:root {
  --ink: #1d2433;
  --muted: #586174;
  --paper: #fffaf0;
  --panel: #ffffff;
  --line: #1d2433;
  --red: #e84b3c;
  --blue: #2563eb;
  --yellow: #f7c948;
  --green: #24a148;
  --sky: #dff3ff;
  --shadow: 6px 6px 0 #1d2433;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", Arial, sans-serif;
  line-height: 1.55;
  background:
    linear-gradient(rgba(37,99,235,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.08) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
}
a { color: inherit; }
.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  z-index: 20;
  background: var(--yellow);
  border: 2px solid var(--ink);
  padding: 8px 12px;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 76px;
  padding: 14px 28px;
  background: #fff;
  border-bottom: 3px solid var(--ink);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: conic-gradient(from 45deg, var(--red), var(--yellow), var(--green), var(--blue), var(--red));
  border: 2px solid var(--ink);
  color: #fff;
  font-weight: 900;
  text-shadow: 1px 1px 0 var(--ink);
}
.brand strong,
.brand small { display: block; }
.brand small {
  color: var(--muted);
  font-size: 0.82rem;
}
.top-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.top-links a,
.menu-toggle,
.primary-action,
.secondary-action {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 9px 13px;
  text-decoration: none;
  font-weight: 900;
  border: 2px solid var(--ink);
}
.top-links a {
  background: #fff;
}
.top-links a:nth-child(4n+1) { box-shadow: inset 0 -6px 0 rgba(232,75,60,0.25); }
.top-links a:nth-child(4n+2) { box-shadow: inset 0 -6px 0 rgba(37,99,235,0.22); }
.top-links a:nth-child(4n+3) { box-shadow: inset 0 -6px 0 rgba(247,201,72,0.45); }
.top-links a:nth-child(4n+4) { box-shadow: inset 0 -6px 0 rgba(36,161,72,0.25); }
.top-links a[aria-current="page"],
.top-links a:hover {
  background: var(--yellow);
}
.menu-toggle {
  display: none;
  background: var(--blue);
  color: #fff;
}
.hero {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 3px solid var(--ink);
}
.detail-hero { min-height: 400px; }
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(29,36,51,0.82), rgba(37,99,235,0.34), rgba(247,201,72,0.2)),
    url("assets/app-hero.jpg") center/cover;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 16px;
  background: repeating-linear-gradient(90deg, var(--red) 0 80px, var(--yellow) 80px 160px, var(--blue) 160px 240px, var(--green) 240px 320px);
}
.hero-content {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 88px 0 112px;
  color: #fff;
}
.kicker,
.section-kicker {
  margin: 0 0 12px;
  color: var(--yellow);
  font-size: 0.84rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0;
}
h1,
h2,
h3,
p { margin-top: 0; }
h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: 3.8rem;
  line-height: 1.02;
  letter-spacing: 0;
  text-shadow: 3px 3px 0 var(--ink);
}
h2 {
  font-size: 1.9rem;
  line-height: 1.14;
  letter-spacing: 0;
}
.hero-copy {
  max-width: 660px;
  font-size: 1.16rem;
  color: rgba(255,255,255,0.95);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) 350px;
  gap: 28px;
  align-items: end;
}
.hero-main { min-width: 0; }
.hero-panel {
  display: grid;
  gap: 14px;
  padding: 20px;
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: rgba(255,255,255,0.92);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.hero-panel h2 {
  font-size: 1.6rem;
  line-height: 1.08;
}
.hero-panel p,
.hero-panel li {
  color: var(--ink);
}
.hero-panel ul {
  margin: 0;
  padding-left: 20px;
}
.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.hero-metrics div {
  display: grid;
  gap: 3px;
  min-width: 112px;
  padding: 12px 14px;
  border-radius: 8px;
  border: 2px solid var(--ink);
  background: #fff;
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}
.hero-metrics strong {
  font-size: 1.4rem;
  line-height: 1;
}
.hero-metrics span {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
}
.primary-action {
  background: var(--yellow);
  color: var(--ink);
  box-shadow: var(--shadow);
}
.secondary-action {
  background: #fff;
  color: var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
}
main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}
.intro-band,
.split-section,
.app-bridge,
.site-footer {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 28px;
  align-items: center;
}
.intro-band {
  margin-top: 30px;
  padding: 24px;
  background: var(--panel);
  border: 3px solid var(--ink);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.intro-band p:last-child {
  color: var(--muted);
  font-size: 1.02rem;
}
.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 42px 0;
}
.focus-section,
.cadence-section {
  margin: 54px 0;
}
.focus-grid,
