/* ==========================================================
   设计变量（均取自效果图取色）
   主橙 #EF8642 / CTA浅橙 #EF8642 / 深灰蓝 #313940
   底栏 #424C55 / 标题 #333 / 辅助文字 #999
========================================================== */
:root {
  --c-primary: #EF8642;
  --c-primary-dark: #E05F00;
  --c-primary-light: #EF8642;
  --c-dark: #333333;
  --c-dark-2: #424C55;
  --c-title: #333333;
  --c-text: #666666;
  --c-muted: #7E848A;
  --c-on-dark: #ffffff;
  --c-line: #E8E8E8;
  --c-row-bg: #F6F7F9;
  --cert-grad-top: #4A536B;
  --cert-grad-btm: #26375A;

  --container: 1620px;
  --gap: 30px;
  --radius: 12px;
  --header-h: 100px;

  --fs-title: 40px;      /* 板块大标题 */
  --fs-sub: 16px;        /* 板块副标题 */
  --fs-nav: 18px;
  --fs-body: 16px;

  --tr: all .3s ease;
}

/* ========================== 基础 ========================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--c-title);
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }

.container {
/*  max-width: var(--container);*/
  margin: 0 auto;
  padding: 0 7.81%;
}

/* 板块标题 */
.section-head { text-align: center; }
.section-head h2 {
  font-size: var(--fs-title);
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--c-title);
}
.section-head p {
  margin-top: 16px;
  font-size: var(--fs-sub);
  color: var(--c-muted);
}

/* 滚动入场动画 */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: .12s; }
.reveal[data-delay="2"] { transition-delay: .24s; }
.reveal[data-delay="3"] { transition-delay: .36s; }

/* ========================== 顶部导航 ========================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: #fff;
  transition: box-shadow .3s ease;
  padding-top: 0;
}
.header.scrolled { box-shadow: 0 4px 16px rgba(0, 0, 0, .08); }
.header-inner {
  max-width: 1780px;
  height: 100%;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.container1{
    /*margin-top: 21px;*/
  height: 100%;
}
.logo img { height: 60px; width: auto; }
.nav { display: flex; align-items: center; gap: 38px; }
.nav a {
  font-size: var(--fs-nav);
  color: var(--c-title);
  transition: var(--tr);
  white-space: nowrap;
}
.nav a:hover,
.nav a.active { color: var(--c-primary); }

.header-tools { display: flex; align-items: center; gap: 22px; }
.header-tools .icon-btn { display: flex; transition: var(--tr); }
.header-tools .icon-btn:hover { transform: translateY(-2px); }
.header-tools .icon-btn img { width: 24px; height: 24px; }
.header-phone {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--c-primary);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.45;
}
.header-phone img { width: 30px; height: 30px; }

/* 汉堡按钮（移动端） */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--c-title);
  border-radius: 2px;
  transition: var(--tr);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========================== 首屏 Banner ========================== */
.hero {
  position: relative;
  height:  93vh;
}
/* 首屏 Swiper 轮播 */
.hero .hero-swiper { width: 100%; height: 100%; }
.hero .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left center;
}
.hero-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  height: 90px;
  padding: 0 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #fff;
}
.hero-count { font-size: 16px; font-weight: 700; letter-spacing: 1px; }
.hero-count strong { font-size: 30px; font-weight: 700; }
.hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255, 255, 255, .9);
}
.mouse {
  width: 20px;
  height: 32px;
  border: 2px solid rgba(255, 255, 255, .9);
  border-radius: 12px;
  position: relative;
}
.mouse::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 6px;
  width: 3px;
  height: 6px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: #fff;
  animation: wheel 1.6s ease-in-out infinite;
}
@keyframes wheel {
  0%   { transform: translateY(0);   opacity: 1; }
  70%  { transform: translateY(9px); opacity: 0; }
  100% { transform: translateY(0);   opacity: 0; }
}
.hero-arrows { display: flex; gap: 16px; }
.circle-arrow {
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--tr);
}
.circle-arrow:hover { background: var(--c-primary); border-color: var(--c-primary); }
.circle-arrow svg { width: 18px; height: 18px; }

/* ========================== 产品中心 ========================== */
.products { padding: 80px 0 ; }
.products .section-head { margin-bottom: 64px; }
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 31px;
}
.product-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  cursor: pointer;
}
.product-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.product-card:hover img { transform: scale(1.06); }
/* 文字默认隐藏，鼠标经过时才显示：上下左右全部居中 */
.product-card .card-mask {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.7) 100%);
  border-radius: 16px 16px 16px 16px;
  opacity: 0;
  transition: var(--tr);
}
.product-card:hover .card-mask { opacity: 1; }
.product-card .card-tag {
  color: #fff;
  font-size: 17px;
  letter-spacing: 2px;
  text-align: center;
  text-shadow: 0 2px 8px rgba(0, 0, 0, .5);
  transform: translateY(10px);
  transition: var(--tr);
}
.product-card:hover .card-tag { transform: translateY(0); }
/* 触屏设备无 hover，直接常显 */
@media (hover: none) {
  .product-card .card-mask { opacity: 1; }
  .product-card .card-tag { transform: none; }
}
.products-more { text-align: center; margin-top: 64px; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 20px 32px;
  border: 1px solid var(--c-line);
  border-radius: 8px;
  background: #fff;
  color: var(--c-text);
  font-size: 14px;
  transition: var(--tr);
  font-weight: 500;
  font-size: 18px;
  color: #333333;
}
.btn-ghost:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
  box-shadow: 0 6px 18px rgba(254, 107, 1, .18);
  transform: translateY(-2px);
}

