/* ===========================================================
   厦门泓立方官网 · 设计系统
   完全复刻参考站红白调企业站风格
   主色：红色；辅色：白/浅灰
   =========================================================== */

:root {
  --c-primary: #c4121a;
  --c-primary-dark: #9c0e14;
  --c-primary-light: #fff0f0;

  --c-text: #222;
  --c-text-2: #555;
  --c-text-3: #888;
  --c-line: #e8e8e8;
  --c-bg: #ffffff;
  --c-bg-2: #f8f8f8;
  --c-bg-3: #f0f0f0;

  --radius: 4px;
  --radius-lg: 8px;
  --container: 1200px;
  --header-h: 90px;

  --shadow-sm: 0 2px 10px rgba(0,0,0,.05);
  --shadow: 0 6px 24px rgba(0,0,0,.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  font-size: 14px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; color: var(--c-text); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- 顶部细条 ---------- */

/* ---------- 主菜单 header（左右分栏，中间 Logo） ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  position: relative;
}
.logo {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 22px;
  color: var(--c-primary);
}
.logo .logo-mark {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  display: grid; place-items: center;
  font-size: 18px; font-weight: 800;
}
.logo img {
  max-height: 64px;
  max-width: 220px;
  width: auto;
  height: auto;
  display: block;
}
.logo small {
  display: block;
  font-size: 11px;
  color: var(--c-text-3);
  font-weight: 500;
  letter-spacing: .5px;
  text-align: center;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 0;
}
.nav-left { margin-right: auto; padding-right: 100px; }
.nav-right { margin-left: auto; padding-left: 100px; }

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  height: var(--header-h);
  padding: 0 22px;
  font-size: 15px;
  color: var(--c-text);
  font-weight: 500;
  transition: color .2s;
  white-space: nowrap;
}
.nav-item:hover,
.nav-item.active { color: var(--c-primary); }
.nav-item.active::after {
  content: "";
  position: absolute;
  left: 22px; right: 22px; bottom: 22px;
  height: 2px;
  background: var(--c-primary);
}

/* 下拉菜单 */
.dropdown {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 160px;
  background: #fff;
  border-top: 2px solid var(--c-primary);
  box-shadow: var(--shadow);
  opacity: 0; visibility: hidden;
  transition: all .2s;
  z-index: 101;
}
.nav-item:hover .dropdown,
.dropdown:hover {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: block;
  padding: 12px 20px;
  font-size: 14px;
  color: var(--c-text-2);
  border-bottom: 1px solid #f2f2f2;
}
.dropdown a:hover { color: var(--c-primary); background: #fffafa; }

/* ---------- 通用区块 ---------- */
.section { padding: 60px 0; }
.section.alt { background: var(--c-bg-2); }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 {
  font-size: 28px;
  color: var(--c-primary);
  margin-bottom: 8px;
}
.section-head .sub {
  color: var(--c-text-3);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 28px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all .2s;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); }
.btn-ghost { border-color: var(--c-primary); color: var(--c-primary); background: #fff; }
.btn-ghost:hover { background: var(--c-primary-light); }
.btn-white { background: #fff; color: var(--c-primary); }
.btn-white:hover { background: #f2f2f2; }

/* ---------- 占位图 ---------- */
.ph {
  position: relative;
  width: 100%;
  background: repeating-linear-gradient(45deg, #f5f5f5 0 12px, #ececec 12px 24px);
  display: grid; place-items: center;
  color: #888;
  font-size: 12px;
  text-align: center;
  border: none;
  border-radius: var(--radius);
  overflow: hidden;
}
.ph .ph-label {
  padding: 8px 12px;
  background: rgba(255,255,255,.85);
  border-radius: 4px;
  line-height: 1.5;
}
.ph .ph-label b { color: var(--c-primary); display:block; font-size: 13px; }

