:root {
  --blue: #174ea6;
  --blue-dark: #0f2a61;
  --blue-soft: #eef5ff;
  --green: #0d6b24;
  --green-soft: #f3fff5;
  --gold: #a86b00;
  --text: #111827;
  --muted: #475569;
  --border: #d9e4f2;
  --panel: rgba(255, 255, 255, 0.88);
  --shadow: 0 22px 70px rgba(15, 23, 42, 0.08);
  --radius: 16px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background:
    radial-gradient(820px 380px at 56% 14%, rgba(226, 232, 240, 0.85), transparent 62%),
    radial-gradient(560px 260px at 91% 4%, rgba(226, 232, 240, 0.78), transparent 58%),
    radial-gradient(620px 320px at 88% 54%, rgba(236, 253, 245, 0.82), transparent 60%),
    #ffffff;
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

.page-shell,
footer {
  width: min(1480px, calc(100% - 44px));
  margin: 0 auto;
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(430px, 0.78fr) minmax(650px, 1.22fr);
  gap: 22px;
  align-items: center;
  padding: clamp(28px, 4vw, 54px) 20px 28px;
}

.hero-copy { padding-left: 4px; }

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

h1 {
  color: var(--blue-dark);
  font-size: clamp(3rem, 5.4vw, 4.9rem);
  font-weight: 850;
}

h2 {
  color: #12411f;
  font-size: clamp(1.8rem, 3vw, 2.25rem);
  font-weight: 820;
}

.venue {
  margin: 10px 0 22px;
  color: #1f5fbd;
  font-size: clamp(1.25rem, 2.1vw, 1.85rem);
  font-weight: 750;
}

.lead {
  max-width: 640px;
  margin: 0 0 24px;
  color: #000;
  font-size: clamp(1.02rem, 1.45vw, 1.22rem);
  line-height: 1.6;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 600px;
  margin: 0 0 26px;
}

.button-grid a {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 8px 14px;
  color: var(--blue);
  border: 1.5px solid #8bb2f2;
  border-radius: 6px;
  background: rgba(255,255,255,0.78);
  font-weight: 760;
  box-shadow: 0 7px 22px rgba(15, 23, 42, 0.04);
}

.button-grid a.dark { color: #111827; border-color: #111827; }
.button-grid a.green { color: var(--green); border-color: #6bbe80; }
.button-grid a.gold { color: var(--gold); border-color: #d8a646; }
.button-grid a:hover { transform: translateY(-1px); text-decoration: none; }

.why-box {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: flex-start;
  max-width: 620px;
  padding: 14px 18px;
  border: 1.6px solid #b9d2f7;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(246, 250, 255, 0.92), rgba(255, 255, 255, 0.86));
}

.why-box strong {
  color: #111827;
  display: block;
  font-size: 1.02rem;
}

.why-box p {
  margin: 2px 0 0;
  color: #0f172a;
  font-size: 1rem;
  line-height: 1.5;
}

.shield {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 2px solid var(--blue);
  color: var(--blue);
  border-radius: 8px 8px 14px 14px;
  font-size: 1rem;
  font-weight: 900;
}

.hero-figure {
  margin: 0;
  min-width: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  display: block;
}

.application-card {
  margin: 8px 8px 0;
  padding: 24px 24px 22px;
  background: linear-gradient(135deg, rgba(250, 255, 251, 0.94), rgba(255, 255, 255, 0.88));
  border: 1.5px solid #b9e8c2;
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.section-heading {
  max-width: 760px;
  margin: 0 0 16px;
}

.section-heading p:not(.eyebrow) {
  margin: 10px 0 0;
  color: #111827;
  font-size: 1.04rem;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 850;
}

.application-diagram {
  width: 100%;
  display: block;
}

.artifact-strip {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 8px 32px;
  padding: 10px 52px;
  border: 1.5px solid #efdca8;
  border-radius: 6px;
  background: #fffdf4;
  font-size: 1.04rem;
}

.artifact-strip span {
  font-size: 1.8rem;
  color: #111827;
}

.artifact-strip p { margin: 0; }

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin: 22px 8px;
}

.content-card {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 16px 44px rgba(15, 23, 42, 0.06);
}

.content-card p {
  margin: 12px 0 0;
  color: var(--muted);
}

.content-card ul {
  margin: 16px 0 0;
  padding-left: 22px;
  color: var(--muted);
}

.content-card li { margin: 8px 0; }

code {
  font-family: var(--mono);
  font-size: 0.94em;
  background: #f1f5f9;
  color: #0f172a;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
  padding: 0.05rem 0.24rem;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pill-row span {
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid #b9d2f7;
  color: var(--blue-dark);
  background: var(--blue-soft);
  font-weight: 720;
}

.repo-list {
  display: grid;
  gap: 18px;
  margin-top: 16px;
}

.repo-list p { margin-top: 6px; }

pre {
  overflow-x: auto;
  margin: 16px 0 0;
  padding: 18px;
  border-radius: 12px;
  border: 1px solid #dbe5f2;
  background: #0f172a;
  color: #e5e7eb;
}

pre code {
  padding: 0;
  border: none;
  background: transparent;
  color: inherit;
}

footer {
  padding: 18px 8px 30px;
  color: var(--muted);
  text-align: center;
}

footer p { margin: 0; }

@media (max-width: 1180px) {
  .hero-card {
    grid-template-columns: 1fr;
    padding-top: 34px;
  }

  .hero-copy,
  .lead,
  .button-grid,
  .why-box { max-width: none; }
}

@media (max-width: 760px) {
  .page-shell,
  footer { width: min(100% - 24px, 1480px); }

  .hero-card { padding: 26px 0 18px; }

  .button-grid { grid-template-columns: 1fr; }

  .why-box { grid-template-columns: 1fr; }

  .application-card,
  .artifact-strip,
  .content-grid { margin-left: 0; margin-right: 0; }

  .artifact-strip { padding: 14px 16px; align-items: flex-start; }

  .content-grid { grid-template-columns: 1fr; }
}