:root {
  color-scheme: light;
  --bg: #fafaf7;
  --surface: #fff;
  --ink: #17342e;
  --muted: #50645d;
  --teal: #0b5e55;
  --deep: #053e38;
  --orange: #c96526;
  --line: #dce5df;
  --soft: #eff5f1;
  --font-body: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-heading: 'Songti SC', 'Noto Serif SC', serif;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 100px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.8 var(--font-body); }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--teal); }
button, input { font: inherit; }
button, a, input { touch-action: manipulation; }
button { cursor: pointer; }
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, .brand, .footer-brand { font-family: var(--font-heading); }
h1, h2, h3 { line-height: 1.4; }
h1 { max-width: 22ch; font-size: clamp(2rem, 3.4vw, 3rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.45rem, 2.4vw, 1.9rem); }
h3 { font-size: 1.15rem; }
p { overflow-wrap: anywhere; }
.wrap { width: min(1200px, calc(100% - 64px)); margin-inline: auto; }
.narrow { max-width: 820px; }
.skip { position: fixed; z-index: 20; top: -100px; left: 16px; padding: 10px 14px; background: var(--surface); }
.skip:focus { top: 12px; }
.site-header { position: relative; z-index: 5; background: var(--surface); border-bottom: 1px solid var(--line); }
.header-row { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { flex: 0 0 auto; color: var(--deep); font-size: 1.35rem; font-weight: 700; }
#nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 28px); }
#nav a { padding: 10px 0; color: var(--muted); font-size: .9rem; }
#nav a:hover, #nav a[aria-current="page"] { color: var(--teal); }
#nav a[aria-current="page"] { box-shadow: inset 0 -2px var(--orange); }
.menu { display: none; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--teal); padding: 8px 13px; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-block: 17px; color: var(--muted); font-size: .82rem; }
.crumb-sep { color: var(--orange); }
.eyebrow { margin-bottom: 12px; color: var(--orange); font-size: .82rem; font-weight: 700; letter-spacing: .04em; }
.hero { background: var(--deep); color: #fff; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); align-items: center; gap: clamp(34px, 6vw, 84px); padding-block: clamp(52px, 7vw, 88px); }
.hero h1 { color: #fff; }
.hero .entity-answer { margin-top: 22px; color: #e3eee9; }
.hero-desc { max-width: 650px; margin-top: 14px; color: #d0e0d9; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; border: 1px solid var(--teal); border-radius: 6px; padding: 9px 17px; background: var(--teal); color: #fff; font-weight: 650; }
.button:hover { background: var(--deep); color: #fff; }
.button.orange { border-color: var(--orange); background: var(--orange); }
.button.orange:hover { background: #a84c16; }
.hero .text-link { color: #fff; }
.hero-media { max-width: 500px; justify-self: end; }
.hero-media img { width: 100%; max-height: 360px; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 10px; }
figcaption { margin-top: 8px; color: var(--muted); font-size: .78rem; }
.hero figcaption { color: #d0e0d9; }
.answer { max-width: 78ch; margin-top: 12px; color: var(--teal); font-weight: 650; }
.page-head { padding-block: 30px 40px; background: var(--soft); border-bottom: 1px solid var(--line); }
.page-head h1 { margin-top: 4px; }
.section { padding-block: clamp(42px, 6vw, 72px); }
.section + .section { border-top: 1px solid var(--line); }
.section-soft { background: var(--soft); }
.section h2 { margin-bottom: 20px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.section-heading p { margin-top: 6px; color: var(--muted); }
.section-heading > a, .text-link, .read { color: var(--teal); font-size: .9rem; font-weight: 650; }
.category-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-block: 1px solid var(--line); }
.category { display: block; min-width: 0; padding: 22px 22px 26px; }
.category:first-child { padding-left: 0; }
.category + .category { border-left: 1px solid var(--line); }
.category h3 { margin-top: 8px; }
.category p { margin-top: 10px; color: var(--muted); font-size: .92rem; }
.category-index { color: var(--orange); font-size: .8rem; }
.category .read { display: block; margin-top: 16px; }
.category:hover h3, .news-card h3 a:hover { color: var(--orange); }
.product-row { scroll-margin-top: 100px; }
.facts-table { width: 100%; border-collapse: collapse; margin-top: 12px; background: var(--surface); }
.facts-table th, .facts-table td { border-bottom: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
.facts-table th { width: 31%; color: var(--muted); font-weight: 600; }
.plain-list, .capability-list, .qualification-list { margin: 0; padding-left: 1.25rem; }
.plain-list li, .capability-list > li, .qualification-list > li { padding: 11px 0; }
.capability-list h2, .qualification-list h2 { margin-bottom: 6px; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px; }
.two-col h2 { margin-bottom: 12px; }
.faq-section { background: var(--surface); }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { position: relative; cursor: pointer; list-style: none; padding: 16px 34px 16px 0; font-weight: 650; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 4px; color: var(--orange); font-size: 1.3rem; line-height: 1.4; }
.faq-item[open] summary::after { content: '−'; }
.faq-answer { padding: 0 20px 18px 0; color: var(--muted); }
.source-note { margin-top: 6px; color: var(--muted); font-size: .82rem; }
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.search-item { min-width: 0; border-bottom: 1px solid var(--line); }