/* ---------- Banner 轮播 ---------- */
.banner { position: relative; height: 520px; overflow: hidden; }
.banner .slide {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  opacity: 0; transition: opacity .7s;
}
.banner .slide.active { opacity: 1; }
.banner .slide .ph { position: absolute; inset: 0; border: none; border-radius: 0; }
.banner .slide .cap {
  position: relative; z-index: 2;
  text-align: center; color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,.35);
  padding: 0 20px;
}
.banner .slide .cap h1 { color: #fff; font-size: 42px; margin-bottom: 14px; }
.banner .slide .cap p { font-size: 18px; opacity: .95; margin-bottom: 26px; }
.banner .dots {
  position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px; z-index: 3;
}
.banner .dots i {
  width: 12px; height: 12px; border-radius: 50%;
  background: rgba(255,255,255,.5); cursor: pointer;
}
.banner .dots i.on { background: #fff; }

/* ---------- 页脚 ---------- */
.site-footer { background: #2a2a2a; color: #aaa; font-size: 13px; }
.site-footer a { color: #aaa; }
.site-footer a:hover { color: #fff; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 30px; padding: 46px 0 36px; }
.footer-top h5 { color: #fff; font-size: 15px; margin-bottom: 16px; font-weight: 700; }
.footer-top .fcol li { margin-bottom: 10px; }
.footer-top .qr { width: 100px; height: 100px; background: #fff; border-radius: 4px; padding: 4px; }
.footer-contact li { display: flex; gap: 8px; margin-bottom: 10px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 16px 0; text-align: center; font-size: 12px; color: #777;
}

/* ---------- 面包屑 ---------- */
.crumb { padding: 14px 0; font-size: 13px; color: var(--c-text-3); background: var(--c-bg-2); border-bottom: 1px solid var(--c-line); }
.crumb a:hover { color: var(--c-primary); }
.crumb .container { display: flex; align-items: center; gap: 8px; }

/* ---------- 内页头图 ---------- */
.page-hero {
  position: relative;
  height: 260px;
  display: grid; place-items: center;
  overflow: hidden;
}
.page-hero .ph { position: absolute; inset: 0; border: none; border-radius: 0; }
.page-hero .cap {
  position: relative; z-index: 2;
  text-align: center; color: #fff;
  text-shadow: 0 2px 10px rgba(0,0,0,.4);
}
.page-hero .cap h1 { color: #fff; font-size: 36px; margin-bottom: 6px; }
.page-hero .cap p { font-size: 14px; opacity: .9; letter-spacing: 3px; text-transform: uppercase; }
.page-hero .ph-banner { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; }

/* 新闻中心：清单列表 + 详情（文件驱动，assets/news/） */
.news-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin-top: 8px; }
.news-card { display: block; background: #fff; border: 1px solid #eee; border-radius: var(--radius); overflow: hidden; text-decoration: none; color: inherit; transition: box-shadow .2s, transform .2s; }
.news-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,.08); transform: translateY(-2px); }
.news-card-cover { height: 160px; background-size: cover; background-position: center; background-color: #f0f4f8; }
.news-card-body { padding: 16px 18px 20px; }
.news-card-date { font-size: 12px; color: #999; letter-spacing: 1px; }
.news-card-title { font-size: 17px; margin: 8px 0 10px; line-height: 1.4; color: var(--c-primary); }
.news-card-summary { font-size: 13px; color: #666; line-height: 1.6; margin: 0; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-back { display: inline-block; margin: 4px 0 18px; color: var(--c-primary); text-decoration: none; font-size: 14px; }
.news-detail-title { font-size: 26px; margin: 6px 0 10px; color: var(--c-primary); }
.news-detail-date { font-size: 13px; color: #999; margin-bottom: 20px; }
.news-detail-cover { width: 100%; max-height: 360px; object-fit: cover; border-radius: var(--radius); margin-bottom: 20px; }
.news-detail-content { font-size: 15px; line-height: 1.9; color: #333; }
.news-detail-content p { margin: 0 0 16px; }
.news-detail-content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.news-detail-content td { border: 1px solid #e3e8ee; padding: 10px 12px; vertical-align: top; line-height: 1.7; }
.news-detail-content img { max-width: 100%; height: auto; border-radius: var(--radius); display: block; margin: 16px 0; }
.news-empty { padding: 40px; text-align: center; color: #999; }

