:root {
  --ink: #1d2b34;
  --muted: #657078;
  --accent: #b32d2d;
  --accent-dark: #8b2020;
  --line: #e3e6e6;
  --paper: #f4f6f5;
  --navy: #142d3c;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; color: var(--ink); background: #fff; font: 16px/1.8 "Microsoft YaHei", "PingFang SC", system-ui, sans-serif; }
button, input, select { font: inherit; }
button, summary, select { cursor: pointer; }
a { color: inherit; text-decoration: none; }
a, button, summary, input, select { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #b96513; outline-offset: 5px; }
img, video { display: block; max-width: 100%; height: auto; }
button { color: inherit; }
button:disabled { cursor: default; }
[hidden] { display: none !important; }
h1, h2, h3, p, dl { margin: 0; }
h1, h2, h3 { line-height: 1.45; font-weight: 600; overflow-wrap: anywhere; }
.container { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 24px; z-index: 100; padding: 12px 20px; color: #fff; background: var(--navy); }
.skip-link:focus { top: 8px; }
.site-header { position: sticky; top: 0; z-index: 20; background: #fffffff5; border-bottom: 1px solid var(--line); }
.header-inner { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { flex-shrink: 0; }
.brand img { width: 208px; height: auto; }
.site-nav { display: flex; align-items: center; gap: 34px; font-size: 14px; font-weight: 500; }
.site-nav > a, .project-menu > summary { padding: 28px 0; white-space: nowrap; }
.site-nav a:hover, .site-nav [aria-current="page"], .project-menu[data-current] summary { color: var(--accent); }
.site-nav > a[aria-current="page"] { box-shadow: inset 0 -3px var(--accent); }
.site-nav .contact-link { padding: 10px 17px; border: 1px solid var(--line); }
.contact-link span { margin-left: 16px; }
.menu-toggle { display: none; padding: 6px 12px; border: 1px solid var(--line); background: #fff; }
.project-menu { position: relative; }
.project-menu summary { display: flex; align-items: center; gap: 9px; list-style: none; }
.project-menu summary::-webkit-details-marker { display: none; }
.project-dropdown { position: absolute; right: -30px; top: 100%; width: 340px; padding: 12px; background: #fff; border: 1px solid var(--line); box-shadow: 0 16px 32px #142d3c16; }
.project-dropdown a { display: block; padding: 12px; white-space: normal; }
.project-dropdown a:hover { background: var(--paper); }
.hero { min-height: 600px; position: relative; isolation: isolate; display: grid; align-content: center; color: #fff; background: var(--navy); overflow: hidden; }
.hero-image { position: absolute; z-index: -2; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(90deg, #0a253de8, #1639508c 48%, #142d3c20); }
.hero-content { padding-block: 95px 125px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 600; letter-spacing: .13em; line-height: 1.8; }
.hero .eyebrow { color: #e2ceaa; margin-bottom: 24px; letter-spacing: .22em; }
.hero h1 { font-size: clamp(36px, 4.2vw, 60px); letter-spacing: .06em; line-height: 1.5; }
.hero-content > p:not(.eyebrow) { margin-top: 22px; color: #e8edf0; font-size: 16px; line-height: 2; }
.hero .button { margin-top: 34px; }
.hero-bottom { position: absolute; inset-inline: 0; bottom: 25px; display: flex; justify-content: space-between; border-top: 1px solid #ffffff40; padding-top: 20px; font-size: 12px; letter-spacing: .12em; }
.hero-bottom a span { margin-left: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 36px; padding: 12px 24px; border: 1px solid var(--accent); background: var(--accent); color: #fff; font-size: 14px; transition: background .2s; }
.button:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.button-light { color: var(--ink); background: #fff; border-color: #fff; }
.button-light:hover { color: #fff; }
.section { padding-block: 88px; }
.section-tinted { background: var(--paper); }
.section h2 { font-size: clamp(26px, 2.8vw, 36px); letter-spacing: .02em; }
.section .eyebrow + h2 { margin-top: 14px; }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; }
.about-copy > p { color: var(--muted); margin-bottom: 20px; }
.about-copy > .lead { font-size: 19px; color: var(--ink); }
.text-link { display: inline-flex; align-items: center; gap: 24px; font-size: 14px; font-weight: 500; color: var(--accent); }
a.text-link:hover { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 5px; }
.company-facts { margin-top: 34px; padding-top: 28px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; }
.company-facts dt { font-size: 25px; font-weight: 600; }
.company-facts dt span { font-size: 13px; font-weight: 400; }
.company-facts dd { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.section-header { display: flex; align-items: end; justify-content: space-between; gap: 36px; margin-bottom: 38px; }
.section-header > p { color: var(--muted); font-size: 14px; }