.news-card { height: 100%; }
.news-card h3 { margin-top: 9px; }
.news-card > .article-thumb img, .article-thumb img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 6px; }
.news-content { padding: 14px 0 22px; }
.news-content > p:not(.meta) { margin-top: 8px; color: var(--muted); font-size: .9rem; }
.meta { margin-top: 7px; color: var(--muted); font-size: .8rem; }
.news-content .read { display: inline-block; margin-top: 12px; }
.search { display: flex; align-items: center; gap: 18px; margin-bottom: 12px; }
.search label { font-weight: 650; }
.search > div { display: flex; flex: 1; max-width: 650px; gap: 8px; }
.search input { width: 100%; min-width: 0; border: 1px solid #a9bdb2; border-radius: 6px; padding: 9px 13px; background: #fff; color: var(--ink); }
.result { margin-bottom: 22px; color: var(--muted); font-size: .86rem; }
.search-item[hidden], [hidden] { display: none !important; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 20px; padding-top: 30px; }
.pagination button { border: 1px solid var(--line); border-radius: 6px; padding: 8px 14px; background: #fff; color: var(--teal); }
.pagination button:disabled { color: #87968e; cursor: default; }
.prose { padding-block: 26px 56px; color: #30463d; font-size: 1.03rem; line-height: 2; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 { margin-top: 2em; color: var(--ink); font-size: 1.55rem; }
.prose h3 { margin-top: 1.7em; color: var(--ink); font-size: 1.25rem; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose blockquote { margin-left: 0; border-left: 3px solid var(--teal); padding-left: 20px; color: var(--muted); }
.prose a { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; }
.prose table { display: block; width: 100%; overflow-x: auto; border-collapse: collapse; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.prose img { max-height: 620px; width: auto; margin-inline: auto; object-fit: contain; }
.article-intro { padding-block: 30px 18px; }
.article-intro h1 { max-width: 30ch; }
.article-summary { margin-top: 16px; font-size: 1.05rem; }
.article-cover { width: min(100% - 64px, 1040px); max-height: 480px; margin: 24px auto 6px; object-fit: cover; border-radius: 8px; }
.article-cover figcaption { text-align: center; }
.content-image { margin-block: 18px; }
.footer-anchor { border-top: 1px solid #ffffff2b; padding-block: 18px 28px; }
.site-footer { background: var(--deep); color: #d8e8e0; }
.footer-grid { display: flex; align-items: start; justify-content: space-between; gap: 32px; padding-block: 32px 22px; }
.footer-brand { color: #fff; font-size: 1.35rem; font-weight: 700; }
.footer-legal, .footer-contact { margin-top: 5px; font-size: .88rem; }
.footer-anchor .entity-anchor { max-width: 100ch; color: #e3eee9; font-size: .88rem; }
.footer-contact a { color: #fff; }
.contact-boundary { border-left: 3px solid var(--orange); padding: 12px 16px; color: var(--muted); background: var(--soft); }
.redirect-page { padding-block: 56px; }
.redirect-page h1 { margin-bottom: 12px; }
@media (max-width: 960px) {
  .wrap { width: min(100% - 44px, 800px); }
  .header-row { gap: 16px; }
  #nav { gap: 14px; }
  #nav a { font-size: .83rem; }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .category:nth-child(4) { border-top: 1px solid var(--line); }
  .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .wrap { width: calc(100% - 40px); }
  .header-row { min-height: 68px; flex-wrap: wrap; justify-content: space-between; }
  .brand { max-width: calc(100% - 92px); font-size: 1.15rem; }
  .menu { display: block; }
  #nav { display: none; width: 100%; flex-direction: column; align-items: stretch; gap: 0; padding-bottom: 12px; }
  #nav.open { display: flex; }
  #nav a { border-top: 1px solid var(--line); padding: 10px 2px; font-size: .95rem; }
  #nav a[aria-current="page"] { box-shadow: none; color: var(--orange); }
  .breadcrumb { padding-block: 12px; font-size: .75rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 25px; padding-block: 40px; }
  .hero h1 { font-size: clamp(1.9rem, 8vw, 2.5rem); }
  .hero .entity-answer, .hero-desc { font-size: .92rem; }
  .hero-media { width: 100%; justify-self: stretch; }
  .hero-media img { max-height: 280px; aspect-ratio: 16 / 10; }
  .hero-actions { gap: 16px; margin-top: 22px; }
  .page-head { padding-block: 24px 30px; }
  .section { padding-block: 40px; }
  .section-heading { align-items: start; }
  .section-heading h2 { font-size: 1.4rem; }
  .category { padding: 18px 14px 20px; }
  .category:first-child, .category:nth-child(3) { padding-left: 0; }
  .category:nth-child(2), .category:nth-child(4) { padding-right: 0; }
  .category h3 { font-size: 1.05rem; }
  .category p { font-size: .84rem; }
  .facts-table th, .facts-table td { padding: 9px 8px; font-size: .9rem; }
  .facts-table th { width: 36%; }
  .two-col { grid-template-columns: 1fr; gap: 24px; }
  .news-grid { grid-template-columns: 1fr; gap: 20px; }
  .search { display: block; }
  .search label { display: block; margin-bottom: 7px; }
  .search > div { max-width: none; }
  .pagination { gap: 12px; font-size: .85rem; }
  .pagination button { padding: 8px 10px; }
  .article-intro { padding-block: 24px 10px; }
  .article-intro h1 { font-size: 1.8rem; }
  .article-cover { width: calc(100% - 40px); max-height: 340px; margin-top: 20px; }
  .prose { padding-block: 20px 42px; font-size: .98rem; }
  .footer-grid { flex-direction: column; gap: 16px; padding-block: 25px 18px; }
  .footer-anchor { padding-block: 14px 22px; }
}