*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Same colours and fonts as the main page (index.html) */
:root {
  --ink:          #16191c;
  --ink-mid:      #444b52;
  --ink-light:    #828a93;
  --paper:        #eceef1;
  --paper-warm:   #dfe3e8;
  --accent:       #1d6fd0;
  --accent-pale:  #e8f0fb;
  --rule:         #cdd3da;
  --tag-bg:       #e4e8ec;
  --tag-text:     #444b52;
  --card-bg:      #ffffff;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
  --max: 1100px;
  --read: 720px;
  --gap: clamp(1.25rem, 4vw, 2.5rem);
  --shadow: 0 1px 3px rgba(20,30,45,0.06), 0 6px 16px rgba(20,30,45,0.06);
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* NAV (copied from main page) */
body > nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247,245,240,0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gap);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.nav-logo {
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-mid);
  text-decoration: none;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--accent); }
@media (max-width: 480px) {
  .nav-inner { gap: 0.75rem; }
  .nav-logo { font-size: 0.95rem; }
  .nav-links { gap: 0.9rem; }
  .nav-links a { font-size: 0.7rem; letter-spacing: 0.04em; }
}

/* PAGE */
.p-wrap {
  max-width: var(--read);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 3.5rem) var(--gap) clamp(3rem, 7vw, 5rem);
}
.p-back {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-mid);
  text-decoration: none;
  letter-spacing: 0.02em;
  margin-bottom: 2rem;
}
.p-back:hover { color: var(--accent); }

.p-head { margin-bottom: 2.5rem; }
.p-sector {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.p-lead {
  margin-top: 1.2rem;
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--ink-mid);
  line-height: 1.7;
}
.p-note {
  margin-top: 0.9rem;
  font-size: 0.8rem;
  font-style: italic;
  color: var(--ink-light);
}

.p-body {
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: var(--shadow);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.p-section + .p-section { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--rule); }
.p-section h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.4rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.8rem;
}
.p-section h2 span {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--ink-light);
  margin-right: 0.8em;
  vertical-align: 0.25em;
}
.p-section p, .p-section li {
  font-size: 1rem;
  color: var(--ink-mid);
  line-height: 1.8;
}
.p-section p + p { margin-top: 0.9rem; }
.p-section ul { margin-top: 0.8rem; padding-left: 1.2rem; }
.p-section li + li { margin-top: 0.35rem; }
.p-section strong { color: var(--ink); font-weight: 500; }

.p-figure {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
}
.p-figure img { display: block; width: 100%; height: auto; }
.p-figure figcaption {
  margin-top: 0.8rem;
  font-size: 0.78rem;
  color: var(--ink-light);
  line-height: 1.5;
}

.p-built {
  margin-top: 2rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
}
.p-built h3 {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-light);
  margin-bottom: 0.7rem;
}
.card-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.25rem 0.55rem;
  border-radius: 2px;
  letter-spacing: 0.03em;
}

.p-cta {
  margin-top: 2rem;
  padding: 1.2rem 1.3rem;
  background: var(--accent-pale);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.p-cta-title { font-weight: 500; color: var(--ink); font-size: 0.95rem; }
.p-cta-sub { font-size: 0.82rem; color: var(--ink-mid); }
.btn {
  display: inline-block;
  padding: 0.6rem 1.3rem;
  border-radius: 3px;
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: 0.01em;
  transition: all 0.15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #1857a8; }

/* PREVIOUS / NEXT */
.p-pn {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 560px) { .p-pn { grid-template-columns: 1fr; } }
.pn {
  display: flex;
  flex-direction: column;
  padding: 1rem 1.2rem;
  background: var(--card-bg);
  border: 1px solid var(--rule);
  border-radius: 4px;
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, background 0.15s;
}
.pn:hover { border-color: var(--accent); background: var(--accent-pale); }
.pn-next { text-align: right; grid-column: 2; }
@media (max-width: 560px) { .pn-next { grid-column: 1; } }
.pn-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.25rem;
}
.pn-title { font-family: var(--serif); font-size: 1rem; line-height: 1.3; color: var(--ink); }

footer {
  border-top: 1px solid var(--rule);
  padding: 1.75rem var(--gap);
  text-align: center;
  font-size: 0.75rem;
  color: var(--ink-light);
}