:root {
  color-scheme: dark;
  --bg: #070908;
  --surface: #0b0f0e;
  --text: #f0f3f1;
  --muted: #a5aeaa;
  --quiet: #707a76;
  --line: #28322f;
  --line-strong: #3c4945;
  --accent: #6bd6bf;
  --page: 74rem;
  --gutter: clamp(1.15rem, 4vw, 3.25rem);
  --section-space: clamp(4.5rem, 10vw, 8.5rem);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Hiragino Sans",
    "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
  line-height: 1.72;
}

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

a {
  color: inherit;
  text-decoration-color: var(--line-strong);
  text-underline-offset: 0.28em;
}

a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.55rem 0.8rem;
  background: var(--text);
  color: var(--bg);
  font-size: 0.8rem;
  transform: translateY(-220%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
.site-footer,
main {
  width: min(100%, var(--page));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.site-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.85rem 1.25rem;
  align-items: center;
  padding-block: 1rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 0.7rem;
  width: fit-content;
  font-size: 0.82rem;
  font-weight: 650;
  letter-spacing: 0.025em;
  text-decoration: none;
  white-space: nowrap;
}

.wordmark img {
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--line);
}

.header-controls {
  display: contents;
}

.site-nav,
.language-selector,
.site-footer nav {
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  grid-column: 1 / -1;
  grid-row: 2;
  gap: 1.2rem;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
  display: none;
}

.site-nav a,
.language-selector a,
.site-footer a {
  text-decoration: none;
  white-space: nowrap;
}

.language-selector {
  display: flex;
  grid-column: 2;
  grid-row: 1;
  gap: 0.4rem;
  align-items: center;
  color: var(--quiet);
}

.language-selector a[aria-current="page"] {
  color: var(--accent);
}

.hero {
  display: grid;
  gap: clamp(3rem, 9vw, 6rem);
  align-items: center;
  min-height: min(52rem, calc(100svh - 6.6rem));
  padding-block: clamp(4rem, 10vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.hero-icon {
  width: min(72vw, 17rem);
  margin: 0;
  border: 1px solid var(--line-strong);
  background: #fff;
}

.hero-icon img {
  width: 100%;
  aspect-ratio: 1;
}

.hero-plate {
  min-width: 0;
}

.serial-label,
.eyebrow,
.section-index,
.instrument-number,
.instrument-link-label,
.effective-date,
.policy-toc > p {
  margin: 0;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.serial-label {
  margin-bottom: 0.65rem;
  color: var(--quiet);
}

.eyebrow,
.section-index,
.instrument-link-label {
  color: var(--accent);
}

.eyebrow {
  margin-bottom: clamp(2rem, 5vw, 3.4rem);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  letter-spacing: -0.03em;
  line-height: 1.12;
}

h1 {
  max-width: 16ch;
  margin-bottom: clamp(2rem, 5vw, 3rem);
  font-size: clamp(2.55rem, 8vw, 5.7rem);
  font-weight: 520;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.85rem, 5vw, 3.6rem);
  font-weight: 520;
}

h2 span {
  color: var(--muted);
}

h3 {
  margin-block: 0;
  font-size: 0.92rem;
  font-weight: 650;
  letter-spacing: 0.015em;
}

.hero-copy {
  max-width: 42rem;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.14rem);
}

.metadata-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 0;
  border-block: 1px solid var(--line);
  list-style: none;
}

.metadata-strip li {
  padding: 0.72rem 1rem 0.72rem 0;
  color: var(--quiet);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.metadata-strip li + li::before {
  margin-right: 1rem;
  color: var(--line-strong);
  content: "/";
}

.section {
  padding-block: var(--section-space);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  display: grid;
  gap: 1.75rem;
  margin-bottom: clamp(3.5rem, 8vw, 6rem);
}

.section-body {
  max-width: 44rem;
  color: var(--muted);
}

.section-body p {
  margin-bottom: 1.15rem;
}

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

.philosophy .section-body {
  margin-left: auto;
}

.instrument-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
}

.instrument-list li {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.45rem 1rem;
  align-items: baseline;
  padding-block: 1.55rem;
  border-bottom: 1px solid var(--line);
}

.instrument-number {
  grid-column: 1;
  grid-row: 1 / span 2;
  color: var(--quiet);
}

.instrument-list h3 {
  grid-column: 2;
  color: var(--text);
}

.instrument-list p {
  grid-column: 2;
  max-width: 38rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.support-layout {
  display: grid;
  gap: clamp(3rem, 8vw, 6rem);
}

.instrument-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.7rem 1rem;
  align-items: end;
  min-width: 0;
  padding-block: 1.25rem;
  border-block: 1px solid var(--line-strong);
  text-decoration: none;
}

.instrument-link-label {
  grid-column: 1 / -1;
}

.instrument-link-value {
  min-width: 0;
  color: var(--text);
  font-size: clamp(0.86rem, 3.8vw, 1.08rem);
}

