:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #16233d;
  background: #f5f7fb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at 88% 12%, #e5edff 0, transparent 32rem), #f5f7fb;
}

.page-shell {
  width: min(100% - 2.5rem, 1120px);
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 88px;
  border-bottom: 1px solid #d9e0ed;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 1.3rem;
  font-weight: 750;
  letter-spacing: -0.04em;
}

.brand-mark {
  position: relative;
  width: 1.65rem;
  height: 1.65rem;
  border: 3px solid #3159c8;
  border-radius: 50%;
  transform: rotate(-30deg) scaleX(1.2);
}

.brand-mark::after {
  position: absolute;
  top: -0.28rem;
  right: 0;
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: #3159c8;
  content: "";
}

.header-label, .section-count {
  color: #586783;
  font-size: 0.88rem;
}

.hero {
  max-width: 790px;
  padding-block: clamp(3.5rem, 8vw, 6.5rem) clamp(3.5rem, 7vw, 5.5rem);
}

.eyebrow, .section-kicker {
  margin: 0;
  color: #2851bc;
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 760px;
  margin-block: 1.1rem 1.4rem;
  font-size: clamp(2.6rem, 6.3vw, 5rem);
  font-weight: 750;
  letter-spacing: -0.065em;
  line-height: 1.06;
}

h1 span { color: #3159c8; }

.intro {
  max-width: 61ch;
  margin-bottom: 1.8rem;
  color: #43516b;
  font-size: clamp(1.05rem, 2.2vw, 1.18rem);
  line-height: 1.65;
}

.intro strong { color: #16233d; }

.notice {
  max-width: 61ch;
  margin-bottom: 0;
  padding: 0.85rem 1rem;
  border-left: 3px solid #3159c8;
  border-radius: 0 0.5rem 0.5rem 0;
  background: #e9efff;
  color: #253b66;
  line-height: 1.5;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

h2 {
  margin-block: 0.55rem 0;
  font-size: clamp(1.65rem, 3vw, 2rem);
  letter-spacing: -0.04em;
}

.section-count {
  margin-bottom: 0.2rem;
  white-space: nowrap;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16.5rem), 1fr));
  gap: 1rem;
}

.download-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 19.5rem;
  padding: 1.5rem;
  border: 1px solid #d9e0ed;
  border-radius: 1rem;
  background: #fff;
  box-shadow: 0 12px 30px rgb(24 47 91 / 5%);
}

.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 2.2rem;
}

.card-number {
  color: #66748f;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.file-badge {
  padding: 0.3rem 0.5rem;
  border: 1px solid #cbd7f8;
  border-radius: 0.35rem;
  background: #eff3ff;
  color: #2851bc;
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.06em;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1.45rem;
  letter-spacing: -0.035em;
}

.platform-note {
  margin-bottom: 1.5rem;
  color: #52617c;
  line-height: 1.55;
}

.card-bottom { margin-top: auto; }

.filename {
  margin-bottom: 0.75rem;
  color: #66748f;
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}

.download-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 3rem;
  padding: 0.75rem 0.9rem;
  border-radius: 0.55rem;
  background: #244cb7;
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.35;
  text-decoration: none;
  transition: background-color 160ms ease, transform 160ms ease;
}

.download-link span {
  flex: none;
  font-size: 1.2rem;
  line-height: 1;
}

.download-link:hover {
  background: #173994;
  transform: translateY(-2px);
}

.download-link:focus-visible {
  outline: 3px solid #12358d;
  outline-offset: 4px;
}

.site-footer {
  margin-top: clamp(3.5rem, 8vw, 6rem);
  padding-block: 1.5rem 2.5rem;
  border-top: 1px solid #d9e0ed;
  color: #5b6984;
  font-size: 0.85rem;
}

@media (max-width: 520px) {
  .page-shell { width: min(100% - 2rem, 1120px); }
  .site-header { min-height: 72px; }
  .header-label { max-width: 8rem; text-align: right; }
  .section-heading { align-items: start; flex-direction: column; }
  .download-card { min-height: 17rem; }
}

@media (prefers-reduced-motion: reduce) {
  .download-link { transition: none; }
  .download-link:hover { transform: none; }
}