@font-face {
  font-family: "Nocturne Serif";
  src: url("fonts/noto-serif-sc-headings.woff2") format("woff2");
  font-weight: 700 900;
  font-style: normal;
  font-display: swap;
}
:root {
  color-scheme: light;
  --paper: #f3f4f7;
  --layer: #ebedf2;
  --line: #d5d8e0;
  --ink: #1c1f28;
  --body: #3a404c;
  --secondary: #4a5160;
  --caption: #5d6472;
  --moon: #4b3f94;
  --serif: "Nocturne Serif", "Songti SC", SimSun, serif;
  --mono: "Cascadia Mono", Consolas, "JetBrains Mono", monospace;
  scroll-behavior: smooth;
  scrollbar-color: var(--caption) var(--paper);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
::selection {
  color: var(--paper);
  background: var(--moon);
}
a {
  color: var(--moon);
  text-underline-offset: 0.25em;
  text-decoration-thickness: 1px;
  transition:
    color 180ms ease,
    background-color 180ms ease;
}
a:hover {
  color: #2e2566;
}
a:focus-visible {
  outline: 2px solid var(--moon);
  outline-offset: 6px;
  border-radius: 2px;
}
p,
h1,
h2,
h3,
figure {
  margin: 0;
}
h1,
h2 {
  font-family: var(--serif);
  text-wrap: balance;
}
h1 {
  font-size: clamp(40px, 3.4vw, 48px);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: -0.035em;
}
h2 {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: -0.025em;
}
h3 {
  font-size: 18px;
  font-weight: 650;
  line-height: 1.6;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
.wrap {
  width: min(1120px, calc(100% - 64px));
  margin-inline: auto;
}
.skip-link {
  position: absolute;
  top: 12px;
  left: 16px;
  transform: translateY(-200%);
  padding: 8px 16px;
  background: var(--ink);
  color: var(--paper);
  z-index: 10;
}
.skip-link:focus {
  transform: translateY(0);
}
.masthead {
  min-height: 92px;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 32px;
  padding-block: 24px;
  border-bottom: 1px solid var(--line);
}
.wordmark {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: -0.025em;
  text-decoration: none;
}
.masthead nav {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  flex: 1;
  font-size: 14px;
}
.masthead nav a {
  color: var(--secondary);
  text-decoration: none;
  position: relative;
}
.masthead nav a::after {
  content: "";
  position: absolute;
  height: 1px;
  background: var(--moon);
  left: 0;
  right: 0;
  bottom: -5px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 220ms ease;
}
.masthead nav a:hover::after {
  transform: scaleX(1);
}
.nav-num {
  color: var(--moon);
  margin-right: 7px;
  font-variant-numeric: tabular-nums;
}
.languages {
  display: flex;
  gap: 9px;
  align-items: baseline;
  font-size: 13px;
  color: var(--caption);
}
.languages a {
  color: var(--caption);
}
.languages [aria-current] {
  color: var(--ink);
}
.hero {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 64px;
  align-items: end;
  padding-block: 78px 64px;
}
.moon {
  display: block;
  width: 76px;
  height: 76px;
  margin: 0 0 20px -9px;
  fill: var(--moon);
}
.hero h1 span {
  display: block;
  text-wrap: initial;
}
.hero-copy {
  padding-bottom: 8px;
}
.hero-copy > p {
  font-size: 17px;
  line-height: 1.95;
  color: var(--body);
  max-width: 31em;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: 26px;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  background: var(--ink);
  color: var(--paper);
  padding: 12px 23px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 550;
  line-height: 1.75;
  transition:
    background-color 180ms ease,
    transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
.button:hover {
  background: var(--moon);
  color: var(--paper);
  transform: translateY(-2px);
}
.button svg,
.text-link svg {
  width: 16px;
  height: 16px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  transition: transform 220ms ease;
}
.button:hover svg {
  transform: translateY(2px);
}
.text-link {
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.text-link:hover svg {
  transform: translateX(3px);
}
.all-releases {
  display: inline-block;
  font-size: 13px;
  margin-top: 13px;
  color: var(--caption);
}
.hero-figure {
  padding-bottom: 80px;
}
.hero-figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 5px;
}
figcaption {
  font-size: 13px;
  line-height: 1.8;
  color: var(--caption);
  margin-top: 12px;
}
.caption-number {
  color: var(--moon);
  margin-right: 12px;
}
.chapter {
  border-top: 1px solid var(--line);
  scroll-margin-top: 24px;
}
.chapter-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
