/* ============================================================
优科生物官网 - 全局样式（统一管理）
所有页面在 中通过 引入：
包含：基础样式 + 头部导航样式 + 页脚样式
============================================================ */
/* ============================================================
1. 基础样式（CSS 变量、重置、全局元素、工具类）
============================================================ */
:root {
--color-primary: #07883f;
--color-primary-dark: #006b32;
--color-primary-light: #6fbe2e;
--color-accent: #b7db55;
--color-bg-soft: #f3f8f4;
--color-text: #1f2a24;
--color-text-secondary: #66736b;
--color-border: #dfe8e1;
--color-white: #ffffff;
--color-danger: #c63d3d;
--max-width: 1200px;
--radius: 10px;
--shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
--shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
--header-height: 72px;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
-webkit-text-size-adjust: 100%;
scroll-behavior: smooth;
}
body {
font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
font-size: 16px;
line-height: 1.75;
color: var(--color-text);
background: var(--color-white);
}
img {
max-width: 100%;
height: auto;
display: block;
border: 0;
}
a {
color: var(--color-primary);
text-decoration: none;
transition: color 0.2s;
}
a:hover {
color: var(--color-primary-dark);
}
ul,
ol {
list-style: none;
}
button {
font-family: inherit;
cursor: pointer;
border: none;
background: none;
}
.container {
width: calc(100% - 40px);
max-width: var(--max-width);
margin: 0 auto;
}
.icon {
display: inline-block;
vertical-align: middle;
flex-shrink: 0;
}
@media (max-width: 767px) {
.container {
width: calc(100% - 32px);
}
}
/* ============================================================
2. 头部导航样式（header 模块，class 以 header 前缀独立命名）
============================================================ */
.site-header {
position: sticky;
top: 0;
z-index: 100;
background: #fff;
border-bottom: 1px solid var(--color-border);
}
.site-header.is-scrolled {
box-shadow: var(--shadow-sm);
}
.header-inner {
display: flex;
align-items: center;
height: var(--header-height);
gap: 24px;
}
.header-brand {
display: flex;
align-items: center;
gap: 10px;
flex-shrink: 0;
}
.header-brand-logo {
height: 46px;
width: auto;
}
.header-brand-name {
font-size: 20px;
font-weight: 600;
color: var(--color-primary-dark);
}
.header-nav {
flex: 1;
}
.header-nav-list {
display: flex;
align-items: center;
justify-content: flex-end;
gap: 4px;
}
.header-nav-link {
display: block;
padding: 8px 16px;
color: var(--color-text);
font-size: 16px;
border-radius: 6px;
}
.header-nav-link:hover {
color: var(--color-primary);
background: var(--color-bg-soft);
}
.header-nav-item.is-active .header-nav-link {
color: var(--color-primary);
font-weight: 600;
}
.header-nav-item {
position: relative;
}
.header-nav-sub {
position: absolute;
top: 100%;
left: 0;
min-width: 160px;
padding: 8px;
margin: 0;
list-style: none;
background: #fff;
border: 1px solid var(--color-border);
border-radius: 8px;
box-shadow: var(--shadow-md);
opacity: 0;
visibility: hidden;
transform: translateY(8px);
transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}
.header-nav-item.has-children:hover .header-nav-sub {
opacity: 1;
visibility: visible;
transform: translateY(0);
}
.header-nav-sub-link {
display: block;
padding: 10px 14px;
color: var(--color-text);
font-size: 15px;
border-radius: 6px;
white-space: nowrap;
}
.header-nav-sub-link:hover {
color: var(--color-primary);
background: var(--color-bg-soft);
}
.header-actions {
display: flex;
align-items: center;
gap: 12px;
flex-shrink: 0;
}
.header-nav-toggle {
display: none;
align-items: center;
justify-content: center;
width: 44px;
height: 44px;
color: var(--color-text);
border-radius: 6px;
}
/* 移动端菜单 */
.header-mobile-menu {
position: fixed;
inset: 0;
z-index: 200;
display: none;
}
.header-mobile-menu.is-open {
display: block;
}
.header-mobile-menu-mask {
position: absolute;
inset: 0;
background: rgba(0, 0, 0, 0.45);
}
.header-mobile-menu-panel {
position: absolute;
top: 0;
right: 0;
bottom: 0;
width: 280px;
max-width: 82vw;
background: #fff;
padding: 0 20px 20px;
overflow-y: auto;
transform: translateX(100%);
transition: transform 0.25s ease;