/* ========================== 关于我们 ========================== */
.about { background: var(--c-dark); padding: 115px 0; color: #fff; }
.about-inner {
  display: flex;
  align-items: center;
  gap: 80px;
}
.about-text { flex: 1 1 52%; min-width: 0; }
.about-text h2 { font-size: var(--fs-title); font-weight: 700; letter-spacing: 2px; }
.about-text .about-sub {
  margin-top: 22px;
  font-size: 17px;
  color: #ffffff;
}
.about-text p {
  margin-top: 26px;
  font-size: var(--fs-body);
  line-height: 2;
  color: var(--c-on-dark);
  text-align: justify;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 36px;
  padding: 13px 30px;
  background: var(--c-primary);
  border-radius: 6px;
  color: #fff;
  font-size: 14px;
  transition: var(--tr);
}
.btn-primary:hover {
  background: var(--c-primary-dark);
  box-shadow: 0 8px 20px rgba(254, 107, 1, .35);
  transform: translateY(-2px);
}
.about-media {
  position: relative;
  flex: 1 1 48%;
  min-width: 0;
}
/* 橙色错位色块（效果图细节：图片右下角偏移的橙色矩形） */
.about-media::after {
  content: "";
  position: absolute;
  right: -18px;
  bottom: -18px;
  width: 100%;
  height: 100%;
  background: var(--c-primary);
  z-index: 0;
}
.about-media .about-img {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 720 / 450;
  object-fit: cover;
}
.about-play {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 90px;
  height: 90px;
  border-radius: 50%;
  overflow: hidden;
  transition: var(--tr);
}
.about-play:hover { transform: translate(-50%, -50%) scale(1.1); }
.about-play img { width: 100%; height: 100%; }

/* ========================== 公司规模 ========================== */
.scale { padding: 80px 0 0; }
.scale .section-head { margin-bottom: 60px; }
.scale-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}
.scale-grid img {
  width: 100%;
  aspect-ratio: 630 / 393;
  object-fit: cover;
  transition: var(--tr);
}
.scale-grid img:hover { opacity: .88; }

/* ========================== 资质证书 ========================== */
.certs {
  margin-top: 15px;
  padding: 79px 0 80px;
  background: url("../images/zzbg.jpg") no-repeat center;
  background-size: cover;
  color: #fff;
}
.certs .section-head h2 { color: #fff; }
.certs .section-head p { color: rgba(255, 255, 255, .75); }
.cert-wrap {
  position: relative;
  max-width: 92.7%;
  margin: 70px auto 0;
  padding:0  110px;
}
/* 资质证书 Swiper 轮播 */
.cert-swiper { width: 100%; }
.cert-item { text-align: center; }
.cert-item img {
  width: 100%;
  aspect-ratio: 330 / 440;
  object-fit: contain;
  transition: var(--tr);
}
.cert-item:hover img { transform: translateY(-8px); }
.cert-item span {
  display: inline-block;
  margin-top: 30px;
  font-size: 16px;
  color: var(--c-primary);
  letter-spacing: 2px;
}
.cert-nav {
  position: absolute;
  top: 42%;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--tr);
}
.cert-nav:hover { background: var(--c-primary); }
.cert-nav svg { width: 18px; height: 18px; }
.cert-nav.prev { left: 34px; }
.cert-nav.next { right: 34px; }

/* ========================== 应用领域 ========================== */
.fields { padding: 96px 0 0; }
.fields .section-head { margin-bottom: 60px; }
.fields-row {
  padding: 0 20px;
}
/* 应用领域 Swiper 轮播 */
.fields-swiper { width: 100%; }
.fields-swiper .swiper-slide { height: auto; }
.field-card {
  position: relative;
  width: 100%;
  height: 480px;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
}
.field-card > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.field-card:hover > img { transform: scale(1.06); }
.field-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .22);
  z-index: 1;
  transition: var(--tr);
}
/* 悬停展开态：遮罩加深，保证文案可读性 */
.field-card:hover::before { background: rgba(0, 0, 0, .45); }
.field-body {
  position: relative;
  z-index: 2;
  height: 100%;
  color: #fff;
}
/* 图标 + 标题：默认垂直居中，悬停后上移到顶部 */
.field-front {
  position: absolute;
  left: 24px;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: top .45s ease, transform .45s ease;
}
.field-card:hover .field-front {
  top: 52px;
  transform: translateY(0);
}
.field-icon { width: 60px; height: 60px; }
.field-card h3 {
  margin-top: 22px;
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 3px;
}
/* 悬停后淡入的详细文案（四张卡暂用同一文案） */
.field-desc {
  position: absolute;
  left: 26px;
  right: 26px;
  top: 178px;
  font-size: 15px;
  line-height: 2;
  text-align: left;
  letter-spacing: 1px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .35s ease, transform .45s ease;
  pointer-events: none;
}
.field-card:hover .field-desc {
  opacity: 1;
  transform: translateY(0);
}
/* 触摸设备无 hover：直接展示展开态 */
@media (hover: none) {
  .field-front { top: 52px; transform: translateY(0); }
  .field-desc { opacity: 1; transform: translateY(0); }
  .field-card::before { background: rgba(0, 0, 0, .45); }
}

