/* ============================================================
   HAP Base — 设计变量（换皮只改这里）
   demo 站默认：温和健康绿。其他三站换 --color-* 和字体即可。
   ============================================================ */
:root {
	--color-primary: #2e7d5b;
	--color-primary-dark: #1e5c41;
	--color-accent: #e8a13c;
	--color-bg: #ffffff;
	--color-bg-soft: #f4f7f5;
	--color-text: #1f2a24;
	--color-text-soft: #4a5a52;
	--color-border: #d8e0db;

	/* 长者友善：正文 18px 起、行高 1.8、可整体放大 */
	--font-body: "PingFang TC", "PingFang SC", "Microsoft JhengHei", "Microsoft YaHei", "Noto Sans TC", sans-serif;
	--font-size-base: 1.125rem;   /* 18px */
	--font-size-lg: 1.375rem;     /* 22px */
	--line-height: 1.8;

	--container: 72rem;
	--radius: 0.75rem;
	--space: 1.5rem;
}

/* ---------- 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 100%; scroll-behavior: smooth; }

body {
	margin: 0;
	font-family: var(--font-body);
	font-size: var(--font-size-base);
	line-height: var(--line-height);
	color: var(--color-text);
	background: var(--color-bg);
}

img { max-width: 100%; height: auto; }

a { color: var(--color-primary-dark); text-decoration-thickness: 2px; text-underline-offset: 0.2em; }
a:hover { color: var(--color-primary); }

/* WCAG：清晰可见的键盘焦点 */
:focus-visible {
	outline: 3px solid var(--color-accent);
	outline-offset: 2px;
	border-radius: 2px;
}

/* 屏幕阅读器专用文字 */
.sr-only {
	position: absolute;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden;
	clip: rect(0 0 0 0);
	white-space: nowrap;
	border: 0;
}
.sr-only:focus {
	width: auto; height: auto;
	clip: auto;
	padding: 0.75rem 1.25rem;
	background: var(--color-primary-dark);
	color: #fff;
	z-index: 1000;
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 var(--space); }
.section { padding: calc(var(--space) * 2) 0; }

h1 { font-size: 2.25rem; line-height: 1.3; }
h2 { font-size: 1.75rem; line-height: 1.35; }
h3 { font-size: 1.25rem; }

/* 大按钮：长者友好点击区域 */
.btn {
	display: inline-block;
	padding: 0.9rem 2rem;
	font-size: var(--font-size-lg);
	font-weight: 600;
	color: #fff;
	background: var(--color-primary);
	border-radius: var(--radius);
	text-decoration: none;
}
.btn:hover { background: var(--color-primary-dark); color: #fff; }

/* ---------- 头部 ---------- */
.site-header {
	background: var(--color-bg);
	border-bottom: 1px solid var(--color-border);
	position: sticky;
	top: 0;
	z-index: 100;
}
.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--space);
	min-height: 3.75rem;
}
.site-title {
	font-size: var(--font-size-lg);
	font-weight: 700;
	color: var(--color-primary-dark);
	text-decoration: none;
}
.custom-logo { max-height: 56px; width: auto; }

.primary-nav ul {
	display: flex;
	align-items: center;
	gap: 0.5rem;
	list-style: none;
	margin: 0;
	padding: 0;
}
.primary-nav a {
	display: block;
	padding: 0.75rem 0.5rem; /* 大点击区域，长者友好 */
	font-weight: 600;
	color: var(--color-text);
	text-decoration: none;
	white-space: nowrap; /* 菜单文字不换行 */
}
.primary-nav a:hover { color: var(--color-primary); }
.primary-nav .current-menu-item > a { color: var(--color-primary-dark); border-bottom: 3px solid var(--color-primary); }

/* 语言切换器 */
.lang-switcher { border-left: 1px solid var(--color-border); padding-left: var(--space); }
.lang-switcher a { font-weight: 400; }
.lang-switcher .current-lang a { font-weight: 700; color: var(--color-primary-dark); }

/* 移动端导航按钮 */
.nav-toggle {
	display: none;
	width: 3rem; height: 3rem;
	background: none;
	border: 2px solid var(--color-border);
	border-radius: var(--radius);
	cursor: pointer;
}
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after {
	display: block;
	width: 1.5rem; height: 3px;
	margin: 0 auto;
	background: var(--color-text);
	content: "";
}
.nav-toggle-bar::before { transform: translateY(-8px); }
.nav-toggle-bar::after { transform: translateY(5px); }

