-color-on-footer);
}

/* 手机上「快速连结」标题不显示，链接排成一段（第五版手机版） */
@media (max-width: 767px) {

	.fm-footer__heading {
		position: absolute;
		width: 1px;
		height: 1px;
		overflow: hidden;
		clip-path: inset(50%);
		white-space: nowrap;
	}
}

@media (min-width: 768px) {

	.fm-footer {
		font-size: 15px;
	}

	.fm-footer__inner {
		grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
		gap: 32px;
		align-items: start;
		padding-block: 44px 24px;
	}

	.fm-footer__logo {
		height: 64px;
	}

	.fm-footer__slogan {
		font-size: 22px;
	}

	.fm-footer__links {
		flex-direction: column;
		gap: 8px;
	}

	.fm-footer__link {
		padding-block: 10px;
	}

	.fm-footer__bottom {
		flex-direction: row;
		flex-wrap: wrap;
		gap: 16px;
		justify-content: space-between;
		align-items: center;
		padding-block: 16px 28px;
		border-top: 1px solid var(--fm-color-footer-line);
		font-size: 14px;
	}

	.fm-footer__legal-link {
		padding-block: 0;
	}
}