:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  --paper: #111214;
  --ink: #eceef1;
  --muted: #b9bec7;
  --caption: #9a9fa7;
  --line: #ffffff20;
  --focus: #a6bdd7;
  --gutter: clamp(1.25rem, 5vw, 5rem);
  --page-width: 82rem;
}

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

body {
  margin: 0;
  line-height: 1.6;
}

h1, h2, p {
  margin: 0;
}

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

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

.page-width {
  width: min(100% - 2 * var(--gutter), var(--page-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  z-index: 1;
  inset: 0.75rem auto auto var(--gutter);
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(calc(-100% - 1rem));
}

.skip-link:focus {
  transform: none;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  column-gap: 1rem;
}

.site-header {
  padding-block: clamp(1.125rem, 2.4vw, 2.25rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-inline-start: -0.1875rem;
  min-height: 2.75rem;
}

.brand span, .footer-wordmark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.375rem;
  letter-spacing: -0.035em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0 clamp(0.875rem, 2.8vw, 2.5rem);
}

.site-nav a, .text-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--muted);
  font-size: 0.875rem;
  text-underline-offset: 0.3em;
}

.site-nav a:hover, .text-link:hover {
  color: var(--ink);
  text-decoration: underline;
}

.text-link {
  text-decoration: underline;
  text-decoration-color: #ffffff50;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.76fr) minmax(0, 1.24fr);
  align-items: center;
  gap: clamp(1.25rem, 3vw, 3rem);
  padding-top: clamp(1rem, 3vw, 3rem);
  padding-bottom: clamp(5rem, 10vw, 9rem);
}

.hero h1 {
  font-size: clamp(2.375rem, 4.3vw, 4.125rem);
  font-weight: 500;
  line-height: 1.16;
  letter-spacing: -0.045em;
}

.hero h1 span {
  display: block;
}

:lang(en) .hero h1 {
  text-wrap: balance;
}

.hero p, .feature p {
  max-width: 24em;
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.9;
}

.hero .button {
  margin-top: 2rem;
}

.hero-media {
  margin: 0;
}

.screenshot-credit {
  margin-top: 0.375rem;
  color: var(--caption);
  font-size: 0.875rem;
  text-align: end;
}

.screenshot-credit a {
  display: inline-block;
  padding-block: 0.125rem;
  text-decoration: underline;
  text-underline-offset: 0.3em;
}

.screenshot-credit a:hover {
  color: var(--ink);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 2.875rem;
  padding: 0.5rem 1rem;
  border: 1px solid #dce0e5;
  border-radius: 0.625rem;
  background: linear-gradient(#eceef1, #d6dae0);
  color: #24282d;
  font-size: 0.875rem;
  font-weight: 600;
}

.button:hover {
  background: #f2f3f5;
}

.button:active {
  background: #cdd2d9;
}

.button-secondary {
  border-color: #ffffff38;
  background: #ffffff09;
  color: var(--ink);
}

.button-secondary:hover {
  border-color: #ffffff58;
  background: #ffffff13;
}

.button-secondary:active {
  background: #ffffff0c;
}

.button svg {
  flex: none;
}

.screenshot {
  display: block;
  width: 100%;
  height: auto;
}

.book-screenshot {
  border-radius: 0.625rem;
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  margin-block: 0 clamp(5rem, 11vw, 10rem);
  scroll-margin-top: 2rem;
}

.feature .screenshot {
  grid-area: 1 / 1;
}

.feature-copy {
  grid-column: 2;
}

.feature-reversed {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
}

.feature-reversed .screenshot {
  grid-area: 1 / 2;
}

.feature-reversed .feature-copy {
  grid-column: 1;
  padding-inline-start: clamp(0rem, 4vw, 4rem);
}

h2 {
  font-size: clamp(1.85rem, 3.25vw, 3.125rem);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.04em;
}

.feature-copy h2 span {
  display: inline-block;
}

.more-features {
  margin-bottom: clamp(3.5rem, 8vw, 7rem);
}

.more-features h2 {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.25rem, 3vw, 2rem) clamp(1.5rem, 5vw, 5rem);
  margin: clamp(1.5rem, 4vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
}

.feature-list h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.feature-list p {
  margin-top: 0.375rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

.download {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: end;
  gap: clamp(1.5rem, 5vw, 5rem);
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  border-block: 1px solid var(--line);
}

.download-version {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
}

.download-version [aria-hidden="true"] {
  margin-inline: 0.125rem;
}

.download-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.download-links [hidden] {
  display: none;
}

.download-note {
  margin-top: 0.75rem;
  color: var(--caption);
  font-size: 0.875rem;
}

.site-footer {
  padding-block: 1.5rem 2rem;
}

.footer-wordmark {
  color: var(--caption);
  font-size: 1.125rem;
}

@media (max-width: 56rem) {
  .hero, .feature, .feature-reversed, .download {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    gap: 2.25rem;
    padding-top: 2.25rem;
  }

  .hero h1 {
    font-size: clamp(2.25rem, 7.2vw, 4.125rem);
  }

  .feature .screenshot, .feature-copy, .feature-reversed .feature-copy {
    grid-area: auto;
    padding: 0;
  }

  .hero p, .feature p {
    margin-top: 1rem;
  }

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

@media (max-width: 32rem) {
  .feature-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 23rem) {
  .download-links .button {
    width: 100%;
  }
}