/* SPORUM — лендинг и блог. Минимализм: системные шрифты, одна колонка, два цвета сторон. */
:root {
  --bg: #f4f5f3;
  --panel: #ffffff;
  --fg: #131617;
  --muted: #5b6561;
  --line: #dcdfdc;
  --side-a: #b97a14;
  --side-b: #13857e;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --measure: 44rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1012;
    --panel: #161b1d;
    --fg: #e8edeb;
    --muted: #97a29e;
    --line: #2b3337;
    --side-a: #e3a845;
    --side-b: #3cbdb2;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 var(--font); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--side-b); }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--side-b); outline-offset: 3px; }
.wrap { max-width: 60rem; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left)); padding-right: max(20px, env(safe-area-inset-right)); }
.muted { color: var(--muted); }

.top { border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.logo { font-weight: 800; letter-spacing: 0.12em; text-decoration: none; display: inline-flex; align-items: center; gap: 10px; font-size: 18px; }
.dots { display: inline-flex; }
.dots i { width: 12px; height: 12px; border-radius: 50%; display: block; }
.dots i:first-child { background: var(--side-a); }
.dots i:last-child { background: var(--side-b); margin-left: -4px; opacity: 0.9; }
nav { display: flex; gap: 20px; font-size: 15px; }
nav a { text-decoration: none; }

h1, h2 { line-height: 1.15; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(34px, 6vw, 56px); letter-spacing: -0.02em; font-weight: 750; }
h2 { font-size: 26px; letter-spacing: -0.01em; font-weight: 700; }
h3 { font-size: 20px; }
.eyebrow { font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.eyebrow a { text-decoration: none; }

.hero { padding-block: 72px 40px; max-width: var(--measure); }
.hero.small { padding-block: 48px 16px; }
.lead { font-size: 20px; color: var(--muted); margin: 20px 0 0; }
.motto { margin: 24px 0 0; padding-left: 14px; border-left: 3px solid var(--side-a); font-weight: 600; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.btn { display: inline-block; padding: 12px 18px; border-radius: 10px; border: 1px solid var(--line); text-decoration: none; font-weight: 600; font-size: 16px; background: var(--panel); }
.btn.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn.primary:hover { color: var(--bg); opacity: 0.9; }

.block { padding-block: 40px; border-top: 1px solid var(--line); max-width: var(--measure); }
.block p { margin: 16px 0 0; }
.steps { margin: 20px 0 0; padding-left: 22px; display: grid; gap: 12px; }
.steps li::marker { font-weight: 700; color: var(--muted); }
.challenge h2 { color: var(--fg); }
.grid { list-style: none; padding: 0; margin: 20px 0 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 20px 28px; }
.grid li { display: grid; gap: 4px; }
.grid span { color: var(--muted); font-size: 16px; }

.posts { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 4px; max-width: var(--measure); }
.posts a { display: grid; gap: 2px; padding: 14px 0; text-decoration: none; border-bottom: 1px solid var(--line); }
.posts .date { font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.posts .ptitle { font-weight: 700; font-size: 20px; }
.posts .pdesc { color: var(--muted); font-size: 16px; }

.post { max-width: var(--measure); padding-block: 48px 24px; }
.post h1 { font-size: clamp(30px, 5vw, 44px); margin-bottom: 8px; }
.post h2 { margin-top: 40px; font-size: 24px; }
.post h3 { margin-top: 28px; }
.post p, .post ul, .post ol { margin: 16px 0 0; }
.post li { margin-top: 6px; }
.post blockquote { margin: 20px 0 0; padding-left: 16px; border-left: 3px solid var(--side-b); color: var(--muted); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9em; background: var(--panel); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; }

.foot { border-top: 1px solid var(--line); margin-top: 48px; padding-block: 28px 40px; font-size: 14px; }
.foot p { margin: 4px 0; }

@media (max-width: 520px) {
  body { font-size: 16px; }
  .hero { padding-block: 48px 28px; }
  .lead { font-size: 18px; }
}