.project-grid, .news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.project-card { background: #fff; }
.project-card > a, .news-card > a { display: flex; flex-direction: column; height: 100%; }
.project-image { position: relative; overflow: hidden; aspect-ratio: 1.6; background: #e6e9e7; }
.project-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.project-image > span { position: absolute; bottom: 0; left: 0; padding: 5px 18px; font-size: 20px; color: #fff; background: var(--accent); }
.project-card:hover img, .news-card:hover img { transform: scale(1.035); }
.project-body { display: flex; flex: 1; flex-direction: column; padding: 28px; }
.project-body h3 { margin-top: 9px; font-size: 20px; }
.project-body > p:not(.eyebrow) { color: var(--muted); font-size: 14px; margin: 18px 0 24px; }
.project-body .text-link { margin-top: auto; }
.news-card { min-width: 0; border: 1px solid var(--line); background: #fff; transition: border-color .2s; }
.news-card:hover { border-color: var(--accent); }
.news-card-image { aspect-ratio: 1.8; overflow: hidden; background: var(--paper); }
.news-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s; }
.news-card-placeholder { display: grid; place-items: center; color: #8c999c; letter-spacing: .15em; }
.news-card-body { display: flex; flex: 1; flex-direction: column; padding: 26px; }
.news-card time { font-size: 12px; color: var(--muted); letter-spacing: .06em; }
.news-card h3 { margin-top: 12px; font-size: 18px; }
.news-card-body > p { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 3; overflow: hidden; margin: 14px 0 22px; color: var(--muted); font-size: 13px; }
.news-card .text-link { margin-top: auto; }
.contact-banner { padding-block: 44px; color: #fff; background: var(--accent); }
.contact-banner .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.contact-banner .eyebrow { color: #f0cece; }
.contact-banner h2 { margin-top: 8px; font-size: 28px; }
.site-footer { padding-top: 60px; color: #c7d0d4; background: #14252f; font-size: 13px; scroll-margin-top: 88px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr 1.2fr auto; gap: 46px; padding-bottom: 46px; }
.footer-brand img { width: 190px; height: auto; margin-bottom: 20px; }
.footer-brand p { font-size: 12px; margin-top: 7px; }
.site-footer h2 { color: #fff; margin-bottom: 20px; font-size: 15px; }
.site-footer nav { display: flex; flex-direction: column; gap: 10px; }
.site-footer address { font-style: normal; line-height: 2.3; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-qr { text-align: center; }
.footer-qr img { margin-bottom: 8px; }
.footer-bottom { border-top: 1px solid #ffffff20; padding-block: 20px; display: flex; justify-content: space-between; gap: 20px; font-size: 12px; }
.page-heading { padding-block: 66px; background: var(--paper); border-bottom: 1px solid var(--line); }
.page-heading h1 { font-size: clamp(28px, 3.4vw, 44px); margin-top: 12px; max-width: 950px; }
.page-subtitle { margin-top: 14px; color: var(--muted); font-size: 14px; }
.reading-layout { max-width: 1000px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--muted); margin-bottom: 38px; }
.breadcrumb a:hover { color: var(--accent); }
.prose { font-size: 17px; line-height: 2; overflow-wrap: anywhere; }
.prose p { margin-bottom: 1.5em; }
.prose h2, .prose h3, .prose h4, .prose h5, .prose h6 { font-size: 22px; margin: 1.8em 0 .8em; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.prose img { margin: 30px auto; max-height: 900px; object-fit: contain; }
.prose video { margin: 30px auto; width: 100%; max-height: 650px; background: #101010; }
.prose table { width: 100%; table-layout: fixed; border-collapse: collapse; margin-block: 24px; font-size: 14px; }
.prose th, .prose td { border: 1px solid #cbd1d3; padding: 10px; }
.prose th { background: var(--paper); }
.related-projects { border-top: 1px solid var(--line); margin-top: 50px; padding-top: 30px; }
.related-projects h2 { font-size: 20px; margin-bottom: 18px; }
.related-projects a { display: block; padding: 12px 0; color: var(--accent); }
.article-layout { max-width: 900px; padding-block: 40px 80px; }
.article-header { padding: 12px 0 34px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.article-header h1 { margin: 16px 0 24px; font-size: clamp(26px, 3vw, 36px); line-height: 1.6; }
.article-header time { font-size: 13px; color: var(--muted); }
.article-return { padding-block: 30px; border-bottom: 1px solid var(--line); }
.article-adjacent { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; padding-top: 30px; }
.article-adjacent a { display: flex; align-items: start; flex-direction: column; gap: 10px; }
.article-adjacent a > span:first-child { color: var(--muted); font-size: 12px; }
.article-adjacent strong { font-size: 15px; font-weight: 500; }
.article-adjacent a:hover strong { color: var(--accent); }
.news-section { padding-top: 44px; }