/* ---------- Hero ---------- */
.hero {
	background: var(--color-bg-soft);
	padding: calc(var(--space) * 4) 0;
	text-align: center;
}
.hero h1 { margin: 0 0 var(--space); font-size: 2.75rem; color: var(--color-primary-dark); }
.hero-lead { font-size: var(--font-size-lg); color: var(--color-text-soft); max-width: 40rem; margin: 0 auto var(--space); }

/* ---------- 卡片 ---------- */
.card-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
	gap: var(--space);
}
.card {
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-radius: var(--radius);
	padding: var(--space);
}
.card-thumb img { border-radius: calc(var(--radius) / 2); }
.card-title { margin: 0.75rem 0 0.25rem; }
.card-title a { color: var(--color-text); text-decoration: none; }
.card-meta { color: var(--color-text-soft); font-size: 0.95rem; }

/* ---------- 页脚 ---------- */
.site-footer {
	background: var(--color-primary-dark);
	color: #fff;
	padding: calc(var(--space) * 2) 0 var(--space);
}
.footer-partners {
	display: flex;
	flex-wrap: wrap;
	gap: var(--space);
	justify-content: center;
	margin-bottom: var(--space);
}
.partner-slot {
	min-width: 10rem;
	padding: 1rem;
	border: 1px dashed rgba(255, 255, 255, 0.5);
	border-radius: var(--radius);
	text-align: center;
	color: rgba(255, 255, 255, 0.75);
	font-size: 0.95rem;
}
.footer-nav ul {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem var(--space);
	justify-content: center;
	list-style: none;
	margin: 0 0 var(--space);
	padding: 0;
}
.footer-nav a { color: #fff; }
.footer-copy { text-align: center; color: rgba(255, 255, 255, 0.75); margin: 0; }

/* ---------- 返回顶部 ---------- */
.back-to-top {
	position: fixed;
	right: 1.25rem;
	bottom: 1.25rem;
	width: 3.25rem; height: 3.25rem;
	font-size: 1.5rem;
	color: #fff;
	background: var(--color-primary);
	border: 0;
	border-radius: 50%;
	cursor: pointer;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.back-to-top:hover { background: var(--color-primary-dark); }

/* ---------- 移动端 ---------- */
@media (max-width: 56rem) {
	.nav-toggle { display: block; }
	.primary-nav {
		display: none;
		position: absolute;
		left: 0; right: 0; top: 100%;
		background: var(--color-bg);
		border-bottom: 1px solid var(--color-border);
		padding: var(--space);
	}
	.primary-nav.is-open { display: block; }
	.primary-nav ul { flex-direction: column; align-items: stretch; gap: 0.25rem; }
	.primary-nav a { padding: 0.9rem 0.5rem; font-size: var(--font-size-lg); }
	.lang-switcher { border-left: 0; padding-left: 0; border-top: 1px solid var(--color-border); padding-top: 0.5rem; }
	.hero h1 { font-size: 2rem; }
}

/* 尊重系统"减少动态效果"设置（WCAG） */
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	* { transition: none !important; animation: none !important; }
}

/* ---------- 顶部工具条 ---------- */
.utility-bar {
	background: var(--color-primary-dark);
	color: #fff;
	font-size: 0.9rem;
}
.utility-inner {
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: var(--space);
	min-height: 2.5rem;
}
.utility-bar .lang-switcher {
	border-left: 1px solid rgba(255, 255, 255, 0.3);
	padding-left: var(--space);
}
.utility-bar .lang-switcher a { color: #fff; padding: 0.2rem 0.4rem; }
.utility-bar .lang-switcher .current-lang a { color: #fff; border-bottom: 2px solid var(--color-accent); }

.font-size-switcher { display: flex; gap: 0.25rem; }
.font-size-switcher button {
	min-width: 2.25rem; min-height: 2.25rem;
	background: none;
	border: 1px solid rgba(255, 255, 255, 0.5);
	border-radius: 0.375rem;
	color: #fff;
	cursor: pointer;
	font-size: 0.9rem;
	line-height: 1;
}
.font-size-switcher .fs-large { font-size: 1.1rem; }
.font-size-switcher .fs-largest { font-size: 1.3rem; }
.font-size-switcher button[aria-pressed="true"] {
	background: #fff;
	color: var(--color-primary-dark);
	border-color: #fff;
}

