:root {
  --navy: #0b2d4d;
  --blue: #1767a6;
  --light-blue: #eaf4fb;
  --orange: #f7931e;
  --ink: #1c2a38;
  --muted: #5e6c79;
  --line: #d8e2ea;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #f6f9fb;
  font-family: Inter, "Segoe UI", "Noto Sans", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.55;
}

a { color: inherit; }
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 92px;
  padding: 18px max(24px, calc((100vw - 1120px) / 2));
  color: var(--navy);
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 13px; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  color: var(--white);
  background: var(--blue);
  border: 4px solid #ffb04c;
  border-radius: 50%;
  font-weight: 800;
  letter-spacing: -.04em;
}
.brand strong { display: block; font-size: 1.2rem; line-height: 1.1; }
.brand small { display: block; margin-top: 4px; color: var(--muted); font-size: .82rem; }
.back-link { color: var(--blue); font-weight: 700; text-underline-offset: 4px; }

main { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.intro { padding: 68px 0 44px; }
.eyebrow { margin: 0 0 8px; color: var(--orange); font-size: .82rem; font-weight: 800; letter-spacing: .12em; }
h1, h2, h3 { margin-top: 0; color: var(--navy); line-height: 1.15; }
h1 { max-width: 720px; margin-bottom: 18px; font-size: clamp(2.35rem, 7vw, 4.2rem); letter-spacing: -.04em; }
.intro > p:not(.eyebrow) { max-width: 720px; margin: 0 0 28px; color: var(--muted); font-size: 1.12rem; }
.language-nav { display: flex; flex-wrap: wrap; gap: 12px; }
.language-nav a {
  min-width: 130px;
  padding: 12px 20px;
  color: var(--navy);
  background: var(--white);
  border: 2px solid var(--line);
  border-radius: 999px;
  font-weight: 750;
  text-align: center;
  text-decoration: none;
}
.language-nav a:hover, .language-nav a:focus-visible { border-color: var(--orange); outline: none; }

.language-section {
  margin: 0 0 28px;
  padding: 36px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 20px;
  scroll-margin-top: 20px;
}
.language-heading { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }
.language-heading h2 { margin-bottom: 2px; font-size: 1.75rem; }
.language-heading p { margin: 0; color: var(--muted); }
.language-code {
  display: grid;
  place-items: center;
  flex: 0 0 54px;
  height: 54px;
  color: var(--white);
  background: var(--navy);
  border-radius: 14px;
  font-size: .9rem;
  font-weight: 800;
  letter-spacing: .08em;
}
.document-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.document-card {
  display: flex;
  flex-direction: column;
  min-height: 270px;
  padding: 26px;
  background: linear-gradient(145deg, var(--light-blue), #fff 70%);
  border: 1px solid #cfe1ee;
  border-radius: 16px;
}
.document-type { color: var(--blue); font-size: .76rem; font-weight: 850; letter-spacing: .1em; }
.document-card h3 { margin: 13px 0 11px; font-size: 1.38rem; }
.document-card p { margin: 0 0 24px; color: var(--muted); }
.document-card a {
  align-self: flex-start;
  margin-top: auto;
  padding: 12px 17px;
  color: var(--white);
  background: var(--blue);
  border-radius: 10px;
  font-weight: 750;
  text-decoration: none;
}
.document-card a:hover, .document-card a:focus-visible { background: var(--navy); outline: 3px solid #ffd29a; outline-offset: 2px; }

.help {
  margin: 48px 0;
  padding: 36px;
  color: var(--white);
  background: var(--navy);
  border-top: 7px solid var(--orange);
  border-radius: 20px;
}
.help h2 { margin-bottom: 22px; color: var(--white); font-size: 2rem; }
.contact-links { display: flex; flex-wrap: wrap; gap: 12px; }
.contact-links a { padding: 11px 16px; background: rgba(255,255,255,.12); border-radius: 10px; font-weight: 700; text-decoration: none; }
.help > p:last-child { margin: 20px 0 0; color: #d9e8f3; }
footer { padding: 28px 24px 38px; color: var(--muted); text-align: center; font-size: .86rem; }

@media (max-width: 700px) {
  body { font-size: 17px; }
  .site-header { align-items: flex-start; padding: 16px 20px; }
  .brand small { display: none; }
  .back-link { max-width: 120px; text-align: right; }
  main { width: min(100% - 28px, 1120px); }
  .intro { padding: 44px 0 30px; }
  .language-nav a { flex: 1 1 30%; min-width: 95px; padding: 11px 12px; }
  .language-section, .help { padding: 24px 18px; border-radius: 16px; }
  .language-heading { align-items: flex-start; }
  .document-grid { grid-template-columns: 1fr; }
  .document-card { min-height: 0; padding: 22px; }
  .document-card a { width: 100%; text-align: center; }
  .contact-links { flex-direction: column; }
  .contact-links a { overflow-wrap: anywhere; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }