:root {
  color-scheme: light dark;

  --bg: #ffffff;
  --surface: #ffffff;
  --surface-muted: #f6f6f6;
  --text: #111111;
  --text-muted: #5c5c5c;
  --border: #d2d2d2;
  --primary: #111111;
  --accent: #5c5c5c;
  --link: #111111;
  --link-hover: #5c5c5c;
  --focus: #111111;
  --header-bg: rgb(255 255 255 / 0.92);
  --shadow: none;
  --hero-mark: url("/assets/logo_gray.svg");
  --hero-mark-opacity: 0.35;
  --hero-mark-opacity-mobile: 0.22;

  --header-h: 4.25rem;
  --wrap: 68rem;
  --space: 1.25rem;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1322;
    --surface: #161e30;
    --surface-muted: #111827;
    --text: #f3f4f6;
    --text-muted: #b4becd;
    --border: #2a3548;
    --primary: #e8edf5;
    --accent: #c5cdd8;
    --link: #dbe3ef;
    --link-hover: #ffffff;
    --focus: #e8edf5;
    --header-bg: rgb(12 19 34 / 0.88);
    --shadow: none;
    --hero-mark: url("/assets/logo_white.svg");
    --hero-mark-opacity: 0.14;
    --hero-mark-opacity-mobile: 0.1;
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--link);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--link-hover);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 100;
  background: var(--primary);
  color: var(--bg);
  padding: 0.5rem 0.85rem;
  text-decoration: none;
}

.skip-link:focus {
  top: 0.75rem;
  color: var(--bg);
}

.wrap {
  width: min(100% - 2rem, var(--wrap));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--header-bg);
  backdrop-filter: saturate(1.4) blur(16px);
  -webkit-backdrop-filter: saturate(1.4) blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}

.brand picture {
  display: block;
  line-height: 0;
}

.brand:hover {
  color: var(--text);
}

.logo {
  height: 40px;
  width: auto;
}

.wordmark {
  font-weight: 590;
  letter-spacing: -0.03em;
  font-size: 1.05rem;
}

.nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1.05rem;
}

.nav a {
  text-decoration: none;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--text);
}

.nav a[aria-current="page"] {
  font-weight: 560;
}

.lang {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 0.35rem;
  padding-left: 0.85rem;
  border-left: 1px solid var(--border);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  font-weight: 560;
}

.lang span[aria-current="true"] {
  color: var(--text);
}

.lang a {
  color: var(--text-muted);
  text-decoration: none;
}

.lang a:hover {
  color: var(--text);
}

.lang .sep {
  color: var(--border);
  font-weight: 400;
}

main {
  display: block;
}

.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: max(0px, calc((100% - var(--wrap)) / 2 - 1rem));
  top: 1.5rem;
  width: min(42vw, 18rem);
  height: min(52vw, 22rem);
  background: var(--hero-mark) no-repeat right top / contain;
  opacity: var(--hero-mark-opacity);
  pointer-events: none;
}

.kicker {
  margin: 0 0 0.85rem;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero h1 {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(2.35rem, 6vw, 4.15rem);
  line-height: 1.05;
  letter-spacing: -0.045em;
  font-weight: 590;
}

.lede {
  margin: 1.25rem 0 0;
  max-width: 38rem;
  font-size: 1.2rem;
  color: var(--text-muted);
}

.section {
  padding: 3.5rem 0;
}

.section-head {
  margin-bottom: 1.75rem;
}

.section h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.035em;
  font-weight: 590;
}

.section-intro {
  margin: 0;
  max-width: 40rem;
  color: var(--text-muted);
}

.cards {
  display: grid;
  gap: 1rem;
}

.card {
  padding: 1.5rem 1.35rem;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.card p {
  margin: 0;
  color: var(--text-muted);
}

.apps {
  background: var(--surface-muted);
  border-block: 1px solid var(--border);
}

.apps-panel {
  display: grid;
  gap: 0.85rem;
  max-width: 40rem;
}

.apps-status {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.horizon {
  height: 1px;
  margin-bottom: 1.5rem;
  background: linear-gradient(90deg, transparent, var(--border) 12%, var(--border) 88%, transparent);
}

.contact a {
  font-weight: 560;
}

.contact address,
.site-footer address {
  font-style: normal;
  margin: 0.65rem 0 0;
  color: var(--text-muted);
}

.site-footer address {
  margin-top: 0;
}

.page {
  padding: 3rem 0 4rem;
}

.page h1 {
  margin: 0 0 0.65rem;
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.meta {
  margin: 0 0 2rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin: 2.25rem 0 0.7rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.prose p,
.prose ul {
  color: var(--text-muted);
}

.prose ul {
  padding-left: 1.15rem;
}

.faq {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.faq details {
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 0.9rem 1.1rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 560;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "–";
}

.faq p {
  margin: 0.7rem 0 0;
  color: var(--text-muted);
}

.site-footer {
  padding: 2rem 0 2.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-inner {
  display: grid;
  gap: 0.85rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.15rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--text);
}

@media (min-width: 40rem) {
  .cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 48rem) {
  .header-inner {
    flex-wrap: wrap;
    min-height: auto;
    padding-block: 0.7rem;
  }

  .nav {
    flex: 1 1 100%;
    justify-content: flex-start;
    gap: 0.4rem 1rem;
    padding-top: 0.15rem;
  }

  .lang {
    margin-left: auto;
    border-left: none;
    padding-left: 0;
  }
}

@media (max-width: 40rem) {
  .hero {
    padding-top: 3.25rem;
  }

  .hero::after {
    opacity: var(--hero-mark-opacity-mobile);
    width: 9.5rem;
    height: 12rem;
    top: 0.5rem;
  }
}