:root {
  color-scheme: dark;
  --coal: #181512;
  --coal-raised: #201c18;
  --paper: #eee9df;
  --muted: #bdb5aa;
  --line: #3a342f;
  --accent: #c56b52;
  --serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --page-gutter: clamp(1.25rem, 4vw, 4rem);
  --content-width: 90rem;
  --section-space: clamp(7.5rem, 14vw, 13rem);
}

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

html {
  background: var(--coal);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 20rem;
  overflow-x: hidden;
  background: var(--coal);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  color: inherit;
  font: inherit;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.9rem;
  background: var(--accent);
  color: var(--coal);
  transform: translateY(-180%);
}

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

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

.site-header {
  position: relative;
  z-index: 20;
  width: min(100%, calc(var(--content-width) + 2 * var(--page-gutter)));
  min-height: 4.875rem;
  margin: 0 auto;
  padding: 1.35rem var(--page-gutter) 1.1rem;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  border-bottom: 1px solid var(--line);
}

.site-brand {
  display: inline-flex;
  align-items: baseline;
  width: max-content;
  gap: 0.8rem;
}

.site-brand__primary {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.site-brand__secondary,
.language-switcher,
.nav-toggle,
.eyebrow {
  font-family: var(--mono);
  font-size: 0.6875rem;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-brand__secondary,
.eyebrow {
  color: var(--muted);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.2vw, 2rem);
}

.site-nav a,
.language-switcher,
.text-link,
.directory-list a {
  position: relative;
  transition: color 220ms ease;
}

.site-nav a {
  display: block;
  padding: 0.35rem 0;
  font-size: 0.8125rem;
}

.site-nav a::after,
.language-switcher::after,
.text-link::after,
.directory-list a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 240ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.language-switcher:hover,
.language-switcher:focus-visible,
.text-link:hover,
.text-link:focus-visible,
.directory-list a:hover,
.directory-list a:focus-visible {
  color: var(--accent);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after,
.language-switcher:hover::after,
.language-switcher:focus-visible::after,
.text-link:hover::after,
.text-link:focus-visible::after,
.directory-list a:hover::after,
.directory-list a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

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

.language-switcher {
  padding: 0.4rem 0;
  color: var(--paper);
}

.nav-toggle {
  display: none;
  border: 0;
  padding: 0.4rem 0;
  background: transparent;
  cursor: pointer;
}

.page-shell,
.site-footer {
  width: min(100%, calc(var(--content-width) + 2 * var(--page-gutter)));
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.home-hero {
  min-height: calc(100svh - 4.875rem);
  display: grid;
  grid-template-rows: 1fr auto;
  padding: clamp(3.5rem, 9vh, 7rem) 0 2.35rem;
}

.home-hero__statement {
  align-self: center;
}

.home-hero__statement .eyebrow {
  margin-bottom: clamp(1.75rem, 4vh, 2.75rem);
}

.home-hero h1 {
  max-width: 78rem;
  margin-bottom: 2rem;
  font-family: var(--serif);
  font-size: clamp(4.75rem, 8.8vw, 8.25rem);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.home-hero h1 > span {
  display: block;
}

.hero-line--mobile {
  display: none !important;
}

.accent-mark {
  color: var(--accent);
}

.home-hero__footer {
  display: grid;
  grid-template-columns: minmax(17.5rem, 39rem) auto;
  align-items: end;
  justify-content: space-between;
  gap: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}

.home-hero__footer > p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  white-space: nowrap;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  border: 1px solid var(--accent);
  font-size: 0.875rem;
  transition:
    background-color 220ms ease,
    transform 220ms ease;
}

.button--primary {
  background: var(--accent);
  color: var(--coal);
}

.button--primary:hover,
.button--primary:focus-visible {
  background: #d0785d;
  transform: translateY(-2px);
}

.text-link {
  padding: 0.65rem 0;
  font-size: 0.875rem;
}

.home-act {
  padding-top: var(--section-space);
}

.act-heading {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(20rem, 2fr);
  gap: clamp(2rem, 5vw, 6rem);
  align-items: start;
  margin-bottom: clamp(3rem, 7vw, 6.5rem);
}

.act-heading h2,
.section-lead p,
.about-intro p {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.025em;
}

.act-heading h2 {
  max-width: 52rem;
  margin-bottom: 0;
  font-size: clamp(2.3rem, 4vw, 4.5rem);
  line-height: 1.15;
}

.act-heading--compact h2 {
  font-size: clamp(2rem, 3.4vw, 3.75rem);
}

.directory-list {
  counter-reset: directory;
  border-top: 1px solid var(--line);
}

.directory-list li {
  counter-increment: directory;
}

.directory-list a {
  display: grid;
  grid-template-columns: minmax(12rem, 0.8fr) 1.6fr;
  gap: 2rem;
  padding: clamp(1.4rem, 2.5vw, 2.25rem) 0;
  border-bottom: 1px solid var(--line);
}

.directory-list a::before {
  content: "0" counter(directory);
  position: absolute;
  top: 0.55rem;
  left: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
}

.directory-list a::after {
  bottom: -1px;
}

.directory-list span:first-child {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.5vw, 2.5rem);
  line-height: 1.2;
}

.directory-list span:last-child {
  align-self: center;
  color: var(--muted);
  font-size: 0.9375rem;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.channel-card {
  min-height: clamp(15rem, 24vw, 22rem);
  padding: clamp(1.25rem, 2.2vw, 2rem);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition:
    border-color 220ms ease,
    background-color 220ms ease,
    transform 220ms ease;
}

.channel-card:hover,
.channel-card:focus-visible {
  position: relative;
  z-index: 1;
  border-color: var(--accent);
  background: var(--coal-raised);
  transform: translateY(-3px);
}

.channel-card > span {
  color: var(--muted);
  font-size: 0.8125rem;
}

.channel-card strong {
  margin-top: auto;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 2.5vw, 2.75rem);
  font-weight: 400;
  line-height: 1;
}

.channel-card small {
  min-height: 3.5em;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.6;
}

.channel-card--tools {
  position: relative;
  z-index: 1;
  border-color: var(--accent);
}

.channel-card--tools small {
  color: var(--accent);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.case-card {
  min-height: clamp(15rem, 24vw, 22rem);
  padding: clamp(1.25rem, 2.5vw, 2.25rem);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border: 1px solid var(--line);
  transition:
    border-color 220ms ease,
    background-color 220ms ease,
    transform 220ms ease;
}

.case-card:is(a):hover,
.case-card:is(a):focus-visible {
  border-color: var(--accent);
  background: var(--coal-raised);
  transform: translateY(-3px);
}

.case-card > .eyebrow,
.case-card__media {
  margin-bottom: auto;
}

.case-card__media {
  margin: calc(-1 * clamp(1.25rem, 2.5vw, 2.25rem));
  margin-bottom: 2rem;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  aspect-ratio: 4 / 3;
}

.case-card__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.case-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: auto;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.case-card h3 {
  margin-bottom: 0.35rem;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.5vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
}

.case-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.case-card__status {
  width: max-content;
  margin-top: 1.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.section-cases {
  margin-top: var(--section-space);
}

.section-cases__heading {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(22rem, 2fr);
  gap: clamp(2rem, 5vw, 6rem);
  margin-bottom: clamp(3rem, 7vw, 6.5rem);
}

.section-cases__heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 3.4vw, 3.75rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.section-cases .case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.site-footer {
  margin-top: var(--section-space);
  padding-top: clamp(4.5rem, 9vw, 8rem);
  padding-bottom: 2rem;
  border-top: 1px solid var(--line);
}

.site-footer__statement {
  margin-bottom: clamp(5rem, 11vw, 10rem);
  font-family: var(--serif);
  font-size: clamp(3rem, 7.4vw, 7rem);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.site-footer__statement p {
  margin: 0;
}

.site-footer__meta {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.site-footer__identity,
.filing-placeholders {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.625rem;
  line-height: 1.8;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-footer__identity p,
.filing-placeholders {
  margin-bottom: 0;
}