/* ---------- 子页导航条（关于我们/联系我们） ---------- */
.sub-nav-bar {
  background: #fff;
  border-bottom: 1px solid var(--c-line);
}
.sub-nav-bar .container {
  display: flex;
  height: 60px;
  align-items: stretch;
}
.sub-nav-title {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 180px;
  background: var(--c-primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  flex: none;
}
.sub-nav-tabs {
  display: flex;
  align-items: stretch;
  margin-left: 10px;
}
.sub-nav-tabs a {
  display: flex;
  align-items: center;
  padding: 0 32px;
  font-size: 15px;
  color: var(--c-text-2);
  position: relative;
}
.sub-nav-tabs a:hover { color: var(--c-primary); }
.sub-nav-tabs a.active {
  color: var(--c-primary);
  font-weight: 700;
}
.sub-nav-tabs a.active::after {
  content: "";
  position: absolute;
  left: 32px; right: 32px; bottom: 0;
  height: 3px;
  background: var(--c-primary);
}

/* 子页内容区 */
.sub-page-section { padding: 50px 0; }
.sub-page-section .container {
  max-width: 1100px;
}
.sub-content { display: none; }
.sub-content.active { display: block; }

/* ---------- 关于我们：公司简介 ---------- */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.about-intro .prose h2 { font-size: 26px; color: var(--c-primary); margin-bottom: 18px; }
.about-intro .prose p { color: var(--c-text-2); margin-bottom: 14px; text-align: justify; }
.about-intro .about-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.about-intro .about-qr img {
  width: 220px;
  height: auto;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}
.about-intro .about-qr p {
  color: var(--c-text-2);
  font-size: 14px;
  text-align: center;
  line-height: 1.6;
}

/* ---------- 关于我们：企业文化 ---------- */
.culture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.culture-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 34px 24px;
  text-align: center;
  transition: all .2s;
}
.culture-item:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--c-primary); }
.culture-item .ci-ic {
  width: 64px; height: 64px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: grid; place-items: center;
  font-size: 26px; font-weight: 800;
}
.culture-item h4 { font-size: 18px; margin-bottom: 10px; }
.culture-item p { color: var(--c-text-3); font-size: 13px; margin: 0; }

/* ---------- 关于我们：发展历程 ---------- */
.timeline-wrap { position: relative; max-width: 900px; margin: 0 auto; }
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px;
  width: 2px; background: var(--c-line);
}
.tl-item { position: relative; padding: 0 0 28px 0; }
.tl-item::before {
  content: ""; position: absolute; left: -25px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--c-primary); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--c-primary);
}
.tl-item .year { font-weight: 800; color: var(--c-primary); font-size: 20px; }
.tl-item h4 { font-size: 16px; margin: 4px 0; }
.tl-item p { color: var(--c-text-3); margin: 0; }

/* ---------- 关于我们：资质荣誉 ---------- */
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.honor-item { text-align: center; }
.honor-item .ph { aspect-ratio: 3/4; }
.honor-item p { margin-top: 12px; font-size: 14px; color: var(--c-text-2); }

/* ---------- 关于我们：组织架构 ---------- */
.structure-diagram {
  max-width: 900px;
  margin: 0 auto;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
}
.org-root {
  text-align: center;
  margin-bottom: 30px;
}
.org-box {
  display: inline-block;
  padding: 14px 36px;
  background: var(--c-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius);
}
.org-level {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}
.org-col {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
}
.org-col h5 {
  background: var(--c-bg-2);
  padding: 12px;
  font-size: 15px;
  text-align: center;
  border-bottom: 1px solid var(--c-line);
}
.org-col ul { padding: 12px; }
.org-col li {
  padding: 8px 0;
  text-align: center;
  color: var(--c-text-2);
  font-size: 13px;
  border-bottom: 1px dashed #eee;
}
.org-col li:last-child { border-bottom: none; }

/* ---------- 业务中心：左侧折叠菜单 + 右侧内容 ---------- */
.biz-layout { display: grid; grid-template-columns: 260px 1fr; gap: 30px; }

