:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  color: #17243b;
  background: #f5f8fc;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; }
a { color: #175db7; text-underline-offset: 0.2em; }
a:hover { color: #0d468d; }
a:focus-visible { outline: 3px solid #3988e8; outline-offset: 4px; border-radius: 3px; }

.shell { width: min(100% - 40px, 1080px); margin-inline: auto; }
.skip-link { position: absolute; top: -80px; left: 16px; z-index: 10; padding: 10px 14px; background: #fff; }
.skip-link:focus { top: 12px; }
.site-header { border-bottom: 1px solid #dbe5f0; background: rgba(255, 255, 255, 0.84); }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; color: inherit; font-size: 1.03rem; font-weight: 720; text-decoration: none; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 10px; background: #1765cb; color: #fff; font-size: 19px; line-height: 1; }
nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
nav a { color: #425674; text-decoration: none; font-size: 0.94rem; }
nav a[aria-current="page"] { color: #155bb5; font-weight: 700; }

.eyebrow { margin: 0 0 10px; color: #2169b8; font-size: 0.78rem; font-weight: 750; letter-spacing: 0.1em; }
.hero { max-width: 780px; padding: clamp(72px, 12vw, 144px) 0 104px; }
.hero h1, .document-heading h1 { margin: 0; font-size: clamp(2.5rem, 6vw, 4.5rem); line-height: 1.14; letter-spacing: -0.04em; }
.lead { max-width: 660px; margin: 24px 0 0; color: #52647e; font-size: clamp(1.05rem, 2vw, 1.2rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 46px; padding: 10px 18px; border-radius: 12px; font-weight: 650; text-decoration: none; }
.button.primary { background: #1765cb; color: #fff; }
.button.primary:hover { background: #0d50ac; }
.button.secondary { border: 1px solid #cbd9e9; color: #284363; background: #fff; }

.section { padding: 0 0 88px; }
.section-heading h2, .legal-callout h2 { margin: 0 0 26px; font-size: clamp(1.6rem, 3vw, 2.1rem); line-height: 1.25; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.feature-card { min-height: 205px; padding: 27px; border: 1px solid #dce6f0; border-radius: 20px; background: #fff; box-shadow: 0 14px 36px rgba(30, 75, 130, 0.04); }
.feature-icon { color: #3476c3; font-size: 0.88rem; font-weight: 750; }
.feature-card h3 { margin: 18px 0 8px; font-size: 1.14rem; }
.feature-card p { margin: 0; color: #5b6d85; font-size: 0.94rem; }
.legal-callout { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-bottom: 92px; padding: 34px; border: 1px solid #c9ddf5; border-radius: 22px; background: #eaf3ff; }
.legal-callout h2 { margin-bottom: 10px; }
.legal-callout p:last-child { margin: 0; color: #516780; }
.legal-links { display: grid; gap: 10px; min-width: 182px; }
.legal-links a { display: flex; justify-content: space-between; gap: 18px; padding: 10px 13px; border-radius: 10px; background: #fff; font-weight: 650; text-decoration: none; }

.document-page { max-width: 900px; padding: 72px 0 100px; }
.document-heading { padding-bottom: 32px; border-bottom: 1px solid #dbe5f0; }
.document-heading h1 { font-size: clamp(2.3rem, 5vw, 3.8rem); }
.document-heading p:last-child { max-width: 750px; margin: 20px 0 0; color: #485d77; }
.document-date { margin: 14px 0 0; color: #657890; font-size: 0.9rem; }
.document-toc { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: baseline; max-width: 760px; padding: 20px 0 4px; border-bottom: 1px solid #dbe5f0; font-size: 0.9rem; }
.document-toc p { width: 100%; margin: 0; color: #52647e; font-weight: 700; }
.document-toc a { text-decoration: none; }
.document-body { max-width: 760px; padding-top: 14px; }
.document-body section { padding-top: 28px; scroll-margin-top: 24px; }
.document-body h2 { margin: 0 0 12px; font-size: 1.25rem; line-height: 1.35; }
.document-body p { margin: 0 0 14px; color: #354b67; }
.document-body ul { margin: 0 0 16px; padding-left: 1.45em; color: #354b67; }
.document-body li { margin-bottom: 12px; }
.document-body strong { color: #17243b; }
.document-body code { font-size: 0.9em; overflow-wrap: anywhere; }

.site-footer { border-top: 1px solid #dbe5f0; background: #fff; }
.footer-inner { display: grid; justify-items: center; gap: 4px; padding: 26px 0 30px; text-align: center; font-size: 0.87rem; }
.footer-inner p { margin: 0; color: #5f7087; }
.filing-link { color: #52647e; }

@media (max-width: 700px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 10px; padding-block: 17px; }
  nav { gap: 8px 18px; }
  .hero { padding: 72px 0 88px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { min-height: 0; }
  .legal-callout { align-items: stretch; flex-direction: column; padding: 24px; }
  .legal-links { width: 100%; }
  .document-page { padding: 56px 0 80px; }
}

@media (prefers-color-scheme: dark) {
  :root { color: #e9f1fb; background: #111b2b; }
  a { color: #89baff; }
  a:hover { color: #b5d4ff; }
  .site-header, .site-footer { border-color: #2a3d56; background: #172235; }
  .brand { color: #eef5ff; }
  nav a, .lead, .feature-card p, .document-heading p:last-child, .document-toc p, .document-body p, .document-body ul, .footer-inner p, .filing-link { color: #bdcadc; }
  nav a[aria-current="page"], .eyebrow { color: #8cc1ff; }
  .button.secondary, .feature-card, .legal-links a { border-color: #304967; background: #1d2d43; color: #d8e8fa; }
  .legal-callout { border-color: #315277; background: #1a304b; }
  .legal-callout p:last-child, .document-date { color: #bdcadc; }
  .document-heading, .document-toc { border-color: #2a3d56; }
  .document-body strong { color: #e9f1fb; }
}