:root {
  color-scheme: dark;
  --bg: #101417;
  --surface: #171d20;
  --surface-strong: #20282c;
  --text: #f2efe7;
  --muted: #a8b2ad;
  --line: #2d393d;
  --accent: #71e8c2;
  --accent-strong: #f5d06f;
  --danger: #f07f5a;
  --shadow: rgba(0, 0, 0, 0.35);
  --content-width: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(113, 232, 194, 0.08), transparent 260px),
    linear-gradient(135deg, rgba(245, 208, 111, 0.06), transparent 36%),
    var(--bg);
  color: var(--text);
  font-family:
    ui-monospace,
    "SFMono-Regular",
    "Menlo",
    "Consolas",
    "Liberation Mono",
    monospace;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(16, 20, 23, 0.88);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas: "title nav language";
  align-items: center;
  gap: 22px;
  width: min(100% - 32px, var(--content-width));
  margin: 0 auto;
  padding: 18px 0;
}

.site-title {
  grid-area: title;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.site-title__mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 3px rgba(113, 232, 194, 0.08);
}

.site-nav {
  grid-area: nav;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-nav a {
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--accent);
}

.language-switcher {
  grid-area: language;
  display: inline-flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  background: rgba(16, 20, 23, 0.72);
}

.language-switcher a {
  min-width: 38px;
  min-height: 32px;
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 0.82rem;
  text-decoration: none;
}

.language-switcher a:hover,
.language-switcher a:focus-visible,
.language-switcher a[aria-current="true"] {
  background: var(--surface-strong);
  color: var(--accent);
}

.site-main {
  width: min(100% - 32px, var(--content-width));
  margin: 0 auto;
  padding: 56px 0 44px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 390px);
  gap: 34px;
  align-items: end;
}

.intro {
  max-width: 760px;
}

.intro__meta {
  margin-bottom: 18px;
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.intro h1 {
  margin: 0;
  color: var(--text);
  font-size: clamp(2.6rem, 8vw, 5.6rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.intro p {
  max-width: 680px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.6vw, 1.2rem);
}

.signal-panel {
  min-height: 250px;
  padding: 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(113, 232, 194, 0.06) 1px, transparent 1px),
    linear-gradient(180deg, rgba(113, 232, 194, 0.06) 1px, transparent 1px),
    var(--surface);
  background-size: 22px 22px;
  box-shadow: 0 18px 60px var(--shadow);
}

.signal-panel__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.signal-panel__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 34px;
}

.signal-panel__grid span,
.signal-panel__grid a {
  display: grid;
  min-height: 62px;
  place-items: center;
  border: 1px solid var(--line);
  background: rgba(16, 20, 23, 0.72);
  color: var(--text);
  font-weight: 700;
}

.signal-panel__grid span:nth-child(2) {
  color: var(--accent-strong);
}

.signal-panel__grid span:nth-child(3) {
  color: var(--danger);
}

.signal-panel__line {
  height: 3px;
  margin-top: 28px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong), var(--danger));
}

.site-sections {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.text-block {
  padding: 22px;
  border: 1px solid var(--line);
  background: rgba(23, 29, 32, 0.76);
}

.text-block__label {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.text-block h2 {
  margin: 0;
  font-size: 1.2rem;
  line-height: 1.35;
}

.text-block p:last-child {
  margin: 14px 0 0;
  color: var(--muted);
}

.content-panel {
  margin-top: 18px;
  padding: 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(32, 40, 44, 0.88), rgba(23, 29, 32, 0.92));
  box-shadow: 0 18px 60px var(--shadow);
}


.signal-panel__grid a {
  text-decoration: none;
}

.signal-panel__grid a:hover,
.signal-panel__grid a:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

.download-hero {
  max-width: 820px;
}

.download-hero__kicker {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.download-hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 4.8rem);
  line-height: 0.95;
}

.download-hero p {
  max-width: 720px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2.6vw, 1.16rem);
}

.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  gap: 20px;
  align-items: start;
  margin-top: 34px;
}

.download-copy p:first-child {
  margin-top: 0;
}

.download-copy p {
  color: var(--muted);
}

.download-copy code {
  color: var(--accent-strong);
}

.download-card {
  padding: 22px;
  border: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(113, 232, 194, 0.06) 1px, transparent 1px),
    linear-gradient(180deg, rgba(113, 232, 194, 0.06) 1px, transparent 1px),
    var(--surface);
  background-size: 22px 22px;
  box-shadow: 0 18px 60px var(--shadow);
}

.download-card__label {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.76rem;
  text-transform: uppercase;
}

.download-card h2 {
  margin: 0 0 18px;
  font-size: 1.15rem;
}

.download-card dl {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
}

.download-card dt {
  color: var(--muted);
  font-size: 0.74rem;
  text-transform: uppercase;
}

.download-card dd {
  margin: 4px 0 0;
}

.download-button {
  display: inline-flex;
  width: 100%;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--accent);
  background: rgba(113, 232, 194, 0.12);
  color: var(--accent);
  font-weight: 700;
  text-align: center;
  text-decoration: none;
}

.download-button:hover,
.download-button:focus-visible {
  background: rgba(113, 232, 194, 0.2);
  outline: none;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  width: min(100% - 32px, var(--content-width));
  margin: 0 auto;
  padding: 24px 0 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 760px) {
  .site-header__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "title language"
      "nav nav";
    align-items: center;
    gap: 14px;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 8px 16px;
    width: 100%;
  }

  .language-switcher a {
    min-width: 34px;
    min-height: 30px;
  }

  .site-main {
    padding-top: 40px;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .signal-panel {
    min-height: 220px;
  }

  .site-sections {
    grid-template-columns: 1fr;
  }

  .download-layout {
    grid-template-columns: 1fr;
  }

  .content-panel,
  .download-card,
  .text-block {
    padding: 18px;
  }
}

@media (max-width: 420px) {
  .signal-panel__grid {
    grid-template-columns: 1fr;
  }
}