.biz-sidebar {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  align-self: start;
}
.biz-sidebar-head {
  background: var(--c-primary);
  color: #fff;
  padding: 28px 20px;
  text-align: center;
}
.biz-sidebar-head h3 { color: #fff; font-size: 22px; margin-bottom: 4px; }
.biz-sidebar-head span { font-size: 12px; opacity: .85; letter-spacing: 1px; }

.biz-menu .biz-cat {
  border-bottom: 1px solid var(--c-line);
}
.biz-menu .cat-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  font-size: 15px;
  color: var(--c-text);
  cursor: pointer;
  font-weight: 500;
}
.biz-menu .cat-toggle:hover { color: var(--c-primary); }
.biz-menu .cat-toggle .arrow { transition: transform .2s; font-size: 12px; }
.biz-menu .biz-cat.open .cat-toggle .arrow { transform: rotate(180deg); }
.biz-menu .cat-toggle.active,
.biz-menu .cat-toggle.active .arrow { color: var(--c-primary); }

.biz-menu .cat-items {
  display: none;
  background: #fafafa;
  border-top: 1px solid #f0f0f0;
}
.biz-menu .biz-cat.open .cat-items { display: block; }
.biz-menu .cat-items a {
  display: block;
  padding: 12px 18px 12px 32px;
  font-size: 14px;
  color: var(--c-text-2);
  border-bottom: 1px solid #f2f2f2;
}
.biz-menu .cat-items a:hover,
.biz-menu .cat-items a.active { color: var(--c-primary); background: #fff5f5; }

.biz-main { min-height: 400px; }
.biz-detail { display: none; }
.biz-detail.active { display: block; }
.biz-detail h2 { font-size: 24px; color: var(--c-primary); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--c-line); }
.biz-detail p { color: var(--c-text-2); margin-bottom: 14px; }
.biz-detail .tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.biz-detail .tags span {
  padding: 6px 14px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  border-radius: 999px;
  font-size: 13px;
}

/* ---------- 工程业绩 ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.proj-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all .2s;
}
.proj-item:hover { box-shadow: var(--shadow); }
.proj-item .ph { aspect-ratio: 16/10; border: none; border-radius: 0; border-bottom: 1px solid var(--c-line); }
.proj-item .proj-body { padding: 16px 18px; }
.proj-item .proj-cat {
  display: inline-block; font-size: 12px; color: var(--c-primary);
  background: var(--c-primary-light); padding: 2px 10px; border-radius: 999px; margin-bottom: 8px;
}
.proj-item h4 { font-size: 15px; margin-bottom: 6px; }
.proj-item .proj-meta { color: var(--c-text-3); font-size: 12px; }

/* ---------- 联系我们 ---------- */
.contact-info-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}
.contact-info-card {
  background: var(--c-bg-2);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: left;
  transition: all .2s;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.contact-info-card:hover { box-shadow: var(--shadow-sm); }
.contact-info-card h4 {
  font-size: 18px;
  color: var(--c-primary);
  margin-bottom: 10px;
}
.contact-info-card p { color: var(--c-text-2); margin: 0; font-size: 14px; }

/* 邮箱/电话卡 · 图标呼应 */
.ci-icon { border-top: 3px solid var(--c-gold); }
.ci-top { display: flex; align-items: center; gap: 12px; margin-bottom: 22px; }
.ci-badge {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--c-primary);
  display: flex; align-items: center; justify-content: center;
  flex: 0 0 auto;
}
.ci-head { display: flex; flex-direction: column; }
.ci-title { font-size: 16px; font-weight: 600; color: var(--c-primary); line-height: 1.3; }
.ci-sub { font-size: 12px; color: var(--c-text-3); letter-spacing: .5px; }
.ci-main {
  font-size: 20px; font-weight: 600; color: var(--c-text);
  line-height: 1.35; margin-bottom: 10px;
}
.ci-main.ci-mail { font-size: 17px; white-space: nowrap; }
.ci-main.ci-addr { font-size: 13px; font-weight: 400; color: var(--c-text-2); line-height: 1.6; }
.ci-desc { font-size: 13px; color: var(--c-text-2); margin: 0; }

/* 品牌创始人微信卡 */
.contact-wechat { text-align: center; }
.contact-wechat .wechat-qr {
  width: 138px; max-width: 100%; height: auto;
  border-radius: 8px; display: block; margin: 0 auto;
  border: 1px solid var(--c-line);
  box-shadow: 0 4px 14px rgba(11, 58, 94, .08);
}
.contact-wechat .wechat-tip { margin-top: 12px; color: var(--c-text-3); font-size: 13px; }

.contact-form-wrap {
  background: var(--c-bg-2);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}
.contact-form-wrap h3 { font-size: 22px; margin-bottom: 8px; }
.contact-form-wrap .tips { color: var(--c-text-3); font-size: 13px; margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 16px; }
.form-row.full { grid-column: 1 / -1; }
.form-row input, .form-row textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #ddd;
  border-radius: var(--radius); font-size: 14px; font-family: inherit; color: var(--c-text);
  background: #fff;
}
.form-row input:focus, .form-row textarea:focus { outline: none; border-color: var(--c-primary); }
.form-row textarea { min-height: 120px; resize: vertical; }
.form-ok {
  display: none;
  margin-top: 16px;
  color: var(--c-primary);
  font-weight: 700;
}

/* ---------- 数字名片 ---------- */
.card-search {
  max-width: 600px;
  margin: 0 auto 40px;
  display: flex;
  gap: 10px;
}
.card-search input {
  flex: 1;
  padding: 12px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-size: 14px;
}
.card-search button {
  padding: 12px 28px;
  background: var(--c-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
}
.card-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.card-item {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
  transition: all .2s;
}
.card-item:hover { box-shadow: var(--shadow); }
.card-item .ph { aspect-ratio: 3/4; border: none; border-radius: 0; border-bottom: 1px solid var(--c-line); }
.card-item .card-info { padding: 14px; }
.card-item .card-name { font-size: 16px; font-weight: 700; color: var(--c-text); margin-bottom: 4px; }
.card-item .card-title { font-size: 13px; color: var(--c-text-3); }

/* ---------- 通用占位页 ---------- */
.placeholder-page { padding: 80px 0; text-align: center; }
.placeholder-page h2 { font-size: 26px; color: var(--c-primary); margin-bottom: 12px; }
.placeholder-page p { color: var(--c-text-3); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .nav-left { padding-right: 70px; }
  .nav-right { padding-left: 70px; }
  .nav-item { padding: 0 14px; font-size: 14px; }
  .logo { gap: 8px; font-size: 18px; }
  .logo .logo-mark { width: 40px; height: 40px; font-size: 15px; }
}

@media (max-width: 920px) {
  .site-header .container { height: 70px; }
  .nav-left, .nav-right { display: none; }
  .nav-toggle { display: block; position: relative; z-index: 102; }
  .logo { position: static; transform: none; left: auto; top: auto; margin-right: auto; }
  .logo img { max-height: 48px; max-width: 160px; }

  .mobile-nav {
    display: none;
    position: fixed; inset: 70px 0 0 0;
    background: #fff;
    padding: 10px 20px 30px;
    overflow: auto;
    z-index: 99;
  }
  .mobile-nav.open { display: block; }
  .mobile-nav a {
    display: block;
    padding: 14px 0;
    font-size: 15px;
    color: var(--c-text);
    border-bottom: 1px solid var(--c-line);
  }

  .banner { height: 380px; }
  .banner .slide .cap h1 { font-size: 28px; }

  .about-intro,
  .biz-layout { grid-template-columns: 1fr; }
  .biz-sidebar { width: 100%; }
  .contact-info-cards,
  .proj-grid,
  .honor-grid,
  .culture-grid,
  .card-list { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .contact-info-cards,
  .proj-grid,
  .honor-grid,
  .culture-grid,
  .card-list,
  .org-level,
  .footer-top { grid-template-columns: 1fr; }
  .sub-nav-title { display: none; }
  .sub-nav-tabs { margin-left: 0; }
  .sub-nav-tabs a { padding: 0 16px; font-size: 14px; }
}