:root {
  color-scheme: light;
  --paper: #f7f7f4;
  --white: #ffffff;
  --ink: #171717;
  --muted: #666762;
  --line: #c9cbc5;
  --teal: #1f6f65;
  --rust: #b7482a;
  --yellow: #d7a928;
  --serif: "Literata", "Noto Serif SC", "Songti SC", serif;
  --sans: "Noto Sans SC", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --page: min(1240px, calc(100vw - 64px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
}

body:has(dialog[open]) {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.24em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 8px 12px;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-160%);
}

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

.site-header {
  width: var(--page);
  min-height: 88px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.25;
  text-decoration: none;
}

.wordmark-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--white);
  font-family: var(--serif);
  font-size: 13px;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  font-weight: 600;
}

nav a {
  text-decoration: none;
}

nav a:hover {
  color: var(--teal);
}

.github-link {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.hero {
  width: var(--page);
  margin: 0 auto;
  padding: clamp(48px, 6vh, 72px) 0 32px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: clamp(36px, 5vh, 56px);
}

.hero-copy {
  max-width: 1000px;
}

.hero h1 {
  max-width: 920px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(52px, 7vw, 104px);
  font-weight: 650;
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-copy > p {
  max-width: 760px;
  margin: 30px 0 18px;
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.6;
}

.text-link {
  display: inline-block;
  color: var(--teal);
  font-weight: 600;
}

.hero-strip {
  min-height: 220px;
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 16px;
  align-self: end;
}

.hero-image,
.example button {
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: transparent;
  cursor: zoom-in;
}

.hero-image {
  height: clamp(210px, 23vw, 300px);
}

.hero-image img,
.example img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 280ms ease;
}

.hero-image img {
  object-position: center;
}

.hero-image:hover img,
.example button:hover img {
  transform: scale(1.015);
}

.language-edition {
  width: var(--page);
  margin: 0 auto;
  padding: 120px 0;
  border-top: 1px solid var(--ink);
}

.edition-header {
  display: grid;
  grid-template-columns: 1fr 3fr;
  align-items: start;
  margin-bottom: 120px;
}

.edition-number {
  color: var(--rust);
  font-family: var(--serif);
  font-size: 18px;
}

.edition-header h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(48px, 7vw, 92px);
  line-height: 1;
  letter-spacing: 0;
}

.edition-header p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 32px;
  margin-bottom: 140px;
}

.intro-grid h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.22;
  letter-spacing: 0;
}

.intro-grid .prose {
  grid-column: 2 / 4;
  max-width: 800px;
  font-size: clamp(17px, 1.7vw, 21px);
}

.prose p {
  margin: 0 0 1.25em;
}

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

.section-heading {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 32px;
  align-items: end;
  margin-bottom: 44px;
}

.section-heading > p {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.section-heading h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(38px, 5vw, 70px);
  font-weight: 650;
  line-height: 1.08;
  letter-spacing: 0;
}

.modes {
  margin-bottom: 150px;
}

.mode-list {
  border-top: 1px solid var(--ink);
}

.mode-row {
  min-height: 180px;
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 32px;
  align-items: start;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.mode-index {
  color: var(--rust);
  font-family: var(--serif);
}

.mode-row h4 {
  margin: 0 0 14px;
  font-size: clamp(20px, 2.2vw, 29px);
  line-height: 1.35;
  letter-spacing: 0;
}

.mode-row p {
  max-width: 690px;
  margin: 0;
  color: var(--muted);
}

.mode-status {
  justify-self: end;
  padding: 5px 0;
  color: var(--muted);
  border-bottom: 2px solid var(--yellow);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.status-live {
  color: var(--teal);
  border-color: var(--teal);
}

.examples {
  margin-bottom: 112px;
}

.examples-heading {
  grid-template-columns: 1fr 2fr 1fr;
}

.examples-heading > span {
  justify-self: end;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
}

.example-groups {
  display: grid;
  gap: 52px;
}

.example-group h4 {
  margin: 0 0 16px;
  padding-top: 14px;
  border-top: 1px solid var(--ink);
  font-family: var(--serif);
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: 0;
}

.example-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.example {
  min-width: 0;
  margin: 0;
}

.example button {
  background: #e8e8e3;
}

.example img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.portrait-example-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 620px) minmax(0, 1fr);
}

.portrait-example-group h4,
.portrait-example-group .example-links {
  grid-column: 1 / -1;
}

.example-portrait {
  grid-column: 2;
}

.example-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 24px;
}

.use-section {
  padding-top: 80px;
  border-top: 1px solid var(--ink);
}

.use-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  margin-left: 25%;
}

.source-scope {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 32px;
  margin-top: 64px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.source-scope h4,
.source-scope p {
  margin: 0;
}