/* ========================== 新闻中心 ========================== */
.news { padding: 96px 0 110px; }
.news .section-head { margin-bottom: 64px; }
.news-inner {
  display: flex;
  gap: 50px;
}
.news-cards {
  flex: 0 0 55%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-content: start;
}
.news-card { cursor: pointer; }
.news-card .thumb {
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 415 / 260;
}
.news-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
  border-radius: 15px;
}
.news-card:hover .thumb img { transform: scale(1.06); }
.news-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 16px;
  color: var(--c-muted);
}
.news-meta svg { width: 17px; height: 17px; stroke: var(--c-muted); }
.news-card h3 {
  margin-top: 14px;
  font-size: 18px;
  line-height: 1.65;
  color: var(--c-title);
  transition: var(--tr);
}
.news-card:hover h3 { color: var(--c-primary); }
.news-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 20px;
  font-size: 18px;
  color: var(--c-primary);
  transition: var(--tr);
}
.news-more:hover { gap: 10px; }

/* 右侧新闻列表 */
.news-list { flex: 1 1 45%; display: flex; flex-direction: column; gap: 5px; }
.news-row {
  display: flex;
  align-items: center;
  background: var(--c-row-bg);
  border-radius: 10px;
  padding: 22px 30px;
  cursor: pointer;
  transition: var(--tr);
}
.news-row:hover { background: #EEF1F4; transform: translateX(6px); }
.news-row .date {
  flex: 0 0 96px;
  text-align: center;
  line-height: 1.2;
}
.news-row:hover .date strong {
  color:#EF8642 ;
}
.news-row:hover .date i {
  color:#EF8642 ;
}
.news-row .date strong {
  display: block;
  font-size: 30px;
  font-weight: 700;
  color: #7E848A;
}
.news-row .date i {
  font-style: normal;
  font-size: 12px;
  color: var(--c-muted);
}
.news-row .divider {
  flex: 0 0 1px;
  align-self: stretch;
  background: #E3E6EA;
  margin: 2px 26px 2px 0;
}
.news-row p {
  font-size: 15px;
  color: var(--c-title);
  line-height: 1.6;
  transition: var(--tr);
}
.news-row.active p,
.news-row:hover p { color: var(--c-primary); }

/* ========================== 联系我们（橙色 CTA） ========================== */
.contact { background: var(--c-primary-light); padding: 34px 0; }
.contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.contact-inner h2 { font-size: 26px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.contact-inner p { margin-top: 12px; font-size: 15px; color: rgba(255, 255, 255, .92); }
.btn-white {
  flex: 0 0 auto;
  padding: 16px 46px;
  background: #fff;
  border-radius: 10px;
  color: var(--c-primary);
  font-size: 16px;
  letter-spacing: 2px;
  transition: var(--tr);
}
.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .18);
}

/* ========================== 页脚 ========================== */
.footer { background: var(--c-dark); color: #fff; padding: 70px 0 56px; }
.footer-inner {
  display: flex;
  gap: 60px;
}
.footer-brand { flex: 0 0 39%;
  position: relative;
}
.footer-brand:after {
  content: "";
  display: block;
  width: 1px;
  height: 277px;
  background: rgba(255,255,255,0.1);
  position: absolute;
  right: 8%;
  top: 0;
  z-index: 9;
}
.footer-brand .f-logo { width: 80%; height: auto; }
.footer-brand .f-label { margin-top: 21px; font-size: 13px; color: rgba(255,255,255,0.7); }
.footer-brand .f-tel {
  margin-top: 10px;
  display: flex;
  gap: 24px;
  font-size: 24px;
  font-weight: 600;
  color: var(--c-primary);
  letter-spacing: .5px;
}
.footer-brand .f-line { margin-top: 18px; font-size: 14px; font-weight: 400;color: rgba(255,255,255,0.7); }
.footer-brand .f-line b { color: #DDE2E6; font-weight: 400; margin-left: 8px; 
  font-weight: 400;
  font-size: 16px;
  color: #FFFFFF;
}
.footer-cols { flex: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; padding-top: 37px}
.footer-col h4 { font-size: 16px; font-weight: 600; margin-bottom: 26px;font-weight: 500;
font-size: 16px;
color: #FFFFFF; }
.footer-col li { margin-bottom: 16px; }
.footer-col a { font-size: 13px; color: var(--c-on-dark); transition: var(--tr); font-weight: 400;
font-size: 14px;
color: rgba(255,255,255,0.7);}
.footer-col a:hover { color: var(--c-primary); padding-left: 4px; }

.footer-bottom { background: var(--c-dark-2); }
.footer-bottom-inner {
  margin: 0 auto;
  padding: 13px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: #B9C0C6;
}
.footer-bottom-inner span:first-child { display: flex; gap: 28px; }

/* ========================== 响应式 ========================== */
@media (max-width: 1500px) {
  :root { --fs-title: 34px; --container: 1200px; }
  .hero-controls { padding: 0 60px; }
  .footer-brand { flex: 0 0 28%; }
}

@media (max-width: 1200px) {
  :root { --header-h: 80px; --fs-title: 30px; }
  .nav { gap: 24px; }
  .nav a { font-size: 14px; }
  .header-phone { font-size: 13px; }
  .about-inner { gap: 46px; }
  .field-card { height: 400px; }
  .news-inner { gap: 34px; }
  .footer-inner { flex-wrap: wrap; }
  .footer-brand { flex: 1 1 100%; }
  .footer-cols { flex: 1 1 100%; }
}

@media (max-width: 992px) {
  .header-tools .icon-btn { display: none; }
  .hamburger { display: flex; }
  /* 移动端抽屉菜单：用 max-height + opacity 收起/展开（不复用 display:none，
     否则 .open 也无法显示） */
  .nav {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    box-shadow: 0 16px 30px rgba(0, 0, 0, .12);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height .35s ease, opacity .3s ease, visibility .35s ease;
  }
  .nav.open {
    max-height: 480px;
    opacity: 1;
    visibility: visible;
  }
  .nav a { padding: 15px 28px; border-top: 1px solid #F2F2F2; }
  .header-phone { display: none; }

  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .about-inner { flex-direction: column; }
  .about-media { width: 100%; }
  .scale-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .cert-wrap { padding: 0 70px; }
  .field-card { height: 400px; }
  .field-desc { top: 168px; font-size: 14px; line-height: 1.9; }
  .news-inner { flex-direction: column; }
  .news-cards { flex: 1 1 auto; }
}

@media (max-width: 768px) {
  :root { --fs-title: 26px; --gap: 16px; }
  .products, .scale, .news { padding-top: 64px; }
  .products { padding-bottom: 64px; }
  .section-head { margin-bottom: 40px !important; }
  .hero { height: auto; }
  .hero .swiper-slide img { object-position: left center; }
  .hero-controls { height: 70px; padding: 0 24px; }
  .hero-scroll { display: none; }
  .circle-arrow { width: 40px; height: 40px; }
  .about { padding: 60px 0; }
  .about-media::after { right: -10px; bottom: -10px; }
  .about-play { width: 64px; height: 64px; }
  .certs { margin-top: 64px; padding: 60px 0; }
  .cert-wrap { margin-top: 44px; padding: 0 58px; }
  .cert-item span { margin-top: 18px; }
  .cert-nav { width: 40px; height: 40px; }
  .cert-nav.prev { left: 8px; }
  .cert-nav.next { right: 8px; }
  .fields { padding-top: 64px; }
  .field-card { height: 460px; }
  .field-desc { top: 165px; font-size: 14px; line-height: 1.85; }
  .news { padding-bottom: 64px; }
  .news-cards { grid-template-columns: 1fr; }
  .contact-inner { flex-direction: column; text-align: center; }
  .contact-inner h2 { font-size: 22px; }
  .footer { padding: 50px 0 36px; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); gap: 26px 16px; }
  .footer-col h4 { margin-bottom: 16px; }
  .footer-col li { margin-bottom: 10px; }
  .footer-brand .f-tel { flex-direction: column; gap: 6px; }
  .footer-bottom-inner { flex-direction: column; gap: 6px; text-align: center; }
}

@media (max-width: 560px) {
  .product-grid { grid-template-columns: 1fr; }
  .scale-grid { grid-template-columns: 1fr; }
  .news-row { padding: 14px 16px; }
  .news-row .date { flex-basis: 72px; }
  .news-row .date strong { font-size: 24px; }
  .news-row .divider { margin-right: 14px; }
  .news-row p { font-size: 13px; }
  .logo img { height: 46px; }
}

a:hover h3{
    color: #ffffff;
}
/* ==========================================================
   子页面样式（客户案例 / 资料下载 / 联系我们 / 新闻中心 /
   新闻详情 / 应用领域）
   复用 vendor/css.css 中的设计变量，保持与首页一致的视觉体系
========================================================== */

/* ========================== 页面横幅 ========================== */
.page-banner {
  position: relative;
  height: 430px;
  background: #232a30 url("../images/banner.jpg") center 78% / cover no-repeat;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(16, 21, 27, .70) 0%, rgba(16, 21, 27, .46) 45%, rgba(16, 21, 27, .12) 100%);
}
.page-banner-inner {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
}
.page-banner h1 {
  font-weight: 600;
font-size: 42px;
  letter-spacing: 1px;
  text-shadow: 0 2px 14px rgba(0, 0, 0, .35);
}
.page-banner .banner-sub {
  margin-top: 20px;
  font-size: 16px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, .88);
  position: relative;
  padding-top: 35px;
}
.page-banner .banner-sub:before {
  content: "";
  display: block;
  width: 80px;
  height: 5px;
  background:  #EF8642;
  position: absolute;
  left: 0;
  top: 0;
}

