/*
  ALATYR — alatyr-programming-language.github.io
  One static page. No build step, no framework, no JavaScript.
*/

:root {
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --display: "Arial Narrow", "Helvetica Neue", var(--sans);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, "PingFang SC", "Noto Sans CJK SC", monospace;
  --ease: cubic-bezier(.22, .8, .28, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: #111;
  background: #f4f1e9;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body,
a { -webkit-tap-highlight-color: transparent; }

a { font: inherit; color: inherit; }

::selection { background: #baff67; color: #0d1110; }

h1,
h2,
h3,
p { margin: 0; }

code,
pre { font-family: var(--mono); }

pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Shared site anatomy. */
.site-brand { display: inline-flex; align-items: center; gap: 11px; min-width: 0; color: inherit; text-decoration: none; }
.org-logo { display: block; flex: 0 0 auto; width: 30px; height: 30px; }
.site-brand-label { white-space: nowrap; }
.site-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 31px; }
.site-hero-actions a { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: 0 15px; border: 1px solid var(--site-accent); color: inherit; font: 700 10px/1 var(--mono); letter-spacing: .08em; text-decoration: none; text-transform: uppercase; transition: background .2s, color .2s, transform .2s; }
.site-hero-actions a:hover { transform: translateY(-2px); }
.site-hero-actions .hero-primary { background: var(--site-accent); color: var(--site-accent-ink); }
.site-hero-actions .hero-primary:hover { background: transparent; color: inherit; }
.site-hero-actions .hero-secondary:hover { background: var(--site-accent); color: var(--site-accent-ink); }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 35px 0 70px; border-top: 1px solid currentColor; }
.site-footer .site-brand { gap: 13px; font: 800 30px/1 var(--display); letter-spacing: -.02em; }

/* The page — a terminal palette on a bento grid. */
.index-page {
  --index-bg: #0d1110;
  --index-panel: #121a17;
  --index-line: #26362e;
  --index-ink: #e6f5df;
  --index-dim: #759181;
  --index-green: #baff67;
  --index-orange: #ffb35d;
  --site-bg: var(--index-bg);
  --site-accent: var(--index-green);
  --site-accent-ink: var(--index-bg);
  background: var(--index-bg);
  color: var(--index-ink);
}

.landing-shell { width: min(1240px, calc(100% - 48px)); margin: 0 auto; }

.landing-hero { padding: 62px 0 78px; border-bottom: 1px solid var(--index-line); }
.landing-hero-main { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: clamp(32px, 5vw, 72px); align-items: center; }
.landing-hero h1 { font: 800 clamp(56px, 8.6vw, 121px)/.9 var(--display); letter-spacing: -.055em; }
.landing-hero-copy > p { max-width: 620px; margin-top: 24px; color: var(--index-dim); font-size: clamp(17px, 1.55vw, 21px); line-height: 1.5; }
.landing-hero-cta { flex: 0 0 auto; flex-direction: column; align-items: center; gap: 15px; margin-top: 0; }
.landing-hero-cta a { font-size: clamp(17px, 1.55vw, 21px); letter-spacing: .04em; }
.site-topbar { display: flex; justify-content: flex-end; padding-top: 26px; }
.language-switcher { display: flex; gap: 3px; padding: 4px; border: 1px solid var(--index-line); border-radius: 999px; }
.language-switcher a,
.language-switcher span { display: inline-flex; min-width: 40px; align-items: center; justify-content: center; border-radius: 999px; padding: 8px 10px; color: var(--index-dim); font: 700 10px/1 var(--mono); letter-spacing: .06em; text-decoration: none; transition: background .2s, color .2s; }
.language-switcher a:hover { color: var(--index-ink); }
.language-switcher .active { background: var(--index-green); color: var(--index-bg); }
.landing-hero-cta .hero-primary { min-height: 62px; padding: 0 30px; }
.landing-hero-cta .hero-secondary { min-height: auto; padding: 0; border: 0; color: var(--index-green); }
.landing-hero-cta .hero-secondary:hover { background: transparent; color: var(--index-ink); text-decoration: underline; text-underline-offset: 5px; transform: none; }
.landing-code-panel { overflow: hidden; border: 1px solid var(--index-line); border-radius: 10px; background: #0a0e0d; box-shadow: 0 20px 55px rgb(0 0 0 / 22%); }
.landing-code-panel-top { display: flex; align-items: center; justify-content: space-between; gap: 15px; min-height: 43px; padding: 0 16px; border-bottom: 1px solid var(--index-line); color: var(--index-dim); font: 10px/1 var(--mono); }
.landing-code-panel-top span:first-child { color: var(--index-ink); font-weight: 400; }
.landing-code-panel pre { min-height: 310px; padding: 30px 27px; color: var(--index-ink); font: 13px/1.82 var(--mono); }
.terminal-comment { color: #718477; }
.terminal-keyword { color: var(--index-orange); }
.terminal-type { color: #8cdbff; }
.terminal-name { color: var(--index-green); }
.terminal-number { color: #f2a7bd; }
.landing-section-head h2 { max-width: 1000px; font: 800 clamp(42px, 5.5vw, 76px)/.9 var(--display); letter-spacing: -.055em; }
.landing-principles { padding-top: 78px; }
.landing-bento { display: grid; grid-template-columns: repeat(12, 1fr); gap: 12px; margin-top: 40px; padding-bottom: 86px; }
.landing-card { display: flex; min-height: 230px; flex-direction: column; justify-content: space-between; grid-column: span 6; padding: 23px; border: 1px solid var(--index-line); border-radius: 12px; background: var(--index-panel); }
.landing-card-main { min-height: 310px; grid-column: span 7; background: var(--index-green); color: var(--index-bg); }
.landing-card-transparent { grid-column: span 5; }
.landing-card-label { color: var(--index-green); font: 700 10px/1.2 var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.landing-card-main .landing-card-label { color: var(--index-bg); }
.landing-card h3 { margin-top: 44px; font: 700 clamp(28px, 3.7vw, 51px)/.86 var(--mono); letter-spacing: -.085em; }
.landing-card p { max-width: 320px; margin-top: 19px; color: var(--index-dim); font-size: 13px; line-height: 1.5; }
.landing-card p code { color: var(--index-ink); }
.landing-card-main code { align-self: flex-start; padding: 9px 11px; border: 1px solid rgb(13 17 16 / 32%); border-radius: 6px; font-size: 12px; }
.landing-card-transparent h3 { color: var(--index-ink); }
.landing-card-zero h3 { color: var(--index-orange); }
.landing-card-checked h3 { color: var(--index-green); }
.landing-card code { color: inherit; }