.source-scope h4 {
  font-family: var(--serif);
  font-size: 20px;
  letter-spacing: 0;
}

.source-scope p {
  color: var(--muted);
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

pre {
  margin: 0;
  padding: 26px;
  overflow-x: auto;
  background: var(--ink);
  color: var(--white);
  border-left: 5px solid var(--teal);
  font-size: 13px;
  line-height: 1.75;
}

.english-edition {
  padding-bottom: 140px;
}

.english-edition .intro-grid h3,
.english-edition .edition-header h2,
.english-edition .section-heading h3 {
  font-family: var(--serif);
}

footer {
  width: var(--page);
  min-height: 150px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--ink);
  font-size: 13px;
  font-weight: 600;
}

footer div {
  display: flex;
  gap: 28px;
}

.lightbox {
  width: min(96vw, 1500px);
  max-width: none;
  height: 94vh;
  max-height: none;
  padding: 42px;
  overflow: auto;
  border: 0;
  background: #111;
}

.lightbox::backdrop {
  background: rgb(0 0 0 / 82%);
}

.lightbox img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 8px;
  right: 12px;
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--white);
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
}

@media (max-width: 800px) {
  :root {
    --page: calc(100vw - 32px);
  }

  .site-header {
    min-height: 72px;
  }

  .wordmark span:last-child {
    display: none;
  }

  nav {
    gap: 12px;
    font-size: 12px;
  }

  .github-link {
    padding-left: 12px;
  }

  .hero {
    padding: 48px 0 24px;
    gap: 48px;
  }

  .hero h1 {
    font-size: clamp(43px, 13vw, 68px);
    line-height: 1.02;
    overflow-wrap: anywhere;
  }

  .hero-copy > p {
    margin-top: 24px;
    font-size: 18px;
  }

  .hero-strip {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .hero-image {
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .hero-image:not(.hero-image-wide) {
    display: none;
  }

  .language-edition {
    padding: 80px 0;
  }

  .edition-header,
  .intro-grid,
  .section-heading,
  .mode-row,
  .examples-heading,
  .use-layout,
  .source-scope {
    grid-template-columns: 1fr;
  }

  .edition-header {
    gap: 24px;
    margin-bottom: 80px;
  }

  .edition-header h2 {
    font-size: 54px;
  }

  .intro-grid {
    gap: 24px;
    margin-bottom: 100px;
  }

  .intro-grid .prose {
    grid-column: auto;
  }

  .section-heading {
    gap: 4px;
    margin-bottom: 32px;
  }

  .section-heading h3 {
    font-size: 44px;
  }

  .modes,
  .examples {
    margin-bottom: 100px;
  }

  .mode-row {
    min-height: 0;
    gap: 12px;
    padding: 28px 0;
  }

  .mode-row h4 {
    font-size: 21px;
    overflow-wrap: anywhere;
  }

  .mode-status {
    justify-self: start;
  }

  .examples-heading > span {
    justify-self: start;
    margin-top: 8px;
  }

  .example-groups {
    gap: 36px;
  }

  .example-group h4 {
    margin-bottom: 14px;
    font-size: 24px;
  }

  .example-pair {
    gap: 8px;
  }

  .portrait-example-group {
    grid-template-columns: minmax(0, 1fr);
  }

  .example-portrait {
    grid-column: 1;
    width: min(100%, 620px);
    justify-self: center;
  }

  .example-links {
    display: grid;
    gap: 14px;
    margin-top: 18px;
  }

  .use-section {
    padding-top: 60px;
  }

  .use-layout {
    gap: 32px;
    margin-left: 0;
  }

  .source-scope {
    gap: 8px;
    margin-top: 44px;
  }

  footer {
    min-height: 180px;
    display: block;
    padding: 50px 0;
  }

  footer div {
    margin-top: 20px;
  }

  .lightbox {
    width: 100vw;
    height: 100vh;
    padding: 52px 12px 24px;
    overflow: auto;
    overscroll-behavior: contain;
  }

  .lightbox img {
    width: max(1200px, 100%);
    height: auto;
    max-width: none;
    object-fit: initial;
  }

  .lightbox-close {
    position: fixed;
    top: 6px;
    right: 8px;
    width: 44px;
    height: 44px;
    background: #111;
    font-size: 34px;
  }

  pre code {
    white-space: pre-wrap;
    overflow-wrap: anywhere;
  }
}

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

  .hero-image img,
  .example img {
    transition: none;
  }
}