:root {
  --blue: #002595;
  --ink: #07122f;
  --text: #26324e;
  --muted: #64708d;
  --line: rgba(0, 37, 149, 0.12);
  --soft: #f3f6fd;
  --warm: #e46f61;
  --warm-dark: #b94f45;
  --warm-soft: rgba(228, 111, 97, 0.12);
  --shadow: 0 24px 70px rgba(0, 37, 149, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -8%, rgba(0, 37, 149, 0.11), transparent 29%),
    radial-gradient(circle at 94% 28%, rgba(228, 111, 97, 0.07), transparent 22%),
    #fff;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.article-shell {
  width: min(790px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(0, 37, 149, 0.08);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(18px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--blue);
  font-size: 22px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.back-link {
  color: var(--muted);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}

.back-link:hover {
  color: var(--blue);
}

.article-hero {
  padding: 92px 0 66px;
  text-align: center;
}

.series-label {
  margin-bottom: 22px;
  color: var(--blue);
  font-size: 14px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.progress {
  width: min(260px, 70%);
  height: 4px;
  margin: 0 auto 32px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(0, 37, 149, 0.1);
}

.progress span {
  display: block;
  width: 16.666%;
  height: 100%;
  border-radius: inherit;
  background: var(--warm);
}

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

h1 {
  margin-bottom: 28px;
  color: var(--ink);
  font-size: clamp(48px, 6vw, 72px);
  line-height: 0.99;
  font-weight: 820;
  letter-spacing: -0.058em;
}

.standfirst {
  max-width: 720px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 22px;
  line-height: 1.5;
  font-style: italic;
}

.article-content {
  padding-bottom: 42px;
}

.article-content h2 {
  margin: 68px 0 22px;
  color: var(--ink);
  font-size: clamp(32px, 4vw, 42px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.045em;
}

.article-content p {
  margin-bottom: 24px;
  font-size: 20px;
  line-height: 1.72;
}

.article-content strong {
  color: var(--ink);
}

.article-content ul {
  display: grid;
  gap: 12px;
  margin: 28px 0 34px;
  padding: 0;
  list-style: none;
}

.article-content li {
  position: relative;
  padding-left: 28px;
  font-size: 20px;
  line-height: 1.55;
}

.article-content li::before {
  position: absolute;
  top: 0.68em;
  left: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warm);
  box-shadow: 0 0 0 5px var(--warm-soft);
  content: "";
}

.article-figure {
  width: min(1040px, calc(100vw - 48px));
  margin: 54px 0 64px 50%;
  transform: translateX(-50%);
}

.article-figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
}

.article-figure figcaption {
  margin-top: 13px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.4;
  text-align: center;
}

.lap-question {
  margin: 34px 0;
  padding: 28px 32px;
  border-left: 5px solid var(--warm);
  border-radius: 0 22px 22px 0;
  background: var(--warm-soft);
  color: var(--ink);
  font-size: 24px;
  line-height: 1.4;
  font-weight: 760;
}

.cta-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin: 72px auto 30px;
}

.cta-card {
  display: flex;
  min-height: 390px;
  flex-direction: column;
  align-items: flex-start;
  padding: 44px;
  border-radius: 32px;
}

.cta-card.primary {
  background:
    radial-gradient(circle at 90% 15%, rgba(228, 111, 97, 0.3), transparent 27%),
    var(--blue);
  color: #fff;
  box-shadow: 0 28px 80px rgba(0, 37, 149, 0.2);
}

.cta-card.secondary {
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 88% 16%, rgba(228, 111, 97, 0.15), transparent 30%),
    #fff;
  box-shadow: var(--shadow);
}

.cta-card .eyebrow {
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.cta-card h2 {
  margin: 0 0 16px;
  font-size: clamp(32px, 3.3vw, 43px);
  line-height: 1.05;
  letter-spacing: -0.045em;
}

.cta-card.primary h2 {
  color: #fff;
}

.cta-card.secondary .eyebrow {
  color: var(--warm-dark);
}

.cta-card.secondary h2 {
  color: var(--ink);
}

.cta-card p {
  margin-bottom: 26px;
  font-size: 18px;
  line-height: 1.55;
}

.cta-card.primary p {
  color: rgba(255, 255, 255, 0.8);
}

.cta-card.secondary p {
  color: var(--muted);
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid #fff;
  border-radius: 999px;
  background: #fff;
  color: var(--blue);
  font-weight: 780;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.cta-card .button {
  margin-top: auto;
}

.cta-card.secondary .button {
  border-color: var(--blue);
  background: var(--blue);
  color: #fff;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.16);
}

.next-question {
  margin: 34px auto 90px;
  padding: 34px 38px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(0, 37, 149, 0.06);
}

.next-question .eyebrow {
  margin-bottom: 12px;
  color: var(--warm-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.next-question h2 {
  margin: 0 0 11px;
  color: var(--ink);
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.next-question p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.5;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 40px 0 52px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.site-footer strong {
  color: var(--blue);
}

@media (max-width: 900px) {
  .cta-panel {
    grid-template-columns: 1fr;
  }

  .cta-card {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  .shell,
  .article-shell {
    width: min(100% - 28px, 1180px);
  }

  .header-inner {
    min-height: 68px;
  }

  .brand {
    font-size: 18px;
  }

  .back-link {
    font-size: 13px;
  }

  .article-hero {
    padding: 64px 0 44px;
  }

  h1 {
    font-size: 48px;
  }

  .standfirst,
  .article-content p,
  .article-content li {
    font-size: 18px;
  }

  .article-content h2 {
    margin-top: 52px;
  }

  .article-figure {
    width: calc(100vw - 28px);
    margin-top: 40px;
    margin-bottom: 50px;
  }

  .article-figure img {
    border-radius: 24px;
  }

  .lap-question,
  .cta-card,
  .next-question {
    padding: 28px 24px;
  }

  .lap-question {
    font-size: 21px;
  }

  .site-footer {
    flex-direction: column;
  }
}