}
.header-mobile-menu.is-open .header-mobile-menu-panel {
transform: translateX(0);
}
.header-mobile-menu-head {
display: flex;
align-items: center;
justify-content: space-between;
height: 64px;
border-bottom: 1px solid var(--color-border);
margin-bottom: 8px;
}
.header-mobile-menu-close {
display: flex;
align-items: center;
justify-content: center;
width: 40px;
height: 40px;
color: var(--color-text);
}
.header-mobile-nav-link {
display: block;
padding: 14px 8px;
color: var(--color-text);
font-size: 16px;
border-bottom: 1px solid var(--color-bg-soft);
}
.header-mobile-nav-item.is-active .header-mobile-nav-link {
color: var(--color-primary);
font-weight: 600;
}
.header-mobile-nav-sub {
list-style: none;
margin: 0;
padding: 0 0 0 16px;
}
.header-mobile-nav-sub-link {
display: block;
padding: 12px 8px;
color: var(--color-text-secondary);
font-size: 15px;
border-bottom: 1px solid var(--color-bg-soft);
}
/* 头部响应式 */
@media (max-width: 991px) {
.header-nav {
display: none;
}
.header-nav-toggle {
display: flex;
}
.header-actions {
margin-left: auto;
}
}
@media (max-width: 767px) {
.header-brand-name {
display: none;
}
}
/* ============================================================
3. 页脚样式（footer 模块，class 以 footer 前缀独立命名）
============================================================ */
.site-footer {
background: #1a1a2e;
color: #8899aa;
padding-top: 60px;
}
.footer-grid {
display: grid;
grid-template-columns: 2fr 1fr 1fr 1fr;
gap: 40px;
padding-bottom: 20px;
}
.footer-brand {
display: inline-block;
}
.footer-logo {
height: 46px;
width: auto;
}
.footer-desc {
font-size: 14px;
line-height: 1.9;
color: rgba(255, 255, 255, 0.6);
max-width: 460px;
}
.footer-title {
font-size: 15px;
color: #fff;
margin-bottom: 16px;
padding-bottom: 10px;
border-bottom: 1px solid rgba(255, 255, 255, 0.1);
font-weight: 600;
letter-spacing: 1px;
}
.footer-sitemap-links {
display: flex;
gap: 20px;
font-size: 12px;
}
.footer-sitemap-links a {
display: flex;
gap: 20px;
font-size: 12px;
}
.footer-links a {
color: rgba(255, 255, 255, 0.72);
font-size: 14px;
}
.footer-links a:hover {
color: var(--color-primary-light);
}
.footer-contact-list li {
display: flex;
align-items: flex-start;
gap: 10px;
font-size: 14px;
color: rgba(255, 255, 255, 0.72);
}
.footer-contact-list li + li {
margin-top: 14px;
}
.footer-contact-list svg {
flex-shrink: 0;
margin-top: 3px;
color: var(--color-primary-light);
}
.footer-contact-list a {
color: rgba(255, 255, 255, 0.72);
}
.footer-contact-list a:hover {
color: var(--color-primary-light);
}
.footer-qr {
margin-top: 20px;
max-width: 130px;
text-align: center;
}
.footer-qr img {
display: block;
margin: 0 auto;
padding: 4px;
background: #fff;
border-radius: 8px;
object-fit: cover;
}
.footer-qr span {
display: block;
margin-top: 8px;
font-size: 12px;
color: rgba(255, 255, 255, 0.6);
}
.footer-bottom__inner {
max-width: 1200px;
margin: 20px auto 0;
padding: 20px 0;
border-top: 1px solid rgba(255, 255, 255, 0.08);
display: flex;
justify-content: space-between;
align-items: center;
flex-wrap: wrap;
gap: 10px;
font-size: 12px;
color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a {
color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a:hover {
color: var(--color-primary-light);
}
/* 返回顶部 */
.back-top {
position: fixed;
right: 24px;
bottom: 24px;
z-index: 150;
display: flex;
align-items: center;
justify-content: center;
width: 44px;
height: 44px;
border-radius: 50%;
background: var(--color-primary);
color: #fff;
box-shadow: var(--shadow-md);
opacity: 0;
visibility: hidden;
transform: translateY(12px);
transition: opacity 0.2s, transform 0.2s, visibility 0.2s, background 0.2s;
}
.back-top:hover {
background: var(--color-primary-dark);
color: #fff;
}
.back-top.is-visible {
opacity: 1;
visibility: visible;
transform: translateY(0);
}
/* 页脚响应式 */
@media (max-width: 991px) {
.footer-grid {
grid-template-columns: 1fr 1fr;
}
}
@media (max-width: 767px) {
.footer-grid {
grid-template-columns: 1fr;
gap: 32px;
}
.footer-nav-col {
display: none;
}
.footer-bottom__inner {
flex-direction: column;
text-align: center;
}
.back-top {
right: 16px;
bottom: 16px;
}
}