:root {
  color-scheme: light;
  --accent: #1557d6;
  --accent-dark: #0d3f9f;
  --ink: #111318;
  --muted: #5d6470;
  --line: #dfe3e8;
  --surface: #f6f8fb;
  --page: #ffffff;
  --body-text: #343942;
  --feature-band: #f3f7ff;
  --media-border: #cdd2d9;
  --media-shadow: 0 24px 70px rgba(20, 30, 50, 0.15);
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

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

a:focus-visible {
  border-radius: 3px;
  outline: 3px solid rgba(21, 87, 214, 0.3);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 10;
  transform: translateY(-180%);
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  padding: 0.65rem 0.9rem;
}

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

.site-header,
.site-footer,
.home-main,
.document {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 104px;
  border-bottom: 1px solid var(--line);
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--ink);
  font-size: 1.35rem;
  font-weight: 720;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 11px;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: clamp(1rem, 3vw, 2.4rem);
}

.site-nav a {
  color: var(--accent);
  font-size: 0.97rem;
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4em;
}

.home-main {
  padding: clamp(5rem, 10vw, 9rem) 4.5% clamp(6rem, 11vw, 9rem);
}

.product-hero,
.feature-rail,
.story-section,
.tabs-section,
.community-section,
.open-source-section,
.legal-links {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.product-hero {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.4fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 6rem);
  min-height: min(790px, calc(100vh - 104px));
  padding-block: clamp(5rem, 9vw, 8rem);
}

.product-hero-copy h1 {
  margin: 0;
  max-width: 580px;
  font-size: clamp(3.7rem, 5.8vw, 5.2rem);
}

.product-hero-copy > p {
  max-width: 540px;
  margin: 1.7rem 0 0;
  color: var(--body-text);
  font-size: clamp(1.12rem, 1.8vw, 1.35rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.4rem;
  margin-top: 2.2rem;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  color: var(--accent);
  font-size: 0.98rem;
  font-weight: 650;
  text-decoration: none;
}

.primary-action {
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  padding: 0.65rem 1.15rem;
}

.primary-action:hover {
  background: var(--accent-dark);
  color: #fff;
}

.secondary-action::after {
  content: "›";
  margin-left: 0.42rem;
  font-size: 1.35em;
  line-height: 1;
}

.hero-screenshot,
.landscape-shot,
.wide-tabs-shot,
.phone-pair figure {
  margin: 0;
}

.hero-screenshot img,
.landscape-shot img,
.wide-tabs-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--media-border);
  border-radius: 22px;
  box-shadow: var(--media-shadow);
}

.feature-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-block: 1px solid var(--line);
}

.feature-rail article {
  padding: clamp(2.2rem, 4vw, 3.4rem);
}

.feature-rail article + article {
  border-left: 1px solid var(--line);
}

.feature-number {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 720;
  letter-spacing: 0.09em;
}

.feature-rail h2 {
  margin: 1.2rem 0 0.65rem;
  font-size: clamp(1.35rem, 2.3vw, 1.8rem);
  letter-spacing: -0.035em;
}

.feature-rail p,
.story-copy p,
.open-source-section p {
  margin: 0;
  color: var(--muted);
}

.story-section,
.tabs-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.72fr) minmax(0, 1.55fr);
  align-items: center;
  gap: clamp(3rem, 8vw, 7rem);
  padding-block: clamp(6rem, 11vw, 10rem);
}

.story-section + .story-section,
.tabs-section {
  border-top: 1px solid var(--line);
}

.story-ai {
  grid-template-columns: minmax(0, 1.55fr) minmax(240px, 0.72fr);
}

.story-ai .story-copy {
  grid-column: 2;
  grid-row: 1;
}

.story-ai .landscape-shot {
  grid-column: 1;
  grid-row: 1;
}

.story-copy h2,
.open-source-section h2 {
  margin: 0 0 1.2rem;
  font-size: clamp(2.5rem, 5.2vw, 4.7rem);
}

.story-copy p {
  font-size: clamp(1.03rem, 1.8vw, 1.22rem);
}

.plain-feature-list {
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.plain-feature-list li {
  position: relative;
  padding-left: 1.65rem;
  color: var(--body-text);
}

.plain-feature-list li + li {
  margin-top: 1rem;
}

.plain-feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 750;
}

.phone-story {
  grid-template-columns: minmax(0, 1fr) minmax(240px, 0.72fr);
  background: var(--feature-band);
  box-shadow: 50vw 0 var(--feature-band), -50vw 0 var(--feature-band);
}

.phone-pair {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: clamp(1rem, 3vw, 2.5rem);
}

.phone-pair figure {
  width: min(44%, 280px);
}

.phone-pair figure:first-child {
  transform: translateY(2.5rem);
}

.phone-pair img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--media-border);
  border-radius: 28px;
  box-shadow: var(--media-shadow);
}

.tabs-section {
  grid-template-columns: minmax(0, 1.35fr) minmax(240px, 0.65fr);
}

.community-section {
  padding-block: clamp(6rem, 11vw, 9rem);
  border-top: 1px solid var(--line);
}

.community-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 3rem;
}

.community-heading h2 {
  margin: 0;
  font-size: clamp(2.5rem, 5.2vw, 4.7rem);
}

.community-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.reaction-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(3rem, 6vw, 5rem);
  border-block: 1px solid var(--line);
}

.reaction-list blockquote {
  margin: 0;
  padding: clamp(2rem, 4vw, 3.2rem);
}

.reaction-list blockquote + blockquote {
  border-left: 1px solid var(--line);
}

.reaction-list p {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.25rem, 2.2vw, 1.65rem);
  font-weight: 620;
  line-height: 1.4;
  letter-spacing: -0.025em;
}