/* ========================== 面包屑 ========================== */
.crumb-bar {
  background: #fff;
  border-bottom: 1px solid #F0F0F0;
}
.crumb-bar .container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 20px;
  padding-bottom: 20px;
  font-size: 14px;
  color: #999;
}
.crumb-bar a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #999;
  transition: var(--tr);
}
.crumb-bar a:hover { color: var(--c-primary); }
.crumb-bar .crumb-home {
  width: 15px;
  height: 15px;
  stroke: var(--c-primary);
}
.crumb-bar .sep { color: #CCC; }
.crumb-bar .cur { color: #333; }

/* ========================== 分类标签 ========================== */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}
.filter-tabs button {
  padding: 12px 28px;
  border: 1px solid var(--c-line);
  border-radius: 6px;
  background: #fff;
  color: #555;
  font-size: 15px;
  white-space: nowrap;
  transition: var(--tr);
}
.filter-tabs button:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
}
.filter-tabs button.active {
  background: var(--c-primary);
  border-color: var(--c-primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(239, 134, 66, .30);
}

/* ========================== 客户案例 ========================== */
.case-section { padding: 64px 0 100px; background:#F5F5F5}
.case-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.case-card {
  background: #fff;
  border-radius: 0;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .05);
  cursor: pointer;
  transition: var(--tr);
  aspect-ratio: 390 / 244;
  position: relative;
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .12);
}
.case-card .thumb {
  overflow: hidden;
  aspect-ratio: 390 / 244;
}
.case-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.case-card:hover .thumb img { transform: scale(1.06); }
.case-card h3 {
  padding: 15px 14px;
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  color: var(--c-title);
  transition: var(--tr);
  background: rgba(0,0,0,0.5);
  position: absolute;
  bottom: 0;
  left: 0 ;
  width: 100%;
  font-weight: 400;
font-size: 18px;
color: #FFFFFF;
}
.case-card:hover h3 { color: var(--c-primary); }

/* ========================== 资料下载 ========================== */
.dl-section { padding: 64px 0 100px; }
.dl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.dl-card {
  border: 1px solid var(--c-line);
  border-radius: 12px;
  padding: 26px 24px 24px;
  background: #fff;
  transition: var(--tr);
}
.dl-card:hover {
  border-color: rgba(239, 134, 66, .45);
  box-shadow: 0 10px 28px rgba(0, 0, 0, .07);
  transform: translateY(-4px);
}
.dl-card .dl-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 20px;
  margin-bottom: 20px;
  border-bottom: 1px dashed #EDEFF1;
}
.dl-card .dl-head svg {
  width: 34px;
  height: 34px;
  flex: none;
}
.dl-card .dl-head h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--c-title);
}
.dl-actions { display: flex; gap: 14px; }
.dl-actions button {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 0;
  background: var(--c-row-bg);
  border-radius: 6px;
  font-size: 14px;
  color: #666;
  transition: var(--tr);
}
.dl-actions button:hover {
  background: #FDEEE2;
  color: var(--c-primary);
}
.dl-actions svg { width: 15px; height: 15px; }

/* ========================== 新闻中心 ========================== */
.news-section { padding: 64px 0 100px; }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.news-item { cursor: pointer; }
.news-item .thumb {
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}
.news-item .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.news-item:hover .thumb img { transform: scale(1.06); }
.news-item h3 {
  margin-top: 18px;
  font-size: 17px;
  line-height: 1.6;
  font-weight: 500;
  color: var(--c-title);
  min-height: 55px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--tr);
}
.news-item:hover h3 { color: var(--c-primary); }
.news-item .row {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--c-muted);
}
.news-item .date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-item .date svg {
  width: 15px;
  height: 15px;
  stroke: var(--c-muted);
}
.news-item .go {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--c-primary);
}
.news-item .go svg {
  width: 14px;
  height: 14px;
  transition: var(--tr);
}
.news-item:hover .go svg { transform: translateX(3px); }

/* ========================== 新闻详情 ========================== */
.article-section { padding: 64px 0 100px; }
.article { max-width: 900px; margin: 0 auto; }
.article h1 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.55;
  text-align: center;
  color: var(--c-title);
}
.article .article-meta {
  margin-top: 18px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 28px;
  font-size: 13px;
  color: var(--c-muted);
}
.article .article-body {
  margin-top: 42px;
  font-size: 16px;
  line-height: 2.1;
  color: #555;
  text-align: justify;
}
.article .article-body p { margin-bottom: 24px; }
.article .article-body img {
  display: block;
  width: 100%;
  border-radius: 10px;
  margin: 8px 0 34px;
}
.article-nav {
  max-width: 900px;
  margin: 56px auto 0;
  display: flex;
  gap: 20px;
}
.article-nav a {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--c-row-bg);
  border-radius: 10px;
  padding: 18px 22px;
  transition: var(--tr);
}
.article-nav a:hover { background: #EEF1F4; }
.article-nav .label {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  color: var(--c-muted);
}
.article-nav .t {
  font-size: 15px;
  color: var(--c-title);
  transition: var(--tr);
}
.article-nav a:hover .t { color: var(--c-primary); }
.article-nav svg {
  width: 16px;
  height: 16px;
  stroke: var(--c-muted);
  flex: none;
}
.article-nav .next { justify-content: flex-end; text-align: right; }
.article-nav .next svg { order: 3; }