.filing-placeholders {
  display: flex;
  gap: 1.5rem;
  text-align: right;
}

.section-shell,
.about-shell {
  padding-top: clamp(5rem, 10vw, 9rem);
}

.section-hero {
  min-height: min(39rem, 68svh);
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(22rem, 2fr);
  grid-template-rows: auto 1fr;
  gap: 2rem clamp(2rem, 5vw, 6rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.section-hero h1,
.about-hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(4.75rem, 9vw, 8.5rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.section-question {
  grid-column: 2;
  align-self: end;
  max-width: 48rem;
  margin: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3vw, 3.2rem);
  line-height: 1.25;
}

.section-content {
  padding-top: clamp(5rem, 10vw, 9rem);
}

.section-lead {
  display: grid;
  grid-template-columns: 1fr 2fr;
  margin-bottom: clamp(5rem, 10vw, 9rem);
}

.section-lead p {
  grid-column: 2;
  max-width: 56rem;
  margin: 0;
  font-size: clamp(2rem, 3.7vw, 4rem);
  line-height: 1.2;
}

.content-frame {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(22rem, 2fr);
  gap: clamp(2rem, 5vw, 6rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.content-frame h2 {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scope-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.scope-list li,
.product-list li {
  min-height: 6.5rem;
  padding: 1.2rem 1.5rem 1.2rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.scope-list li:nth-child(-n + 2),
.product-list li:first-child {
  border-top: 0;
}

.section-status {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(22rem, 2fr);
  gap: clamp(2rem, 5vw, 6rem);
  margin-top: clamp(4rem, 8vw, 7rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.section-status p {
  margin: 0;
  color: var(--muted);
}

.tool-spotlight {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 6rem);
  align-items: end;
  margin-bottom: clamp(5rem, 10vw, 9rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--accent);
}

.tool-spotlight h2 {
  margin: 1.5rem 0 0;
  font-family: var(--serif);
  font-size: clamp(3.5rem, 7vw, 7rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.05em;
}

.tool-spotlight p:last-child {
  max-width: 30rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.product-list li {
  display: grid;
  grid-template-columns: minmax(10rem, 0.7fr) 1.3fr;
  gap: 2rem;
}

.product-list strong {
  color: var(--paper);
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 400;
}

.about-hero {
  min-height: min(43rem, 75svh);
  display: flex;
  flex-direction: column;
  padding-bottom: clamp(4rem, 8vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.about-hero h1 {
  margin-top: auto;
}

.about-tagline {
  max-width: 52rem;
  margin: 2.5rem 0 0 auto;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.5vw, 3.75rem);
  line-height: 1.2;
}

.about-body {
  display: grid;
  grid-template-columns: minmax(20rem, 2fr) minmax(12rem, 0.7fr);
  gap: clamp(3rem, 8vw, 9rem);
  padding-top: clamp(5rem, 10vw, 9rem);
}

.about-intro p {
  font-size: clamp(1.8rem, 3.25vw, 3.4rem);
  line-height: 1.3;
}

.about-intro p + p {
  margin-top: 1.5em;
}

.about-credit {
  padding-top: 0.65rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.about-credit p {
  margin-bottom: 0.25rem;
}

.reveal-ready [data-reveal] {
  opacity: 0;
  transform: translateY(0.75rem);
  transition:
    opacity 260ms ease,
    transform 260ms ease;
}

.reveal-ready [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 64rem) {
  .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .channel-card:last-child {
    grid-column: span 2;
    min-height: 12rem;
  }
}

@media (max-width: 48rem) {
  :root {
    --section-space: clamp(6rem, 26vw, 8.5rem);
  }

  .site-header {
    min-height: 4rem;
    grid-template-columns: 1fr auto auto;
    padding-top: 1rem;
    padding-bottom: 0.85rem;
    gap: 1rem;
  }

  .site-brand {
    gap: 0.5rem;
  }

  .site-brand__primary {
    font-size: 1.15rem;
  }

  .site-brand__secondary {
    font-size: 0.5625rem;
  }

  .nav-toggle {
    display: block;
    grid-column: 3;
    grid-row: 1;
  }

  .language-switcher {
    grid-column: 2;
    grid-row: 1;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: var(--page-gutter);
    left: var(--page-gutter);
    padding: 0.75rem 1.25rem 1.25rem;
    border: 1px solid var(--line);
    background: var(--coal);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-0.5rem);
    transition:
      opacity 200ms ease,
      transform 200ms ease,
      visibility 200ms;
  }