/* ---------- 服务四步曲 ---------- */
.section-steps { background: var(--color-bg-soft); }
.section-lead { color: var(--color-text-soft); margin-top: -0.5rem; }
.steps-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
	gap: var(--space);
	list-style: none;
	margin: 0;
	padding: 0;
	counter-reset: step;
}
.step-card {
	position: relative;
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-top: 4px solid var(--color-primary);
	border-radius: var(--radius);
	padding: var(--space);
}
.step-num {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 2.75rem; height: 2.75rem;
	background: var(--color-primary);
	color: #fff;
	font-size: 1.4rem;
	font-weight: 700;
	border-radius: 50%;
	margin-bottom: 0.5rem;
}
.step-card h3 { margin: 0.25rem 0; color: var(--color-primary-dark); }
.step-card p { margin: 0; color: var(--color-text-soft); }

/* ---------- 资源区卡片链接 ---------- */
.card-link { text-decoration: none; color: var(--color-text); display: block; }
.card-link:hover { border-color: var(--color-primary); }
.card-link:hover .card-title { color: var(--color-primary-dark); }
.card-link p { margin: 0.25rem 0 0; color: var(--color-text-soft); }

/* ---------- 合作伙伴墙 ---------- */
.partners-wall {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
	gap: 1rem;
}
.partner-logo-slot {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 4.5rem;
	border: 1px dashed var(--color-border);
	border-radius: var(--radius);
	color: var(--color-text-soft);
	font-size: 0.95rem;
	background: var(--color-bg-soft);
}

/* ---------- Hero 图片版（有 hero.jpg 时启用） ---------- */
.hero.has-image {
	background:
		linear-gradient(rgba(30, 92, 65, 0.72), rgba(30, 92, 65, 0.72)),
		var(--hero-image) center / cover no-repeat;
	color: #fff;
}
.hero.has-image h1, .hero.has-image .hero-lead { color: #fff; }

/* ---------- 二级下拉菜单 ---------- */
.primary-nav .menu-item-has-children { position: relative; }
.primary-nav .sub-menu {
	display: none;
	position: absolute;
	top: 100%;
	left: 0;
	flex-direction: column;
	align-items: stretch;
	gap: 0;
	min-width: 11rem;
	background: var(--color-bg);
	border: 1px solid var(--color-border);
	border-radius: var(--radius);
	box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
	padding: 0.375rem;
	z-index: 200;
}
.primary-nav .sub-menu a { padding: 0.75rem 1rem; border-radius: 0.375rem; }
.primary-nav .sub-menu a:hover { background: var(--color-bg-soft); }
/* 鼠标悬停或键盘 Tab 进入都展开（无障碍） */
.primary-nav .menu-item-has-children:hover > .sub-menu,
.primary-nav .menu-item-has-children:focus-within > .sub-menu { display: flex; }

/* 下拉箭头提示 */
.primary-nav .menu-item-has-children > a::after {
	content: " ▾";
	font-size: 0.85em;
}

/* ---------- 移动端：子菜单直接展开缩进显示 ---------- */
@media (max-width: 56rem) {
	.primary-nav .sub-menu {
		display: flex;
		position: static;
		box-shadow: none;
		border: 0;
		border-left: 3px solid var(--color-border);
		border-radius: 0;
		margin: 0 0 0.25rem 1rem;
		padding: 0 0 0 0.75rem;
		min-width: 0;
	}
	.primary-nav .sub-menu a { padding: 0.7rem 0.5rem; }
	.utility-inner { justify-content: space-between; }
}

/* ---------- 页脚社交媒体 ---------- */
.footer-social {
	display: flex;
	justify-content: center;
	gap: 0.75rem;
	margin-bottom: var(--space);
}
.footer-social a {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 2.75rem;
	height: 2.75rem;
	color: #fff;
	border: 1px solid rgba(255, 255, 255, 0.4);
	border-radius: 50%;
}
.footer-social a:hover { background: rgba(255, 255, 255, 0.15); color: #fff; }

/* ---------- 头部紧凑工具组（字号 + 语言，收进头部一行） ---------- */
.header-tools {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	margin-left: 0.5rem;
	flex-shrink: 0;
}
.header-tools .lang-switcher {
	border-left: 1px solid var(--color-border);
	padding-left: 0.75rem;
}
.header-tools .lang-switcher a {
	padding: 0.35rem 0.35rem;
	font-size: 0.95rem;
	font-weight: 400;
}
.header-tools .lang-switcher .current-lang a { font-weight: 700; }