.landing-syntax { padding: 80px 0 88px; border-top: 1px solid var(--index-line); border-bottom: 1px solid var(--index-line); }
.landing-syntax-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 50px; align-items: start; margin-top: 39px; }
.landing-syntax-copy > p { max-width: 560px; color: var(--index-dim); font-size: 22px; line-height: 1.55; }
.landing-syntax-copy > p code { color: var(--index-ink); font-size: 21px; }
.landing-syntax-points { display: grid; gap: 0; margin-top: 31px; border-top: 1px solid var(--index-line); }
.landing-syntax-points > div { display: grid; grid-template-columns: minmax(215px, .8fr) 1fr; gap: 24px; padding: 19px 0; border-bottom: 1px solid var(--index-line); }
.landing-syntax-points > div > code { color: var(--index-green); font-size: 16px; }
.landing-syntax-points span { color: var(--index-dim); font: 16px/1.45 var(--mono); }
.landing-syntax-points span code { color: var(--index-ink); }
.landing-code-panel { box-shadow: none; }
.landing-code-panel pre { min-height: 320px; }

.index-page .site-footer { border-color: var(--index-line); }
.index-page .site-footer .site-brand { color: var(--index-ink); }
.site-footer-links { display: flex; flex-wrap: wrap; align-items: center; gap: 22px; color: var(--index-dim); font: 700 10px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.site-footer-links a { color: var(--index-green); text-decoration: none; }
.site-footer-links a:hover { color: var(--index-ink); text-decoration: underline; text-underline-offset: 4px; }

/* CJK: полноширинные знаки не переносят плотный интерлиньяж и отрицательный трекинг. */
html[lang^="zh"] .landing-hero h1,
html[lang^="zh"] .landing-section-head h2,
html[lang^="zh"] .landing-card h3 { letter-spacing: 0; line-height: 1.2; }
html[lang^="zh"] .landing-card h3 { font-size: clamp(26px, 3.2vw, 42px); }
html[lang^="zh"] .landing-hero h1 { letter-spacing: -.01em; }

@media (max-width: 900px) {
  .site-topbar { justify-content: center; }
  .landing-hero-main { grid-template-columns: 1fr; gap: 34px; align-items: start; text-align: center; }
  .landing-hero-copy > p { margin-right: auto; margin-left: auto; }
  .landing-syntax-grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 640px) {
  .landing-shell { width: calc(100% - 28px); }
  .landing-hero { padding: 44px 0 58px; }
  .landing-hero-main { padding-bottom: 38px; }
  .landing-hero h1 { font-size: 53px; }
  .landing-hero-copy > p { font-size: 16px; }
  .landing-hero-cta { gap: 18px; }
  .landing-section-head h2 { font-size: 45px; }
  .landing-principles { padding-top: 62px; }
  .landing-bento { grid-template-columns: 1fr; margin-top: 29px; padding-bottom: 62px; }
  .landing-card,
  .landing-card-main,
  .landing-card-transparent { grid-column: 1 / -1; min-height: 220px; }
  .landing-card-main { min-height: 265px; }
  .landing-card h3 { margin-top: 32px; }
  .landing-syntax { padding: 62px 0 66px; }
  .landing-syntax-grid { margin-top: 29px; }
  .landing-syntax-points > div { grid-template-columns: 1fr; gap: 8px; }
  .landing-code-panel pre { min-height: 285px; padding: 24px 15px; font-size: 11px; }
      }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}