:root {
  --qx-navy: #002147;
  --qx-mint: #15f5ba;
  --qx-azure: #87ceeb;
  --qx-gray: #c0c0c0;
  --qx-black: #000000;
  --qx-white: #ffffff;
  --qx-bg: #f5f8fa;
  --qx-dark-blue: #003366;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  color: var(--qx-black);
  background: var(--qx-bg);
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }
}

h1,
h2,
h3 {
  font-family: "Palanquin Dark", Arial, sans-serif;
  font-weight: 700;
  color: var(--qx-dark-blue);
}

code {
  font-size: 0.9em;
  background: rgba(0, 51, 102, 0.08);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.app-header {
  background: var(--qx-navy);
  color: var(--qx-white);
  padding: 0.85rem max(1rem, env(safe-area-inset-left)) 1rem max(1rem, env(safe-area-inset-right));
  border-bottom: 3px solid var(--qx-mint);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: stretch;
  }

  .header-brand {
    flex-direction: column;
    text-align: center;
  }

  .header-titles {
    min-width: 0;
  }

  .header-aside {
    max-width: none;
  }

  .tagline {
    text-align: center;
    max-width: none;
  }
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  min-width: 0;
}

.header-logo-wrap {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  max-width: min(220px, 46vw);
}

.header-logo-img {
  display: block;
  width: auto;
  height: auto;
  max-height: clamp(2.5rem, 5vw, 3.25rem);
  max-width: 100%;
  object-fit: contain;
}

.header-titles {
  text-align: center;
  flex: 1;
  min-width: 12rem;
}

.header-kicker {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--qx-mint);
}

.header-title {
  margin: 0.2rem 0 0;
  font-family: "Palanquin Dark", Arial, sans-serif;
  font-weight: 700;
  font-size: clamp(1.05rem, 3vw, 1.4rem);
  color: var(--qx-white);
  line-height: 1.2;
}

.header-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  justify-content: flex-end;
}

.app-header .header-nav a[href] {
  font-weight: 600;
  color: var(--qx-mint) !important;
  text-decoration: none;
}

.app-header .header-nav a[href]:visited {
  color: var(--qx-mint) !important;
}

.app-header .header-nav a[href]:hover {
  color: var(--qx-white) !important;
  text-decoration: underline;
}

.app-header .header-nav a:focus-visible {
  outline: 2px solid var(--qx-mint);
  outline-offset: 3px;
  border-radius: 4px;
}

.app-title-main {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--qx-mint);
  font-family: "Palanquin Dark", Arial, sans-serif;
}

.app-title-sub {
  margin: 0.2rem 0 0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--qx-white);
  font-family: Arial, Helvetica, sans-serif;
}

.header-aside {
  flex-shrink: 0;
  max-width: 22rem;
}

.tagline {
  font-size: 0.72rem;
  color: var(--qx-azure);
  margin: 0;
  font-weight: normal;
  text-align: right;
  line-height: 1.35;
}

.landing-main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 1.5rem max(1rem, env(safe-area-inset-left)) 3rem max(1rem, env(safe-area-inset-right));
}

@media (min-width: 640px) {
  .landing-main {
    padding-top: 2.25rem;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
}

.landing-hero-title {
  margin: 0 0 1.25rem;
  font-size: clamp(1.85rem, 5vw, 2.35rem);
  text-align: center;
  line-height: 1.2;
  color: var(--qx-dark-blue);
}

.landing-prose p {
  margin: 0 0 1rem;
}

.landing-tagline-line {
  font-family: "Palanquin Dark", Arial, sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--qx-dark-blue);
  margin-top: 1.5rem !important;
}

.section-title {
  margin: 2.5rem 0 1rem;
  font-size: 1.35rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--qx-mint);
}

.pillars {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 720px) {
  .pillars {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }
}

.pillar {
  background: var(--qx-white);
  border-radius: 10px;
  padding: 1.1rem 1rem 1.2rem;
  box-shadow: 0 4px 14px rgba(0, 33, 71, 0.08);
  border-left: 4px solid var(--qx-mint);
}

.pillar__num {
  font-family: "Palanquin Dark", Arial, sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--qx-dark-blue);
  margin: 0 0 0.35rem;
}

.pillar h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.pillar p {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
}

.pillar p:last-child {
  margin-bottom: 0;
}

.steps-section ol {
  margin: 0;
  padding-left: 1.25rem;
}

.steps-section li {
  margin-bottom: 0.5rem;
}

.steps-kicker {
  font-weight: 700;
  color: var(--qx-dark-blue);
  margin-top: 1rem;
}

.ideas-list {
  margin: 0;
  padding-left: 1.25rem;
  columns: 1;
}

@media (min-width: 520px) {
  .ideas-list {
    columns: 2;
  }
}

.ideas-list li {
  margin-bottom: 0.35rem;
  break-inside: avoid;
}

.library-strip {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.library-strip__item {
  margin: 0;
}

.library-strip__item figure {
  margin: 0;
  text-align: center;
}

.library-strip__thumb {
  display: block;
  border-radius: 8px;
  border: 2px solid rgba(0, 51, 102, 0.15);
  background: var(--qx-white);
}

.library-strip__item figcaption {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: #333;
}

.library-strip-empty {
  font-size: 0.9rem;
  color: #444;
}

.landing-next {
  margin-top: 2.75rem;
  padding-top: 2rem;
  border-top: 1px solid var(--qx-gray);
}

.landing-next-title {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
}

.landing-next-lede {
  margin: 0 0 1.25rem;
  color: #333;
}

.landing-cta {
  margin: 2.25rem 0 0;
  padding: 0;
  display: block;
  width: fit-content;
  max-width: 100%;
  background: transparent;
  border: none;
  box-sizing: border-box;
}

/* CTA: use child selector so all paints apply (avoid :any-link quirks in some browsers). */
.landing-main .landing-cta > a.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.35rem;
  font-family: "Palanquin Dark", Arial, sans-serif;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background-color: var(--qx-dark-blue) !important;
  color: var(--qx-mint) !important;
  text-decoration: none !important;
  width: 100%;
  max-width: 22rem;
  box-sizing: border-box;
}

.landing-main .landing-cta > a.btn-primary:link,
.landing-main .landing-cta > a.btn-primary:visited {
  background-color: var(--qx-dark-blue) !important;
  color: var(--qx-mint) !important;
}

.landing-main .landing-cta > a.btn-primary:hover {
  background-color: #00264d !important;
  color: #c5fff0 !important;
}

.landing-main .landing-cta > a.btn-primary:active {
  background-color: #00264d !important;
  color: #c5fff0 !important;
}

.landing-main .landing-cta > a.btn-primary:focus-visible {
  outline: 2px solid var(--qx-mint);
  outline-offset: 3px;
}

@media (min-width: 480px) {
  .landing-main .landing-cta > a.btn-primary {
    width: auto;
  }
}

.app-footer {
  padding: 1rem 1.25rem 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--qx-gray);
}

.app-footer a {
  color: var(--qx-dark-blue);
}

.app-footer__analyst {
  font-weight: 600;
}

.design-error-kind {
  font-size: 0.9rem;
  color: #444;
}

.design-error-kind code {
  font-size: 0.85em;
}

.design-error-list {
  line-height: 1.55;
  max-width: 40rem;
}