.instrument-link > span[aria-hidden="true"] {
  color: var(--accent);
}

.policy-link {
  display: grid;
  gap: clamp(3rem, 8vw, 6rem);
  align-items: end;
  padding-block: var(--section-space);
}

.policy-link .section-index {
  margin-bottom: 1.75rem;
}

.policy-link h2 {
  max-width: 15ch;
}

.policy-link > a {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 1.15rem;
  border-block: 1px solid var(--line-strong);
  color: var(--text);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.policy-link > a span {
  color: var(--accent);
}

.site-footer {
  display: grid;
  gap: 1.25rem;
  padding-block: 2.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.75rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

.site-footer p {
  margin: 0;
}

.muted,
.copyright {
  color: var(--quiet);
}

.policy-hero {
  padding-block: clamp(4.5rem, 11vw, 8rem);
  border-bottom: 1px solid var(--line);
}

.policy-hero .eyebrow {
  margin-bottom: clamp(2rem, 5vw, 3.2rem);
}

.policy-hero h1 {
  max-width: 15ch;
  margin-bottom: 0;
  font-size: clamp(2.55rem, 8vw, 5.2rem);
}

.effective-date {
  margin-top: 2.5rem;
  color: var(--quiet);
  line-height: 1.7;
}

.policy-layout {
  display: grid;
}

.policy-toc {
  display: none;
}

.policy-language {
  min-width: 0;
  padding-block: var(--section-space);
}

.policy-document-header {
  margin-bottom: clamp(3.5rem, 9vw, 6.5rem);
}

.policy-document-header .section-index {
  margin-bottom: 1.5rem;
}

.policy-document-header h2 {
  max-width: 18ch;
}

.policy-language section {
  max-width: 47rem;
  padding-block: 2.35rem;
  border-top: 1px solid var(--line);
  scroll-margin-top: 2rem;
}

.policy-language section:first-of-type {
  border-top-color: var(--line-strong);
}

.policy-language section h3 {
  margin-bottom: 1.25rem;
}

.policy-language section p,
.policy-language section li {
  color: var(--muted);
}

.policy-language section p:last-child,
.policy-language section ul:last-child {
  margin-bottom: 0;
}

.policy-language ul {
  padding-left: 1.3rem;
}

.policy-language li + li {
  margin-top: 0.42rem;
}

code {
  color: var(--text);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.9em;
}

.policy-contact {
  padding: 1rem 0 1rem 1.2rem;
  border-left: 2px solid var(--accent);
}

.not-found {
  display: grid;
  align-content: center;
  min-height: 100svh;
  border: 0;
}

.not-found .section-index {
  margin-bottom: 2rem;
}

.not-found h1 {
  margin-bottom: 2rem;
}

.not-found a {
  width: fit-content;
  color: var(--accent);
}

@media (min-width: 48rem) {
  .site-header {
    display: flex;
    min-height: 4.75rem;
    padding-block: 0;
  }

  .header-controls {
    display: flex;
    align-items: center;
    gap: clamp(1.5rem, 4vw, 3rem);
    margin-left: auto;
  }

  .site-nav {
    grid-column: auto;
    grid-row: auto;
    overflow: visible;
  }

  .language-selector {
    grid-column: auto;
    grid-row: auto;
    padding-left: clamp(1.25rem, 3vw, 2rem);
    border-left: 1px solid var(--line);
  }

  .hero {
    grid-template-columns: minmax(14rem, 0.75fr) minmax(0, 1.35fr);
  }

  .hero-icon {
    width: min(100%, 21rem);
  }

  .hero-plate {
    padding-left: clamp(2.5rem, 6vw, 5rem);
    border-left: 1px solid var(--line);
  }

  .section-heading {
    grid-template-columns: minmax(9rem, 0.34fr) minmax(0, 1fr);
    align-items: start;
  }

  .instrument-list li {
    grid-template-columns: 3.5rem minmax(9rem, 0.4fr) minmax(0, 1fr);
    gap: 1.5rem;
    padding-block: 1.8rem;
  }

  .instrument-number {
    grid-column: 1;
    grid-row: 1;
  }

  .instrument-list h3 {
    grid-column: 2;
  }

  .instrument-list p {
    grid-column: 3;
  }

  .support-layout {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.8fr);
    align-items: end;
  }

  .policy-link {
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.55fr);
  }

  .site-footer {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .site-footer .copyright {
    grid-column: 1 / -1;
  }
}

@media (min-width: 68rem) {
  .policy-layout {
    grid-template-columns: 13rem minmax(0, 1fr);
    gap: clamp(3.5rem, 8vw, 7rem);
  }

  .policy-toc {
    position: sticky;
    top: 2rem;
    display: flex;
    flex-direction: column;
    align-self: start;
    gap: 0.6rem;
    padding-top: var(--section-space);
    font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    font-size: 0.68rem;
  }

  .policy-toc > p {
    margin-bottom: 0.5rem;
    color: var(--accent);
  }

  .policy-toc a {
    color: var(--quiet);
    text-decoration: none;
  }

  .policy-toc a:last-child {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}