:root {
  --enterprise-ink: #10233a;
  --enterprise-navy: #0b1c31;
  --enterprise-blue: #124b8a;
  --enterprise-paper: #fff;
  --enterprise-mist: #f1f5f9;
  --enterprise-line: #d2dce7;
  --enterprise-gutter: clamp(16px, 3vw, 40px);
}
html { scroll-padding-top: 100px; }
body { font-family: system-ui, "Noto Sans SC", "Microsoft YaHei", sans-serif; }
.container { width: 100%; max-width: 1400px; padding-inline: var(--enterprise-gutter); box-sizing: border-box; }
.header { background: var(--enterprise-navy); border-bottom: 1px solid #33475e; box-shadow: none; }
.header .container { height: 76px; }
.header .nav-item > a, .header .nav-item > button, .header button.site-section-toggle,
.header button.site-menu-toggle, .header .lang-btn { color: #fff; }
.header .logo img { display: block; width: auto; height: 48px; }
.header .lang-btn {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; padding: 0; border-radius: 8px;
  background: #111520; border: 1px solid #1e293b;
}
.header .lang-btn:hover {
  background: rgba(56, 189, 248, 0.05); border-color: #38bdf8; color: #38bdf8;
}
.header .lang-btn svg { width: 20px; height: 20px; fill: currentColor; }
.header .lang-flag {
  width: 22px; height: 15px; object-fit: cover; border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.header .nav-item > a:hover { color: #b8d9ff; }
.header .dropdown-panel, .header .lang-dropdown { border: 1px solid var(--enterprise-line); border-radius: 0; }
.header :focus-visible, .footer :focus-visible, .enterprise-cta:focus-visible, .enterprise-toc a:focus-visible {
  outline: 2px solid #3c8ee8;
  outline-offset: 4px;
}
.footer { background: var(--enterprise-navy); border-top: 1px solid #33475e; box-shadow: none; }
.footer a { color: #d6e1ef; }
.footer a:hover { color: #fff; text-decoration: underline; }
body :is(.hero, .pdp-hero, .policy-hero, .faq-hero, .news-hero, .partner-hero,
  .guide-header-section) h1 { font-size: clamp(2rem, 4.4vw, 3.75rem); line-height: 1.12; }
body :is(h2.section-title, h2.step-title, .policy-wrapper h2, .enterprise-doc-body h2) {
  font-size: clamp(1.5rem, 2.6vw, 2.25rem); line-height: 1.24;
}
body :is(.feature-card, .solution-card, .doc-card, .enterprise-doc-body) h3 {
  font-size: clamp(1.125rem, 1.65vw, 1.5rem); line-height: 1.3;
}
body :is(.pdp-hero, .policy-hero, .faq-hero, .news-hero, .partner-hero) {
  background: var(--enterprise-navy);
  color: var(--enterprise-paper);
}
body :is(.solution-card, .product-row, .feature-row, .tech-showcase-row, .feature-card,
  .scenario-card, .doc-card, .news-card, .portfolio-card, .promo-card, .partner-card,
  .software-card, .tool-item-card) {
  border: 1px solid var(--enterprise-line);
  border-radius: 6px;
  box-shadow: none;
}
body :is(.solution-card, .feature-card, .scenario-card, .doc-card, .news-card, .portfolio-card,
  .promo-card, .partner-card, .software-card, .tool-item-card, .pdp-hero-img, .feature-visual img,
  .featured-img img, .news-card-img img):hover,
body :is(.feature-row, .featured-news, .news-card):hover img { transform: none; box-shadow: none; }
body .hero-image img { transform: none; }
body :is(.btn-primary, .btn-submit, .btn-download, .btn-verify, .btn-cta-primary,
  .btn-cta-blue):hover { transform: none; }
.enterprise-grid, .enterprise-doc-layout {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(16px, 2.3vw, 32px);
}
.enterprise-hero-grid > * { grid-column: 1 / -1; }
.enterprise-hero-grid { justify-items: center; }
.enterprise-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-block: 1.25rem; }
.enterprise-cta, a.btn-doc-download.enterprise-cta {
  display: inline-flex; align-items: center; justify-content: center; padding: 10px 18px;
  min-height: 44px; border: 1px solid var(--enterprise-blue); border-radius: 4px;
  background: var(--enterprise-blue); color: white; font-weight: 650;
  line-height: 1.35; text-decoration: none;
}
.enterprise-cta:hover { background: #0e3e75; color: #fff; }
.enterprise-cta--secondary { background: transparent; border-color: #a7c1de; color: white; }
.enterprise-cta--secondary:hover { background: #263e5a; }
.enterprise-summary {
  margin: 1.5rem auto 2rem; padding: 18px 22px;
  background: var(--enterprise-mist); color: var(--enterprise-ink);
  border: 1px solid var(--enterprise-line); border-inline-start: 4px solid var(--enterprise-blue);
}
.enterprise-summary h2 { font-size: 1.125rem; margin: 0 0 .5rem; }
.enterprise-summary p { margin: 0; line-height: 1.65; }
.enterprise-doc-layout { align-items: start; }
.enterprise-toc {
  grid-column: span 3; position: sticky; top: 100px; max-height: calc(100dvh - 120px);
  overflow: auto; padding: 14px; border: 1px solid var(--enterprise-line);
  background: var(--enterprise-paper); color: var(--enterprise-ink);
}
.enterprise-toc summary { cursor: pointer; font-weight: 700; }
.enterprise-toc ul { list-style: none; padding: 0; margin-block: .6rem 0; }
.enterprise-toc a { display: block; color: var(--enterprise-blue); padding: 5px 8px; border-inline-start: 2px solid transparent; }
.enterprise-toc .enterprise-toc-sub a { padding-inline-start: 20px; }
.enterprise-toc a[aria-current="location"] { background: var(--enterprise-mist); border-color: var(--enterprise-blue); font-weight: 650; }
.enterprise-doc-body { grid-column: span 9; min-width: 0; }
.enterprise-doc-body .container { padding-inline: 0; }
.enterprise-doc-body :is(h2, h3)[id] { scroll-margin-top: 12px; }
.enterprise-doc-body .guide-sidebar { position: static; display: block; margin-block: 1.5rem; }
@media (min-width: 1101px) and (hover: hover) and (pointer: fine) {
  .header .nav-menu:not(:has(.is-open)) .nav-item.has-dropdown:hover > .dropdown-panel {
    display: grid; visibility: visible; opacity: 1; transform: none;
  }
}
@media (max-width: 1100px) {
  .header .nav-menu { background: var(--enterprise-navy); }
  .enterprise-toc, .enterprise-doc-body { grid-column: 1 / -1; }
  .enterprise-toc { position: static; max-height: none; }
}
@media (prefers-reduced-motion: reduce) {
  .header *, .enterprise-cta, .hero-image img { transition: none; }
}