  .site-nav[data-open] {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-nav ul {
    display: block;
  }

  .site-nav a {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.875rem;
  }

  .home-hero {
    min-height: calc(100svh - 4rem);
    padding: clamp(2.75rem, 9vh, 5rem) 0 1.5rem;
  }

  .home-hero h1 {
    max-width: 22rem;
    font-size: clamp(3.35rem, 14.2vw, 4.2rem);
    line-height: 1.06;
  }

  .hero-line--desktop {
    display: none !important;
  }

  .hero-line--mobile {
    display: block !important;
  }

  .home-hero__footer {
    display: block;
    padding-top: 1.1rem;
  }

  .home-hero__footer > p {
    max-width: 22rem;
    font-size: 0.8125rem;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr auto;
    margin-top: 1.5rem;
  }

  .button,
  .text-link {
    font-size: 0.8125rem;
  }

  .act-heading,
  .section-hero,
  .content-frame,
  .section-status {
    display: block;
  }

  .act-heading .eyebrow,
  .section-hero .eyebrow,
  .content-frame h2 {
    margin-bottom: 1.75rem;
  }

  .act-heading h2 {
    font-size: clamp(2.2rem, 10vw, 3rem);
  }

  .directory-list a {
    display: block;
    padding: 1.65rem 0;
  }

  .directory-list span {
    display: block;
  }

  .directory-list span:first-child {
    margin-bottom: 0.65rem;
  }

  .channel-grid,
  .case-grid,
  .scope-list {
    grid-template-columns: 1fr;
  }

  .channel-card,
  .channel-card:last-child {
    grid-column: auto;
    min-height: 12.5rem;
  }

  .case-grid {
    gap: 0.75rem;
  }

  .case-card {
    min-height: 13rem;
  }

  .section-cases__heading {
    display: block;
  }

  .section-cases__heading .eyebrow {
    margin-bottom: 1.75rem;
  }

  .section-cases .case-grid {
    grid-template-columns: 1fr;
  }

  .site-footer__statement {
    margin-bottom: 5rem;
    font-size: clamp(2.8rem, 13.5vw, 4rem);
    line-height: 1.02;
  }

  .site-footer__meta {
    display: block;
  }

  .filing-placeholders {
    display: block;
    margin-top: 1.5rem;
    text-align: left;
  }

  .filing-placeholders span {
    display: block;
  }

  .section-shell,
  .about-shell {
    padding-top: clamp(4rem, 18vw, 6rem);
  }

  .section-hero {
    min-height: 34rem;
  }

  .section-hero h1,
  .about-hero h1 {
    font-size: clamp(4.25rem, 20vw, 6rem);
  }

  .section-question {
    margin-top: clamp(5rem, 25vw, 9rem);
    font-size: clamp(1.8rem, 8vw, 2.6rem);
  }

  .section-lead {
    display: block;
  }

  .section-lead p {
    font-size: clamp(2rem, 9vw, 2.8rem);
  }

  .scope-list li {
    min-height: auto;
    padding: 1.2rem 0;
  }

  .scope-list li:nth-child(2) {
    border-top: 1px solid var(--line);
  }

  .section-status p {
    margin-top: 1rem;
  }

  .tool-spotlight {
    display: block;
  }

  .tool-spotlight h2 {
    font-size: clamp(4rem, 19vw, 5.5rem);
  }

  .tool-spotlight p:last-child {
    margin-top: 3rem;
  }

  .product-list li {
    display: block;
    padding-right: 0;
  }

  .product-list strong,
  .product-list span {
    display: block;
  }

  .product-list span {
    margin-top: 0.5rem;
  }

  .about-hero {
    min-height: 37rem;
  }

  .about-tagline {
    margin-top: auto;
    font-size: clamp(1.9rem, 8.5vw, 2.7rem);
  }

  .about-body {
    display: block;
  }

  .about-intro p {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  .about-credit {
    margin-top: 5rem;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }

  .reveal-ready [data-reveal] {
    opacity: 1;
    transform: none;
  }
}