/* 覆盖旧工具条样式的字号按钮（浅色版） */
.font-size-switcher { display: flex; gap: 0.25rem; }
.font-size-switcher button {
	min-width: 2rem;
	min-height: 2rem;
	background: none;
	border: 1px solid var(--color-border);
	border-radius: 0.375rem;
	color: var(--color-text-soft);
	cursor: pointer;
	font-size: 0.85rem;
	line-height: 1;
}
.font-size-switcher .fs-large { font-size: 1rem; }
.font-size-switcher .fs-largest { font-size: 1.15rem; }
.font-size-switcher button[aria-pressed="true"] {
	background: var(--color-primary);
	border-color: var(--color-primary);
	color: #fff;
}

/* 桌面：导航面板内的工具隐藏；移动：头部右侧工具隐藏，收进展开面板 */
.nav-tools { display: none; }
@media (max-width: 56rem) {
	.header-tools--desktop { display: none; }
	.nav-tools {
		display: flex;
		gap: 1rem;
		margin: 0.75rem 0 0;
		padding: 0.75rem 0.5rem 0;
		border-top: 1px solid var(--color-border);
	}
	.nav-tools .lang-switcher { border-left: 0; padding-left: 0; }
}

/* 语言切换器横向排列修正 */
.lang-switcher {
	display: flex;
	align-items: center;
	gap: 0.25rem;
	list-style: none;
	margin: 0;
	padding: 0;
}
.lang-switcher li { display: inline-flex; }

/* ============================================================
   联辉智创金属 企业站换肤 —— 覆盖块
   钢铁藏青 + 工业橙、16px 紧凑排版、居中宽 hero、浅色数据带
   ============================================================ */
:root {
	--color-primary: #1e40af;
	--color-primary-dark: #17233c;
	--color-accent: #ea580c;
	--color-bg: #ffffff;
	--color-bg-soft: #f1f4f8;
	--color-text: #1a2332;
	--color-text-soft: #4a5568;
	--color-border: #d8dfe8;

	--font-body: "Segoe UI", "Helvetica Neue", "Noto Sans SC", "Microsoft YaHei", "PingFang SC", sans-serif;
	--font-size-base: 1rem;
	--font-size-lg: 1.25rem;
	--line-height: 1.75;

	--radius: 4px;
	--space: 1.5rem;
}

h1, h2, h3, h4 { letter-spacing: 0.01em; }

/* ---------- 藏青顶栏 ---------- */
.site-header {
	background: var(--color-primary-dark);
	border-bottom: none;
	box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}
.site-title { color: #fff; font-weight: 800; }
.primary-nav a { color: rgba(255, 255, 255, 0.88); font-weight: 500; }
.primary-nav a:hover { color: var(--color-accent); }
.primary-nav .current-menu-item > a { color: #fff; border-bottom-color: var(--color-accent); }
.nav-toggle { border-color: rgba(255, 255, 255, 0.4); }
.nav-toggle-bar, .nav-toggle-bar::before, .nav-toggle-bar::after { background: #fff; }

/* ---------- Hero：居中、宽、暗蓝渐变 ---------- */
.hero { padding: calc(var(--space) * 6) 0 calc(var(--space) * 5); }
.hero.has-image {
	background:
		linear-gradient(rgba(23, 35, 60, 0.82), rgba(23, 35, 60, 0.55)),
		var(--hero-image) center / cover no-repeat;
}
.hero h1 { font-size: 3rem; font-weight: 800; color: #fff; }
.hero-lead { color: rgba(255, 255, 255, 0.92); }
.hero .btn {
	display: inline-block;
	background: var(--color-accent);
	color: #fff;
	font-weight: 700;
	padding: 0.8rem 2.2rem;
	border-radius: var(--radius);
	text-decoration: none;
}
.hero .btn:hover { background: #f97316; color: #fff; }

/* ---------- 经营优势：浅色数据带 + 橙色大数字 ---------- */
.section-steps { background: var(--color-bg-soft); }
.section-steps .step-card {
	background: #fff;
	border: 1px solid var(--color-border);
	border-top: 3px solid var(--color-primary);
}
.section-steps .step-num {
	background: none;
	color: var(--color-accent);
	font-size: 2.2rem;
	font-weight: 800;
	width: auto;
	height: auto;
	border-radius: 0;
}

/* ---------- 卡片：直角 + 顶部强调线 ---------- */
.card { border-radius: var(--radius); border-top: 3px solid var(--color-primary); }
.card-link:hover { border-top-color: var(--color-accent); box-shadow: 0 6px 20px rgba(23, 35, 60, 0.12); }
.card-thumb img { border-radius: 2px; }

/* ---------- 区块标题左侧竖条 ---------- */
.section h2, main > .container > h2 {
	border-left: 5px solid var(--color-accent);
	padding-left: 0.75rem;
}