/* ========================== 应用领域 ========================== */
.fields-section { padding: 40px 0 90px; }
.field-row {
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 44px 0;
}
.field-row:nth-child(even) { flex-direction: row-reverse; }
.field-row .thumb {
  flex: 1 1 52%;
  min-width: 0;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .08);
}
.field-row .thumb img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform .6s ease;
}
.field-row .thumb:hover img { transform: scale(1.04); }
.field-row .txt { flex: 1 1 48%; min-width: 0; }
.field-row h3 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--c-title);
}
.field-row .txt p {
  margin-top: 22px;
  font-size: 15px;
  line-height: 2.05;
  color: #666;
  white-space: pre-line;
}
.field-row .btn-primary { margin-top: 30px; }

/* ========================== 联系我们 ========================== */
.contact-section { padding: 70px 0 0; }
.contact-wrap {
  display: flex;
  align-items: flex-start;
  gap: 60px;
}
.contact-info { flex: 1 1 44%; min-width: 0; }
.contact-info h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--c-title);
}
.contact-info .sub {
  margin-top: 14px;
  font-size: 15px;
  color: var(--c-muted);
}
.info-list {
  margin-top: 44px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}
.info-item { display: flex; gap: 16px; align-items: flex-start; }
.info-item .ic {
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: #FDEEE2;
  display: flex;
  align-items: center;
  justify-content: center;
}
.info-item .ic svg {
  width: 22px;
  height: 22px;
  stroke: var(--c-primary);
}
.info-item .k { font-size: 13px; color: var(--c-muted); }
.info-item .v {
  margin-top: 4px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-title);
}
.msg-card {
  flex: 1 1 56%;
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: 14px;
  padding: 36px 36px 40px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .05);
}
.msg-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-title);
  margin-bottom: 26px;
}
.form-row { display: flex; gap: 16px; }
.form-row .field { flex: 1; min-width: 0; }
.field { margin-bottom: 16px; }
.field label {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  color: #666;
}
.field input,
.field textarea {
  width: 100%;
  border: 1px solid var(--c-line);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  color: var(--c-title);
  background: #fff;
  transition: var(--tr);
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(239, 134, 66, .12);
}
.field textarea {
  height: 130px;
  resize: vertical;
}
.msg-card .btn-primary {
  display: block;
  margin: 26px auto 0;
  padding: 13px 52px;
}
.map-wrap { margin-top: 70px; }
.map-wrap iframe {
  display: block;
  width: 100%;
  height: 460px;
  border: 0;
  background: #E9EDF0;
}

/* ========================== 轻提示 ========================== */
.wb-toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  z-index: 999;
  transform: translateX(-50%) translateY(20px);
  background: rgba(0, 0, 0, .78);
  color: #fff;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: var(--tr);
}
.wb-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ========================== 子页面响应式 ========================== */
@media (max-width: 1200px) {
  .page-banner { height: 380px; }
  .page-banner h1 { font-size: 40px; }
  .case-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .dl-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .news-grid { grid-template-columns: repeat(2, 1fr); gap: 26px; }
  .field-row { gap: 44px; }
  .contact-wrap { gap: 40px; }
}

@media (max-width: 992px) {
  .page-banner { height: 330px; }
  .page-banner h1 { font-size: 34px; }
  .page-banner .banner-sub { font-size: 14px; }
  .case-section, .dl-section, .news-section, .article-section { padding: 48px 0 70px; }
  .filter-tabs { margin-bottom: 36px; }
  .case-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .field-row { flex-direction: column !important; gap: 28px; padding: 34px 0; }
  .field-row .thumb { width: 100%; }
  .field-row h3 { font-size: 21px; }
  .contact-wrap { flex-direction: column; }
  .contact-info, .msg-card { flex: 1 1 auto; width: 100%; max-width: 100%; }
  .contact-section { padding-top: 52px; }
  .map-wrap { margin-top: 48px; }
  .map-wrap iframe { height: 380px; }
}

@media (max-width: 768px) {
  .page-banner { height: 260px; }
  .page-banner h1 { font-size: 26px; letter-spacing: 2px; }
  .page-banner .banner-sub { margin-top: 12px; font-size: 13px; }
  .crumb-bar .container { padding-top: 14px; padding-bottom: 14px; font-size: 13px; }
  .filter-tabs { gap: 10px; }
  .filter-tabs button { padding: 10px 18px; font-size: 14px; }
  .dl-grid { grid-template-columns: 1fr; }
  .article h1 { font-size: 21px; }
  .article .article-body { font-size: 15px; line-height: 1.95; }
  .article-nav { flex-direction: column; }
  .article-nav .next { justify-content: flex-start; text-align: left; }
  .article-nav .next svg { order: 0; }
  .msg-card { padding: 26px 20px 30px; }
  .form-row { flex-direction: column; gap: 0; }
  .map-wrap iframe { height: 300px; }
}