.cadence-grid,
.quick-facts {
  display: grid;
  gap: 18px;
}
.focus-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.cadence-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.stage-card,
.resource-card,
.action-block,
.menu-panel,
.side-menu,
.focus-card,
.cadence-card,
.fact-card {
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}
.stage-card {
  min-height: 226px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 19px;
  text-decoration: none;
}
.stage-card:hover,
.resource-card:hover,
.nav-link:hover {
  transform: translate(-2px, -2px);
}
.stage-number {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  border: 2px solid var(--ink);
  background: var(--yellow);
  color: var(--ink);
  font-weight: 900;
}
.stage-card strong,
.resource-card strong,
.focus-card strong,
.cadence-card strong,
.fact-card h2 {
  font-size: 1.15rem;
  line-height: 1.2;
}
.stage-card span:last-child,
.resource-card em,
.focus-card p,
.cadence-card p,
.fact-card p {
  color: var(--muted);
  font-style: normal;
}
.focus-card,
.cadence-card,
.fact-card {
  padding: 18px;
}
.focus-card {
  min-height: 184px;
  display: grid;
  gap: 10px;
}
.focus-card span,
.cadence-card span {
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--ink);
}
.cadence-card {
  display: grid;
  gap: 10px;
  min-height: 176px;
  background: linear-gradient(180deg, rgba(247,201,72,0.24), rgba(255,255,255,0));
}
.split-section,
.resource-section,
.related-section,
.app-bridge {
  margin: 54px 0;
}
.sync-list {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
}
.sync-list li + li { margin-top: 10px; }
.menu-panel,
.side-menu {
  padding: 18px;
  background: var(--sky);
}
.nav-group + .nav-group { margin-top: 18px; }
.nav-group h2 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 0.84rem;
  text-transform: uppercase;
}
.nav-links {
  display: grid;
  gap: 8px;
}
.nav-link {
  display: block;
  padding: 10px 11px;
  border-radius: 8px;
  color: var(--ink);
  text-decoration: none;
  border: 2px solid var(--ink);
  background: #fff;
}
.nav-link[aria-current="page"] {
  background: var(--yellow);
}
.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.resource-grid.compact {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.resource-card {
  min-height: 174px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  text-decoration: none;
}
.resource-card span {
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}
.accent-gold { background-image: linear-gradient(180deg, rgba(247,201,72,0.28), rgba(255,255,255,0) 80px); }
.accent-red { background-image: linear-gradient(180deg, rgba(232,75,60,0.18), rgba(255,255,255,0) 80px); }
.accent-blue { background-image: linear-gradient(180deg, rgba(37,99,235,0.17), rgba(255,255,255,0) 80px); }
.accent-green { background-image: linear-gradient(180deg, rgba(36,161,72,0.17), rgba(255,255,255,0) 80px); }
.page-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 28px;
  margin-top: 40px;
}
.quick-facts {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 24px;
}
.side-menu {
  align-self: start;
  position: sticky;
  top: 96px;
}
.action-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.action-block {
  padding: 22px;
}
.action-block ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
}
.action-block li + li { margin-top: 10px; }
.app-bridge {
  padding: 24px;
  background: var(--blue);
  color: #fff;
  border: 3px solid var(--ink);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.app-bridge .section-kicker { color: var(--yellow); }
.app-bridge p { color: rgba(255,255,255,0.9); }
.site-footer {
  width: min(1180px, calc(100% - 40px));
  margin: 70px auto 0;
  padding: 28px 0 40px;
  border-top: 3px solid var(--ink);
}
.site-footer p {
  margin: 6px 0 0;
  color: var(--muted);
}
.footer-links {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-links a {
  font-weight: 900;
}
.mobile-menu {
  padding: 18px;
  background: var(--sky);
  border-bottom: 3px solid var(--ink);
}
@media (max-width: 960px) {
  .top-links { display: none; }
  .menu-toggle { display: inline-flex; }
  h1 { font-size: 3rem; }
  .hero-layout,
  .intro-band,
  .split-section,
  .app-bridge,
  .site-footer,
  .page-shell {
    grid-template-columns: 1fr;
  }
  .side-menu { position: static; }
  .stage-grid,
  .focus-grid,
  .cadence-grid,
  .quick-facts,
  .resource-grid,
  .resource-grid.compact,
  .action-layout {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 560px) {
  .site-header { padding: 12px 16px; }
  .brand small { display: none; }
  .hero-content { width: min(100% - 28px, 1120px); padding-top: 72px; }
  h1 { font-size: 2.3rem; }
  main,
  .site-footer { width: min(100% - 28px, 1180px); }
  .hero-actions { display: grid; }
}