@media (max-width: 48rem) {
	.hero { padding: calc(var(--space) * 3) 0; }
	.hero h1 { font-size: 1.9rem; }
}

/* ---------- 版式 B 专属组件 ---------- */
/* 1. 分栏 Hero */
.split-hero { background: var(--color-primary-dark); color: #fff; padding: calc(var(--space) * 3.5) 0; }
.split-hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: calc(var(--space) * 2); align-items: center; }
.split-hero-text h1 { font-size: 2.6rem; font-weight: 800; margin: 0 0 var(--space); }
.split-hero-text .hero-lead { color: rgba(255, 255, 255, 0.85); margin: 0 0 var(--space); max-width: none; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.split-hero .btn { display: inline-block; background: var(--color-accent); color: #fff; font-weight: 700; padding: 0.8rem 2.2rem; border-radius: var(--radius); text-decoration: none; }
.split-hero .btn:hover { background: #f97316; }
.split-hero .btn-ghost { background: transparent; border: 2px solid rgba(255, 255, 255, 0.6); }
.split-hero .btn-ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }
.split-hero-img img { border-radius: var(--radius); display: block; width: 100%; height: 22rem; object-fit: cover; }

/* 2. 数据横条 */
.stat-strip { background: #fff; border-bottom: 1px solid var(--color-border); }
.stat-strip-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space); padding: var(--space) 0; }
.stat-item { text-align: center; }
.stat-item strong { display: block; font-size: 2rem; font-weight: 800; color: var(--color-primary); }
.stat-item .stat-unit { font-size: 0.9rem; font-weight: 600; margin-left: 0.2em; }
.stat-item span { color: var(--color-text-soft); font-size: 0.95rem; }

/* 3. 左右交替产品行 */
.prow { display: grid; grid-template-columns: 1fr 1fr; gap: calc(var(--space) * 2); align-items: center; margin-bottom: calc(var(--space) * 2); }
.prow-reverse .prow-img { order: 2; }
.prow-img img { border-radius: var(--radius); display: block; width: 100%; height: 16rem; object-fit: cover; }
.prow-text h3 { margin-top: 0; font-size: 1.5rem; }
.text-link { font-weight: 600; }

/* 4. 流程条 */
.section-flow { background: var(--color-bg-soft); }
.flow-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space); list-style: none; margin: 0; padding: 0; counter-reset: flow; }
.flow-steps li { background: #fff; border: 1px solid var(--color-border); border-left: 4px solid var(--color-accent); padding: var(--space); border-radius: var(--radius); }
.flow-num { display: block; font-size: 1.8rem; font-weight: 800; color: var(--color-accent); }
.flow-steps h3 { margin: 0.25rem 0; }
.flow-steps p { margin: 0; color: var(--color-text-soft); font-size: 0.95rem; }

/* 5. 新闻列表式 */
.news-list { list-style: none; margin: 0; padding: 0; }
.news-list li { display: flex; gap: 1.5rem; align-items: baseline; padding: 1rem 0; border-bottom: 1px solid var(--color-border); }
.news-list time { color: var(--color-text-soft); font-size: 0.95rem; white-space: nowrap; }
.news-list a { font-weight: 600; color: var(--color-text); text-decoration: none; }
.news-list a:hover { color: var(--color-primary); }

/* 6. CTA 横幅 */
.cta-band { background: var(--color-accent); color: #fff; padding: calc(var(--space) * 2) 0; }
.cta-band-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space); flex-wrap: wrap; }
.cta-band h2 { margin: 0 0 0.25rem; border-left: none; padding-left: 0; }
.cta-band p { margin: 0; opacity: 0.9; }
.btn-light { display: inline-block; background: #fff; color: var(--color-accent); font-weight: 700; padding: 0.8rem 2.2rem; border-radius: var(--radius); text-decoration: none; white-space: nowrap; }
.btn-light:hover { background: rgba(255, 255, 255, 0.9); }

/* 移动端 */
@media (max-width: 48rem) {
	.split-hero-inner { grid-template-columns: 1fr; }
	.split-hero-img img { height: 14rem; }
	.split-hero-text h1 { font-size: 1.7rem; }
	.stat-strip-inner { grid-template-columns: repeat(2, 1fr); }
	.prow { grid-template-columns: 1fr; gap: var(--space); }
	.prow-reverse .prow-img { order: 0; }
	.flow-steps { grid-template-columns: 1fr 1fr; }
	.cta-band-inner { flex-direction: column; text-align: center; }
}