@media (max-width: 560px) {
  .case-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .news-item h3 { min-height: 0; }
  .dl-card { padding: 20px 16px 18px; }
  .field-row .txt p { font-size: 14px; }
}


.footer-bottom-inner a:hover{
  color: #FFFFFF;
}
.footer-bottom-inner{
  color: #ffffff;
}


.field-row a.btn-primary:hover{
  color: #ffffff;
}




/* ==========================================================
   关于戴纳密克 页面样式（公司简介 / 发展历程 / 公司规模 / 荣誉资质）
   ----------------------------------------------------------
   复用 vendor/css.css 中的设计变量与公共组件（导航 / 页脚 / 入场动画），
   本文件仅描述本页特有板块，保证样式独立、与全站视觉体系一致。
   ========================================================== */

/* ========================== 页面顶部二级导航 ========================== */
.about-subnav {
  background: #fff;
  border-bottom: 1px solid #F0F0F0;
}
.subnav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1780px;
  margin: 0 auto;
  padding: 0 32px;
  height: 60px;
  font-size: 14px;
}
/* 左侧面包屑：首页 › 当前页面 */
.subnav-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #999;
  white-space: nowrap;
}
.subnav-crumb a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #999;
  transition: var(--tr);
}
.subnav-crumb a:hover { color: var(--c-primary); }
.subnav-crumb .crumb-home { width: 15px; height: 15px; flex: none; }
.subnav-crumb .sep { color: #CCC; }
.subnav-crumb .cur { color: #333; }
/* 右侧栏目锚点链接 */
.subnav-links {
  display: flex;
  align-items: center;
  gap: 50px;
}
.subnav-links a {
  position: relative;
  color: #666;
  white-space: nowrap;
  transition: var(--tr);
}
.subnav-links a::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: -6px;
  height: 2px;
  border-radius: 1px;
  background: var(--c-primary);
  transition: left .3s ease, right .3s ease;
}
.subnav-links a:hover { color: var(--c-primary); }
.subnav-links a:hover::after { left: 0; right: 0; }

/* 锚点目标避开吸顶主菜单的遮挡 */
.about-intro,
.history,
.about-scale,
.about-certs { scroll-margin-top: calc(var(--header-h) + 16px); }

/* ========================== 公司简介 ========================== */
.about-intro { padding: 64px 0 0; }
.intro-title {
  font-size: var(--fs-title);
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--c-title);
}
.about-intro .intro-text p {
  margin-top: 22px;
  font-size: 15px;
  line-height: 2.15;
  color: var(--c-text);
  text-align: justify;
}
/* 全宽大楼横幅（效果图：通栏玻璃幕墙大楼） */
.intro-banner { margin-top: 54px; }
.intro-banner img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  object-position: center 42%;
}

/* ========================== 轮播箭头（发展历程 / 荣誉资质 共用） ========================== */
.hnav,
.cert-arrow {
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid #DFE3E8;
  background: #fff;
  color: #666;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--tr);
}
.hnav:hover,
.cert-arrow:hover {
  color: var(--c-primary);
  border-color: var(--c-primary);
  box-shadow: 0 6px 16px rgba(239, 134, 66, .18);
}
.hnav svg,
.cert-arrow svg { width: 18px; height: 18px; }

/* ========================== 发展历程 ========================== */
.history { padding: 84px 0 96px; }
.history .section-head { margin-bottom: 54px; }

/* 文本轮播舞台：左右箭头贴近视口两侧，里程碑文本居中 */
.history-stage {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 0 26px;
}
.history-swiper { flex: 1 1 auto; min-width: 0; }
.history-swiper .swiper-slide { height: auto; }
.history-swiper .swiper-slide p {
  max-width: 780px;
  min-height: 100px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 2.1;
  color: var(--c-text);
  text-align: center;
}

/* 年份时间轴：横线 + 年份节点，当前节点橙色高亮，可点击跳转 */
.history-timeline { position: relative; margin-top: 58px; }
.ht-line {
  position: absolute;
  top: 6px;
  left: 7px;
  right: 7px;
  height: 2px;
  background: #E6E8EB;
}
.ht-years {
  position: relative;
  display: flex;
  justify-content: space-between;
}
.ht-year {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 0;
}
.ht-year i {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #CFD4DA;
  border: 3px solid #fff;
  box-sizing: border-box;
  transition: var(--tr);
}
.ht-year span {
  font-size: 15px;
  line-height: 1;
  color: #9AA0A6;
  transition: var(--tr);
}
.ht-year:hover span { color: var(--c-primary); }
.ht-year.active i {
  background: var(--c-primary);
  box-shadow: 0 0 0 4px rgba(239, 134, 66, .16);
}
.ht-year.active span { color: var(--c-primary); font-weight: 700; }