  padding-block: 80px;
}
.chapter-intro {
  align-self: start;
}
.number {
  display: block;
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  color: var(--moon);
  margin-bottom: 18px;
}
.chapter-intro p {
  color: var(--secondary);
  margin-top: 17px;
  max-width: 25em;
}
.uses {
  display: grid;
  gap: 30px;
}
.use {
  border-top: 1px solid var(--ink);
  padding-top: 14px;
  display: grid;
  grid-template-columns: 1fr 208px;
  gap: 22px;
  align-items: start;
}
.use p {
  color: var(--secondary);
  font-size: 14px;
  margin-top: 8px;
  line-height: 1.85;
}
.use figure {
  margin-top: 4px;
}
.use img {
  width: 208px;
  height: 140px;
  object-fit: cover;
  object-position: top left;
  border: 1px solid var(--line);
  border-radius: 3px;
}
.use .phone-image {
  object-fit: contain;
  object-position: center;
  background: var(--layer);
}
.features {
  background: var(--layer);
}
.features-inner {
  padding-block: 74px 80px;
}
.chapter-title {
  display: flex;
  align-items: baseline;
  gap: 28px;
}
.chapter-title .number {
  margin: 0;
}
.feature-copy {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px 64px;
  margin-top: 42px;
  color: var(--body);
}
.feature-copy strong {
  color: var(--ink);
  font-weight: 650;
}
code,
pre {
  font-family: var(--mono);
  font-size: 0.875em;
}
.install-options {
  display: grid;
  gap: 30px;
}
.install-options p {
  color: var(--secondary);
  margin-top: 9px;
}
.install-options .actions {
  margin-top: 18px;
}
.install-options pre {
  margin: 14px 0 0;
  padding: 18px 20px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  line-height: 1.9;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.install-options pre code {
  font-size: 13px;
}
footer {
  padding-block: 26px 42px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  color: var(--caption);
  font-size: 13px;
}
footer a {
  color: var(--caption);
}
footer .back-top {
  margin-left: auto;
}
html[lang="en"] h1 {
  font-size: clamp(40px, 3.4vw, 48px);
  line-height: 1.18;
  letter-spacing: -0.04em;
}
html[lang="en"] .hero {
  grid-template-columns: 1.1fr 1fr;
}
html[lang="en"] .hero-copy > p {
  font-size: 17px;
}
@media (prefers-reduced-motion: no-preference) {
  .moon {
    animation: moonrise 900ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }
  @keyframes moonrise {
    from {
      transform: translateY(12px) rotate(-12deg);
    }
    to {
      transform: translateY(0) rotate(0);
    }
  }
}
@media (max-width: 1000px) {
  .hero {
    gap: 36px;
    grid-template-columns: 1fr 1fr;
  }
  h1 {
    font-size: 48px;
  }
  .chapter-grid {
    gap: 40px;
    grid-template-columns: 0.7fr 1.3fr;
  }
  .use {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .use img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
  }
  .use .phone-image {
    height: 210px;
    aspect-ratio: auto;
  }
}
@media (max-width: 700px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .masthead {
    gap: 12px 22px;
    padding-block: 20px;
  }
  .wordmark {
    flex: 1;
  }
  .languages {
    order: 1;
  }
  .masthead nav {
    order: 2;
    flex-basis: 100%;
    gap: 26px;
    font-size: 13px;
  }
  .hero,
  html[lang="en"] .hero {
    grid-template-columns: 1fr;
    padding-block: 42px 36px;
    gap: 27px;
  }
  .moon {
    width: 62px;
    height: 62px;
    margin-bottom: 18px;
  }
  h1 {
    font-size: 40px;
    line-height: 1.4;
    letter-spacing: -0.04em;
  }
  .hero-copy > p,
  html[lang="en"] .hero-copy > p {
    font-size: 16px;
  }
  .hero-figure {
    padding-bottom: 48px;
  }
  .actions {
    gap: 14px 18px;
    margin-top: 22px;
  }
  .button {
    padding: 12px 19px;
  }
  .chapter-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 48px;
  }
  h2 {
    font-size: 28px;
  }
  .number {
    font-size: 46px;
    margin-bottom: 14px;
  }
  .chapter-intro p {
    margin-top: 12px;
    max-width: none;
  }
  .use {
    grid-template-columns: 1fr;
    gap: 17px;
  }
  .use p {
    font-size: 15px;
  }
  .use img {
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
  }
  .use .phone-image {
    height: 260px;
    aspect-ratio: auto;
  }
  .features-inner {
    padding-block: 48px;
  }
  .chapter-title {
    gap: 22px;
  }
  .feature-copy {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 30px;
  }
  .install-options pre {
    padding: 15px;
  }
  footer {
    gap: 12px 20px;
    padding-bottom: 32px;
  }
}
@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}