.news-filters { display: flex; align-items: end; gap: 20px; padding: 24px; margin-bottom: 40px; background: var(--paper); }
.news-filters label { display: block; font-size: 12px; margin-bottom: 7px; color: var(--muted); }
.search-field { flex: 1; }
.news-filters input, .news-filters select { width: 100%; min-height: 46px; padding: 9px 14px; background: #fff; border: 1px solid #cbd1d3; border-radius: 0; color: var(--ink); }
.news-filters select { min-width: 150px; }
.reset-button { min-height: 46px; border: 0; background: transparent; padding: 8px; text-decoration: underline; color: var(--muted); font-size: 14px; }
.news-results-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 24px; }
.news-results-header h2 { font-size: 21px; }
.news-results-header p { font-size: 13px; color: var(--muted); }
.pagination { margin-top: 46px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.pagination button { min-width: 42px; min-height: 42px; padding: 8px 12px; background: #fff; border: 1px solid var(--line); font-size: 13px; }
.pagination button[aria-current] { background: var(--accent); border-color: var(--accent); color: #fff; }
.pagination button:disabled { color: #9ba4a8; background: var(--paper); }
.empty-state { padding: 60px 20px; text-align: center; background: var(--paper); }
.notice { margin-top: 24px; color: var(--muted); }
@media (min-width: 1600px) {
  .hero { min-height: 680px; }
}
@media (max-width: 1100px) {
  .container { width: calc(100% - 64px); }
  .site-nav { gap: 22px; }
  .brand img { width: 180px; }
  .about-grid { gap: 44px; }
  .footer-grid { gap: 24px; }
  .project-body, .news-card-body { padding: 22px; }
  .project-grid, .news-grid { gap: 20px; }
}
@media (max-width: 800px) {
  html { scroll-padding-top: 80px; }
  .container { width: calc(100% - 40px); }
  .header-inner { flex-wrap: wrap; gap: 0; min-height: 72px; }
  .brand img { width: 172px; }
  .has-js .menu-toggle { display: block; }
  .site-nav { width: 100%; flex-direction: column; align-items: stretch; gap: 0; padding-block: 10px 20px; }
  .has-js .site-nav:not(.is-open) { display: none; }
  .site-nav > a, .project-menu > summary { display: block; padding: 12px 8px; }
  .site-nav > a[aria-current="page"] { box-shadow: none; background: var(--paper); }
  .site-nav .contact-link { margin-top: 8px; padding: 10px; }
  .project-dropdown { position: static; width: 100%; box-shadow: none; border: 0; background: var(--paper); font-size: 13px; }
  .hero { min-height: 550px; }
  .hero-content { padding-block: 72px 110px; }
  .hero::before { background: linear-gradient(90deg, #0a253de8, #16395070); }
  .section { padding-block: 56px; }
  .about-grid { grid-template-columns: 1fr; gap: 26px; }
  .about-copy > .lead { font-size: 17px; }
  .section-header { align-items: start; flex-direction: column; gap: 20px; margin-bottom: 28px; }
  .project-grid, .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .project-grid .project-card:last-child, .home-page .news-card:last-child { grid-column: 1 / -1; }
  .project-grid .project-card:last-child .project-image { aspect-ratio: 2.4; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-qr { text-align: left; }
  .page-heading { padding-block: 44px; }
  .article-layout { padding-block: 28px 50px; }
  .news-filters { flex-wrap: wrap; gap: 14px; padding: 18px; }
  .search-field { flex-basis: 100%; }
  .news-filters > div:nth-child(2) { flex: 1; }
}
@media (max-width: 520px) {
  .hero { min-height: 530px; }
  .hero h1 { font-size: 35px; }
  .hero-content > p:not(.eyebrow) { font-size: 14px; }
  .hero-bottom { font-size: 10px; letter-spacing: .06em; }
  .hero-bottom a span { margin-left: 10px; }
  .company-facts { gap: 10px; }
  .company-facts dt { font-size: 22px; }
  .company-facts dd { font-size: 11px; }
  .project-grid, .news-grid { grid-template-columns: 1fr; }
  .project-grid .project-card:last-child .project-image { aspect-ratio: 1.6; }
  .home-page .news-card:last-child, .project-grid .project-card:last-child { grid-column: auto; }
  .news-card-image { aspect-ratio: 1.9; }
  .contact-banner .container { align-items: start; flex-direction: column; gap: 24px; }
  .contact-banner h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 10px; }
  .site-footer { padding-top: 40px; }
  .prose { font-size: 16px; }
  .prose table { font-size: 12px; }
  .prose td, .prose th { padding: 5px; }
  .article-adjacent { grid-template-columns: 1fr; }
  .news-results-header { align-items: start; flex-direction: column; gap: 8px; }
  .news-filters select { min-width: 0; }
  .news-filters .button { padding-inline: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}
@media print {
  .site-header, .site-footer, .article-adjacent, .article-return, .breadcrumb, .skip-link { display: none; }
  .container { width: 100%; }
  .article-layout { padding: 0; }
  .article-content { font-size: 11pt; }
}