/* ========================== 公司规模 ========================== */
.about-scale { padding: 84px 0 96px; }
.about-scale .section-head { margin-bottom: 54px; }
.about-scale .scale-swiper { width: 100%; }
/* 每组 6 张（桌面 3×2 / 平板 2×3），轮播切换组 */
.about-scale .scale-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}
.scale-cell {
  overflow: hidden;
  border-radius: 6px;
  aspect-ratio: 630 / 393;
  background: #F2F4F6;
}
.scale-cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.scale-cell:hover img { transform: scale(1.05); }
/* 分页器：静态排列在轮播下方、左对齐（效果图一致），激活点为品牌橙 */
.about-scale .swiper-pagination-bullets {
  position: static;
  margin-top: 34px;
  text-align: left;
  --swiper-pagination-bullet-size: 9px;
  --swiper-pagination-bullet-inactive-color: #CFD4DA;
  --swiper-pagination-bullet-inactive-opacity: 1;
  --swiper-pagination-bullet-horizontal-gap: 7px;
  --swiper-pagination-color: var(--c-primary);
  --swiper-pagination-bullet-opacity: 1;
}

/* ========================== 荣誉资质 ========================== */
.about-certs { padding: 84px 0 96px; }
.about-certs .section-head { margin-bottom: 54px; }
.cert-stage {
  position: relative;
  max-width: 92.7%;
  margin: 0 auto;
  padding: 0 110px;
}
.about-certs .cert-swiper { width: 100%; }
.about-certs .swiper-slide { height: auto; }
.acert {
  background: #fff;
  border: 1px solid #F0F2F4;
  border-radius: 10px;
  padding: 14px 14px 0;
  text-align: center;
  box-shadow: 0 8px 24px rgba(21, 34, 56, .06);
  transition: var(--tr);
}
.acert:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 34px rgba(21, 34, 56, .12);
}
.acert img {
  width: 100%;
  aspect-ratio: 330 / 440;
  object-fit: contain;
}
.acert span {
  display: block;
  padding: 18px 6px 20px;
  font-size: 15px;
  letter-spacing: 1px;
  color: var(--c-text);
}
/* 左右箭头：垂直对齐证书图区域 */
.cert-arrow { position: absolute; top: 43%; transform: translateY(-50%); }
.cert-arrow.prev { left: 34px; }
.cert-arrow.next { right: 34px; }

/* ========================== 响应式 ========================== */
@media (max-width: 1200px) {
  .subnav-inner { padding: 0 24px; }
  .subnav-links { gap: 36px; }
  .intro-banner img { height: 400px; }
  .history { padding: 70px 0 80px; }
  .about-scale, .about-certs { padding: 70px 0 80px; }
  .history-stage { gap: 16px; padding: 0 18px; }
  .cert-stage { padding: 0 76px; }
  .cert-arrow.prev { left: 18px; }
  .cert-arrow.next { right: 18px; }
}

@media (max-width: 992px) {
  .subnav-inner { height: 54px; }
  .subnav-links { gap: 28px; }
  .about-scale .scale-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .history-swiper .swiper-slide p { font-size: 15px; min-height: 116px; }
}

@media (max-width: 768px) {
  .subnav-inner { height: 50px; padding: 0 16px; gap: 14px; font-size: 13px; }
  .subnav-links { gap: 20px; }
  .about-intro { padding: 44px 0 0; }
  .intro-banner { margin-top: 36px; }
  .intro-banner img { height: 240px; }
  .about-intro .intro-text p { margin-top: 16px; font-size: 14px; line-height: 2; }
  .history, .about-scale, .about-certs { padding: 56px 0 64px; }
  .history .section-head,
  .about-scale .section-head,
  .about-certs .section-head { margin-bottom: 40px; }
  .hnav, .cert-arrow { width: 40px; height: 40px; }
  .hnav svg, .cert-arrow svg { width: 16px; height: 16px; }
  .history-stage { gap: 12px; padding: 0 14px; }
  .history-timeline { margin-top: 40px; }
  .ht-year { gap: 10px; }
  .ht-year i { width: 12px; height: 12px; border-width: 2px; }
  .ht-year span { font-size: 13px; }
  .cert-stage { max-width: 100%; padding: 0 56px; }
  .cert-arrow.prev { left: 4px; }
  .cert-arrow.next { right: 4px; }
  .acert { padding: 10px 10px 0; }
  .acert span { padding: 14px 4px 16px; font-size: 14px; }
}

@media (max-width: 560px) {
  /* 窄屏面包屑仅保留首页入口，保证四个锚点链接完整可点 */
  .subnav-crumb .sep, .subnav-crumb .cur { display: none; }
  .subnav-links { gap: 14px; }
  .subnav-links a { font-size: 12px; }
  .intro-title { font-size: 24px; letter-spacing: 1px; }
  .intro-banner img { height: 200px; }
  .history-timeline { margin-top: 32px; }
  .ht-year span { font-size: 12px; }
  .about-scale .scale-grid { gap: 10px; }
}
#history{
  background: url("../images/fzlc.png") no-repeat center;
  background-size: 100% 100%;
}