:root {
  --navy: #102c78;
  --blue: #173bc6;
  --ink: #172033;
  --muted: #5c6678;
  --line: #dce2ee;
  --surface: #ffffff;
  --soft: #f4f7fc;
  --shadow: 0 18px 45px rgba(22, 45, 96, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #eef2f8;
  font: 16px/1.7 Arial, Helvetica, sans-serif;
}
a { color: var(--blue); }
a:hover { color: #0b2078; }
.site-shell { min-height: 100vh; }
.topbar {
  background: var(--navy);
  color: #fff;
  font-size: .9rem;
}
.topbar-inner, .header-inner, .nav-inner, .content-wrap, .footer-inner {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}
.topbar-inner {
  display: flex;
  justify-content: flex-end;
  gap: 22px;
  padding: 8px 0;
}
.topbar a { color: #fff; text-decoration: none; }
.site-header { background: var(--surface); box-shadow: 0 3px 18px rgba(20, 34, 72, .08); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 22px 0;
}
.brand { display: inline-flex; align-items: center; gap: 14px; color: var(--ink); text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--blue), #6078e8);
  color: #fff;
  font-weight: 800;
  letter-spacing: .08em;
}
.brand-title { display: block; font-size: 1.25rem; font-weight: 800; line-height: 1.05; letter-spacing: .08em; }
.brand-subtitle { display: block; margin-top: 8px; color: var(--muted); font-size: .74rem; line-height: 1.1; letter-spacing: .14em; }
.header-contact { color: var(--muted); font-size: .92rem; text-align: right; }
.header-contact strong { color: var(--ink); }
.nav { background: #fff; border-top: 1px solid var(--line); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-toggle { display: none; border: 0; background: transparent; color: var(--navy); font-size: 1.5rem; padding: 12px 0; }
.nav-list { display: flex; flex-wrap: wrap; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-list a {
  display: block;
  color: var(--ink);
  padding: 13px 14px;
  font-size: .93rem;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 3px solid transparent;
}
.nav-list a:hover, .nav-list a[aria-current="page"] { color: var(--blue); border-bottom-color: var(--blue); }
.hero { background: linear-gradient(135deg, #102c78, #3155d6); color: #fff; }
.hero-inner { width: min(1180px, calc(100% - 36px)); margin: 0 auto; padding: 54px 0; }
.hero h1 { max-width: 760px; margin: 0 0 12px; font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.12; }
.hero p { max-width: 700px; margin: 0; font-size: 1.1rem; opacity: .92; }
.content-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: 34px; padding: 42px 0 70px; }
.content-card, .sidebar-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
.content-card { min-width: 0; padding: clamp(22px, 4vw, 48px); }
.content-card h1, .content-card h2, .content-card h3 { color: var(--navy); line-height: 1.25; }
.content-card h1 { margin-top: 0; font-size: clamp(1.8rem, 4vw, 2.6rem); }
.content-card h2 { margin-top: 2rem; font-size: 1.65rem; }
.content-card img { max-width: 100%; height: auto; border-radius: 8px; }
.content-card table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; }
.content-card th, .content-card td { border: 1px solid var(--line); padding: 9px 12px; }
.content-card blockquote { margin: 1.5rem 0; padding: 16px 20px; border-left: 4px solid var(--blue); background: var(--soft); }
.sidebar { display: grid; align-content: start; gap: 18px; }
.sidebar-card { padding: 22px; }
.sidebar-card h2 { margin: 0 0 12px; color: var(--navy); font-size: 1.1rem; }
.sidebar-card ul { margin: 0; padding-left: 20px; }
.sidebar-card a { text-decoration: none; }
.cta { margin-top: 24px; padding: 22px; border-radius: 12px; background: var(--soft); }
.button { display: inline-block; padding: 11px 18px; border-radius: 7px; background: var(--blue); color: #fff; font-weight: 700; text-decoration: none; }
.site-footer { background: #0e1c42; color: #d8e1ff; }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; padding: 42px 0; }
.site-footer h2 { color: #fff; font-size: 1rem; }
.site-footer a { color: #d8e1ff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.18); padding: 16px 18px; text-align: center; font-size: .85rem; }
.homepage .hero { background: #fff; color: var(--ink); }
.homepage .hero-inner { width: min(1180px, calc(100% - 36px)); padding: 0; }
.homepage img { display: block; width: 100%; height: auto; max-height: 350px; object-fit: cover; }

@media (max-width: 820px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 12px; }
  .header-contact { text-align: left; }
  .nav-inner { display: block; }
  .nav-toggle { display: block; }
  .nav-list { display: none; padding-bottom: 10px; }
  .nav-list.is-open { display: block; }
  .nav-list a { padding: 9px 0; border-bottom: 0; }
  .content-wrap { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}