.reaction-list cite {
  display: block;
  margin-top: 1.4rem;
  color: var(--muted);
  font-size: 0.9rem;
  font-style: normal;
}

.reddit-link {
  display: inline-block;
  margin-top: 2rem;
  font-weight: 650;
}

.open-source-section {
  max-width: 780px;
  padding-block: clamp(7rem, 13vw, 12rem);
  text-align: center;
}

.open-source-section p {
  max-width: 670px;
  margin-inline: auto;
  font-size: 1.15rem;
}

.open-source-section .hero-actions {
  justify-content: center;
}

.legal-links {
  border-top: 1px solid var(--line);
}

.link-arrow {
  width: 24px;
  color: var(--accent);
}

.hero {
  max-width: 800px;
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

h1,
h2 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

h1 {
  margin: 0 0 1.3rem;
  font-size: clamp(3rem, 7vw, 5.25rem);
  font-weight: 760;
}

.hero p {
  max-width: 720px;
  margin: 0;
  color: var(--body-text);
  font-size: clamp(1.15rem, 2.2vw, 1.45rem);
  line-height: 1.48;
}

.document-links {
  border-top: 1px solid var(--line);
}

.document-link {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: 1.5rem;
  min-height: 148px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  text-decoration: none;
}

.document-link:hover {
  color: var(--ink);
}

.document-link:hover .document-link-title,
.document-link:hover .arrow {
  color: var(--accent-dark);
}

.document-icon {
  width: 42px;
  color: var(--accent);
}

.document-link-title {
  display: block;
  color: var(--accent);
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.document-link-description {
  display: block;
  margin-top: 0.2rem;
  color: var(--muted);
}

.arrow {
  color: var(--accent);
  font-size: 2.4rem;
  font-weight: 300;
  line-height: 1;
}

.document {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(0, 720px);
  justify-content: space-between;
  gap: clamp(3rem, 8vw, 7rem);
  padding-block: clamp(4rem, 8vw, 7rem);
}

.document-summary {
  align-self: start;
  position: sticky;
  top: 2rem;
}

.document-summary p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.document-content h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
}

.document-content h2 {
  margin: 3.6rem 0 0.9rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 720;
}

.document-content h3 {
  margin: 2rem 0 0.5rem;
  font-size: 1.05rem;
}

.document-content p,
.document-content li {
  color: var(--body-text);
}

.document-content ul {
  padding-left: 1.35rem;
}

.document-content li + li {
  margin-top: 0.65rem;
}

.notice {
  margin: 2.5rem 0;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  padding: 1.1rem 1.3rem;
}

.notice p {
  margin: 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--line);
  padding-block: 2rem 2.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --accent: #78a9ff;
    --accent-dark: #a9c8ff;
    --ink: #f3f5f8;
    --muted: #aeb6c2;
    --line: #303640;
    --surface: #181c22;
    --page: #0b0d10;
    --body-text: #c6ccd5;
    --feature-band: #111824;
    --media-border: #3a424e;
    --media-shadow: 0 24px 70px rgba(0, 0, 0, 0.46);
  }

  .primary-action {
    background: #2f6fe8;
    color: #fff;
  }

  .primary-action:hover {
    background: #4784ef;
    color: #fff;
  }

  .skip-link {
    background: var(--ink);
    color: var(--page);
  }
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    min-height: 0;
    padding-block: 1.25rem;
    gap: 1rem;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 0.85rem 1.35rem;
  }

  .home-main {
    padding-inline: 0;
  }

  .product-hero,
  .feature-rail,
  .story-section,
  .tabs-section,
  .community-section,
  .open-source-section,
  .legal-links {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .product-hero {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    min-height: 0;
    gap: 3.5rem;
  }

  .product-hero-copy h1 {
    font-size: clamp(3.4rem, 16vw, 5rem);
  }

  .feature-rail {
    display: block;
  }

  .feature-rail article {
    padding-inline: 0;
  }

  .feature-rail article + article {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .community-heading,
  .reaction-list {
    display: block;
  }

  .community-heading p {
    margin-top: 1.2rem;
  }

  .reaction-list blockquote {
    padding-inline: 0;
  }

  .reaction-list blockquote + blockquote {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .story-section,
  .tabs-section,
  .story-ai {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 3rem;
  }

  .story-ai .story-copy,
  .story-ai .landscape-shot {
    grid-column: auto;
    grid-row: auto;
  }

  .story-ai .story-copy,
  .phone-story .story-copy {
    order: -1;
  }

  .phone-story {
    padding-inline: 0;
  }

  .phone-pair figure {
    width: min(46%, 240px);
  }

  .phone-pair figure:first-child {
    transform: translateY(1.5rem);
  }

  .hero {
    margin-bottom: 4rem;
  }

  .document-link {
    grid-template-columns: 42px 1fr auto;
    gap: 1rem;
    min-height: 124px;
  }

  .document-icon {
    width: 34px;
  }

  .document-link-description {
    font-size: 0.9rem;
  }

  .document {
    display: block;
  }

  .document-summary {
    position: static;
    margin-bottom: 3rem;
  }

  .site-footer {
    display: block;
  }

  .site-footer p + p {
    margin-top: 0.5rem;
  }
}

@media (max-width: 420px) {
  .site-header,
  .site-footer,
  .home-main,
  .document {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .document-link {
    grid-template-columns: 1fr auto;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .document-icon {
    display: none;
  }
}

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