@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Source+Serif+4:ital,wght@0,400;0,600;0,700;1,400&display=swap");

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

html {
  scroll-behavior: smooth;
  hanging-punctuation: first last;
}

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    url("/assets/blueprint-grid-bg.png"),
    linear-gradient(180deg, #f8fafc 0%, var(--paper) 40%, #eef3f9 100%);
  background-size: cover, auto;
  background-attachment: fixed, scroll;
  background-blend-mode: soft-light, normal;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
}

body > * { position: relative; z-index: 1; }

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

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1rem; max-width: var(--measure); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 0.18em;
}

a::after {
  content: " ›";
  font-weight: 700;
  text-decoration: none;
  display: inline;
}

a.no-chevron::after,
.site-nav a::after,
.logo-link::after,
.btn::after,
.chip::after,
.age-bar a::after,
.cookie-banner a::after,
.safety-strip a::after,
.footer a::after,
.filter-chip::after,
.mark-link::after { content: none; }

a:hover { color: var(--magenta); }

a:focus-visible,
button:focus-visible,
.chip:focus-visible,
.filter-chip:focus-visible {
  outline: 3px solid var(--magenta);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  background: var(--ink);
  color: var(--white);
  padding: var(--space-2) var(--space-4);
  z-index: 1000;
}

.skip-link:focus { top: var(--space-4); }

.skip-link::after { content: none; }

.age-bar {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink);
  color: #f2f4f8;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  padding: 0.55rem 1rem;
}

.age-bar a { color: #fff; text-decoration: underline; }
.age-bar a:hover { color: var(--magenta); }

.site-header {
  background: var(--white);
  box-shadow: var(--shadow);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding-block: var(--space-3);
}

.mark-block {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: var(--blue);
  flex-shrink: 0;
}

.mark-block img {
  width: 1.75rem;
  height: 1.75rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
}

.brand-lockup::after { content: none; }
.brand-lockup:hover { color: var(--blue); }

.brand-name {
  font-size: 1.15rem;
  line-height: 1.1;
}

.brand-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.nav-toggle {
  display: none;
  margin-inline-start: auto;
  background: var(--white);
  border: 2px solid var(--blue);
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
}

.site-nav {
  margin-inline-start: auto;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 2px solid transparent;
  padding-bottom: 0.15rem;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--blue);
  border-bottom-color: var(--magenta);
}

.float-section {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-block: var(--space-5);
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.bracket {
  position: relative;
}

.bracket::before,
.bracket::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border-color: var(--blue);
  border-style: solid;
  pointer-events: none;
}

.bracket::before {
  top: 8px;
  left: 8px;
  border-width: 2px 0 0 2px;
}

.bracket::after {
  right: 8px;
  bottom: 8px;
  border-width: 0 2px 2px 0;
}

.bracket-tr::before {
  left: auto;
  right: 8px;
  border-width: 2px 2px 0 0;
}

.bracket-tr::after {
  right: auto;
  left: 8px;
  border-width: 0 0 2px 2px;
}

.kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--magenta);
  margin: 0 0 var(--space-3);
}

.hero {
  padding-block: clamp(3.5rem, 10vw, 6.5rem) clamp(2.5rem, 6vw, 4rem);
  background:
    linear-gradient(180deg, rgba(244, 247, 251, 0.92), rgba(244, 247, 251, 0.88)),
    url("/assets/hero-blueprint-band.png") center / cover no-repeat;
}

.hero__inner {
  width: min(100% - 2rem, 38rem);
  margin-inline: auto;
  text-align: center;
}

.hero__inner p {
  margin-inline: auto;
  color: var(--ink-soft);
}

.notice-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  margin-top: var(--space-5);
}

.pill-ico {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--blue-soft);
  color: var(--blue);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.pill-ico .dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--magenta);
}

.cred-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

.cred-item {
  flex: 1 1 8rem;
  text-align: center;
  padding: var(--space-4);
  background: var(--blue-soft);
  border-radius: calc(var(--radius) - 4px);
}

.cred-item strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.cred-item span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.filter-chip {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.5rem 0.85rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.filter-chip.is-active,
.filter-chip[aria-pressed="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
  text-decoration-color: var(--magenta);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-inline-start: 1.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(var(--blue), var(--magenta));
}

.op-block {
  position: relative;
  padding: var(--space-5) 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.op-block::before {
  content: "";
  position: absolute;
  left: -1.28rem;
  top: 1.85rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--magenta);
  box-shadow: 0 0 0 3px var(--blue-soft);
}

.op-block:hover {
  transform: translateY(-2px);
}

.op-block.is-hidden { display: none; }

.op-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.op-logo {
  width: 4.5rem;
  height: 3rem;
  object-fit: contain;
  background: var(--paper);
  padding: 0.25rem;
}

.op-title {
  margin: 0;
  flex: 1 1 12rem;
}

.grade {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1;
  color: var(--blue);
  border-bottom: 3px solid var(--magenta);
  padding: 0.15rem 0.35rem;
  min-width: 2.5rem;
  text-align: center;
}

.badge-line {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin: var(--space-3) 0;
}

.badge-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-decoration: underline;
  text-underline-offset: 0.22em;
  text-decoration-thickness: 1px;
  color: var(--ink-soft);
}

