:root {
  color: #0b1f3a;
  background: #ffffff;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --primary: #0b63e6;
  --primary-dark: #084db5;
  --ink: #0b1f3a;
  --muted: #5f6f84;
  --line: #dbe5f1;
  --soft: #f2f7fe;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { min-width: 320px; margin: 0; background: #fff; }
a { color: inherit; }
a:focus-visible, summary:focus-visible { outline: 3px solid rgba(11, 99, 230, .28); outline-offset: 3px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 250px 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 82px;
  padding: 0 max(28px, calc((100vw - 1240px) / 2));
  border-bottom: 1px solid rgba(219, 229, 241, .9);
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(14px);
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand img { width: 44px; height: 50px; object-fit: contain; }
.brand span { display: grid; }
.brand strong { font-family: "Songti SC", "Noto Serif SC", STSong, serif; font-size: 22px; }
.brand small { color: #315b92; font-size: 12px; }
.site-header nav { display: flex; justify-content: center; gap: 30px; }
.site-header nav a { color: #31445f; font-size: 15px; font-weight: 650; text-decoration: none; }
.site-header nav a:hover { color: var(--primary); }
.header-cta, .primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: #fff;
  background: var(--primary);
  font-weight: 750;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(11, 99, 230, .18);
}
.header-cta { min-height: 42px; padding: 0 18px; font-size: 14px; }
.primary-cta { min-height: 52px; padding: 0 24px; }
.header-cta:hover, .primary-cta:hover { background: var(--primary-dark); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr);
  align-items: center;
  gap: 70px;
  width: min(1240px, calc(100% - 56px));
  min-height: 610px;
  margin: 0 auto;
  padding: 84px 0;
}
.eyebrow { margin: 0 0 16px; color: var(--primary); font-size: 13px; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { max-width: 850px; margin: 0; font-size: clamp(42px, 5.4vw, 72px); line-height: 1.08; letter-spacing: -.045em; }
.hero__lead { max-width: 780px; margin: 28px 0 0; color: #455a75; font-size: 20px; line-height: 1.8; }
.hero__actions { display: flex; align-items: center; gap: 24px; margin-top: 38px; }
.text-link { color: var(--primary-dark); font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.hero__panel { position: relative; padding: 34px; overflow: hidden; border: 1px solid #cbdcf2; border-radius: 18px; background: linear-gradient(145deg, #f9fcff, #edf5ff); box-shadow: 0 22px 60px rgba(23, 65, 123, .1); }
.hero__panel::after { position: absolute; right: -65px; bottom: -65px; width: 190px; height: 190px; border-radius: 50%; content: ""; background: rgba(11, 99, 230, .09); }
.hero__panel > span { color: #61748d; font-size: 13px; font-weight: 750; }
.hero__panel ul { display: grid; gap: 20px; margin: 24px 0 0; padding: 0; list-style: none; }
.hero__panel li { position: relative; padding-left: 30px; color: #183a66; font-size: 17px; font-weight: 720; line-height: 1.5; }
.hero__panel li::before { position: absolute; top: 4px; left: 0; display: grid; width: 20px; height: 20px; border-radius: 50%; content: "✓"; color: #fff; background: var(--primary); font-size: 12px; place-items: center; }

.principle-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fbfdff; }
.principle-strip div { display: grid; gap: 5px; min-height: 96px; padding: 22px 40px; text-align: center; place-content: center; }
.principle-strip div + div { border-left: 1px solid var(--line); }
.principle-strip strong { font-size: 17px; }
.principle-strip span { color: var(--muted); font-size: 13px; }

.content-wrap { width: min(1000px, calc(100% - 48px)); margin: 0 auto; padding: 90px 0; }
.content-section { display: grid; grid-template-columns: 74px 1fr; gap: 30px; padding: 48px 0; border-top: 1px solid var(--line); }
.content-section__number { color: #9ab9df; font-size: 15px; font-weight: 800; }
.content-section h2, .faq h2, .final-cta h2 { margin: 0 0 24px; font-size: clamp(28px, 3vw, 40px); letter-spacing: -.025em; }
.content-section p, .faq details p { margin: 0; color: #445972; font-size: 17px; line-height: 1.9; }
.content-section p + p { margin-top: 18px; }

.faq { margin-top: 44px; padding: 54px; border-radius: 18px; background: var(--soft); }
.faq details { border-top: 1px solid #cfdded; }
.faq details:last-child { border-bottom: 1px solid #cfdded; }
.faq summary { padding: 22px 4px; color: #18375e; font-size: 17px; font-weight: 760; cursor: pointer; }
.faq details p { padding: 0 4px 22px; }
.final-cta { display: flex; align-items: center; justify-content: space-between; gap: 30px; margin-top: 64px; padding: 42px 48px; border-radius: 18px; color: #fff; background: #0d2c57; }
.final-cta .eyebrow { color: #81b7ff; }
.final-cta h2 { max-width: 580px; margin-bottom: 0; }
.related { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 42px; }
.related strong { margin-right: 6px; color: var(--muted); font-size: 13px; }
.related a { padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; color: #294d78; background: #fff; font-size: 13px; font-weight: 650; text-decoration: none; }
.related a:hover { border-color: #9bbff1; background: var(--soft); }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 30px max(24px, calc((100vw - 1000px) / 2)); border-top: 1px solid var(--line); color: #6b7b90; font-size: 13px; }
footer a { color: #315b92; text-decoration: none; }

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; min-height: 72px; padding: 0 20px; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; gap: 36px; min-height: 0; padding: 64px 0; }
  .hero__panel { max-width: 650px; }
}

@media (max-width: 640px) {
  .brand strong { font-size: 19px; }
  .brand small { display: none; }
  .header-cta { min-height: 38px; padding: 0 14px; }
  .hero { width: calc(100% - 32px); padding: 48px 0; }
  .hero h1 { font-size: 40px; }
  .hero__lead { font-size: 17px; }
  .hero__actions { align-items: stretch; flex-direction: column; }
  .text-link { text-align: center; }
  .principle-strip { grid-template-columns: 1fr; }
  .principle-strip div + div { border-top: 1px solid var(--line); border-left: 0; }
  .content-wrap { width: calc(100% - 32px); padding: 62px 0; }
  .content-section { grid-template-columns: 1fr; gap: 10px; padding: 38px 0; }
  .faq { padding: 34px 22px; }
  .final-cta { align-items: stretch; flex-direction: column; padding: 34px 24px; }
  footer { align-items: flex-start; flex-direction: column; }
}