.licence-box {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  background: var(--paper);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-4) 0;
}

.op-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  margin-top: var(--space-4);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background: var(--magenta);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  border: 2px solid var(--magenta);
  padding: 0.8rem 1.25rem;
  cursor: pointer;
}

.btn:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--white);
}

.btn--ghost {
  background: transparent;
  color: var(--blue);
  border-color: var(--blue);
}

.btn--ghost:hover {
  background: var(--blue);
  color: var(--white);
}

.btn-note {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
  width: 100%;
}

@media (min-width: 720px) {
  .btn { width: auto; }
  .btn-note { width: auto; }
}

@media (max-width: 719px) {
  .btn { width: 100%; }
}

.facing {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.facing__panel {
  flex: 1 1 18rem;
  background: var(--paper);
  padding: var(--space-5);
  border-radius: calc(var(--radius) - 4px);
  position: relative;
}

.facing__panel h3 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 0;
}

.spec-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}

.spec-list li:last-child { border-bottom: 0; }

.spec-list .label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.spec-list .value {
  font-weight: 600;
  text-align: right;
}

.table-wrap { overflow-x: auto; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.compare-table th,
.compare-table td {
  text-align: left;
  padding: 0.75rem 0.65rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.compare-table thead th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
  border-bottom: 3px solid var(--blue);
  background: var(--blue-soft);
}

.compare-table .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.motif-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.motif-list li {
  position: relative;
  padding-inline-start: 1.4rem;
  margin-bottom: 0.65rem;
}

.motif-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--magenta);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.sources-strip {
  background: var(--ink);
  color: #e8ecf4;
  border-radius: var(--radius);
  padding: var(--space-5);
  margin-block: var(--space-5);
}

.sources-strip h3 {
  color: #fff;
  margin-top: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sources-strip a { color: #fff; }
.sources-strip a:hover { color: var(--magenta); }

.sources-strip ul {
  margin: 0;
  padding-inline-start: 1.1rem;
}

.change-note {
  border-inline-start: 4px solid var(--magenta);
  background: var(--magenta-soft);
  padding: var(--space-4);
  font-size: 0.95rem;
}

.safety-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-4) var(--space-5);
  margin-block: var(--space-5);
}

.safety-strip__logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.safety-strip__logos a {
  display: flex;
  align-items: center;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.safety-strip__logos a:hover { border-bottom-color: var(--magenta); }

.safety-strip__logos img {
  height: 2rem;
  width: auto;
  max-width: 7rem;
  object-fit: contain;
}

.faq-group { margin-bottom: var(--space-6); }

.faq-item {
  display: flex;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--line);
}

.faq-num {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  color: var(--blue);
  line-height: 1;
  min-width: 2.4rem;
}

.faq-item h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.faq-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.figure-halftone {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--radius) - 4px);
}

.figure-halftone img {
  width: 100%;
  filter: contrast(1.05) grayscale(0.15);
  mix-blend-mode: multiply;
}

.figure-halftone figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin-top: var(--space-2);
}

.aff-note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--blue-soft);
  padding: var(--space-3) var(--space-4);
  border-radius: calc(var(--radius) - 4px);
}

.site-footer {
  margin-top: var(--space-7);
  background: var(--ink);
  color: #d7dce6;
  padding: var(--space-7) 0 var(--space-5);
}

.site-footer a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.site-footer a:hover { color: var(--magenta); }

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer-col {
  flex: 1 1 11rem;
}

.footer-col h2 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--magenta);
  margin: 0 0 var(--space-3);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li { margin-bottom: 0.45rem; }

.footer-col a {
  font-size: 0.92rem;
  font-weight: 400;
  text-decoration: underline;
}

.footer-compliance {
  border-top: 1px solid #2a3140;
  padding-top: var(--space-5);
  font-size: 0.88rem;
  line-height: 1.55;
  text-align: center;
}

.footer-compliance p {
  max-width: 70ch;
  margin-inline: auto;
  margin-bottom: var(--space-3);
}

.cookie-banner {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 95;
  background: var(--white);
  border-top: 3px solid var(--blue);
  box-shadow: 0 -8px 24px rgba(18, 20, 26, 0.12);
  padding: var(--space-4);
  display: none;
}

.cookie-banner.is-visible { display: block; }

.cookie-banner__inner {
  width: min(100%, var(--max));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.cookie-banner p {
  margin: 0;
  flex: 1 1 16rem;
  font-size: 0.92rem;
}

.prose h2 { margin-top: var(--space-6); }
.prose h3 { margin-top: var(--space-5); }

.page-hero {
  padding-block: var(--space-7) var(--space-5);
}

.page-hero .u-narrow,
.page-hero .u-container {
  text-align: left;
}

.disclaimer {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    width: 100%;
    margin-inline-start: 0;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul {
    flex-direction: column;
    gap: 0.65rem;
    padding-block: var(--space-3);
  }
  .site-header__inner { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .op-block { transition: none; }
  .op-block:hover { transform: none; }
}

@media print {
  .age-bar,
  .cookie-banner,
  .nav-toggle,
  .btn { display: none !important; }
  body { background: #fff; }
  .float-section { box-shadow: none; border: 1px solid #ccc; }
}