/* Забытые системы — общий слой оформления.
   Ссылка на шрифты стоит в самих страницах: так первая отрисовка не ждёт CSS. */

:root {
  --ground:    #F7F7F4;
  --surface:   #FFFFFF;
  --ink:       #16181C;
  --ink-soft:  #3D424A;
  --grey:      #676C74;
  --rule:      #DCDDD8;
  --rule-soft: #E9EAE6;
  --blue:      #1F4E9C;
  --red:       #A8201A;
  --wash-blue: #EDF1F8;
  --wash-red:  #F9EDEC;

  --f-display: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --f-body:    "Source Serif 4", Georgia, "Times New Roman", serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ground:    #131519;
    --surface:   #191C21;
    --ink:       #E9EAE6;
    --ink-soft:  #C2C6C9;
    --grey:      #969CA4;
    --rule:      #2B2F37;
    --rule-soft: #22262C;
    --blue:      #7FA8E8;
    --red:       #E58573;
    --wash-blue: #1A2130;
    --wash-red:  #2A1D1B;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 1.0625rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

.sheet { max-width: 54rem; margin: 0 auto; padding: 0 2rem 6rem; }
@media (max-width: 40rem) { .sheet { padding: 0 1.25rem 4rem; } }

/* ─── Шапка ─── */
.masthead { padding: 4rem 0 2.5rem; }
.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red);
  margin: 0 0 1.35rem;
}
.eyebrow a { color: inherit; }

h1 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.022em;
  text-wrap: balance;
  margin: 0 0 1.15rem;
}
.standfirst {
  font-size: 1.24rem;
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 34rem;
  margin: 0;
  text-wrap: pretty;
}

h2 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.55rem;
  letter-spacing: -0.014em;
  line-height: 1.2;
  text-wrap: balance;
  margin: 0 0 1rem;
}
h3 {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.02rem;
  margin: 0 0 0.3rem;
}

p { margin: 0 0 1.05rem; text-wrap: pretty; max-width: 36rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

strong { font-weight: 600; }
code {
  font-family: var(--f-mono);
  font-size: 0.855em;
  background: var(--rule-soft);
  padding: 0.1em 0.34em;
  border-radius: 2px;
}
pre {
  font-family: var(--f-mono);
  font-size: 0.86rem;
  background: var(--surface);
  border: 1px solid var(--rule);
  padding: 0.9rem 1.05rem;
  overflow-x: auto;
  line-height: 1.55;
}
pre code { background: none; padding: 0; font-size: 1em; }

section { border-top: 1px solid var(--rule); padding: 2.75rem 0; }

/* ─── Полоса чисел ─── */
.figures {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  margin: 2.5rem 0 0;
}
.figure { background: var(--ground); padding: 1.05rem 1.1rem 1.15rem; }
.figure b {
  display: block;
  font-family: var(--f-display);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  margin-bottom: 0.28rem;
  color: var(--blue);
}
.figure span {
  font-family: var(--f-mono);
  font-size: 0.68rem;
  line-height: 1.45;
  color: var(--grey);
  display: block;
}

/* ─── Главная кнопка ─── */
.cta {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--f-display);
  font-size: 1.08rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--ground);
  background: var(--ink);
  padding: 0.82rem 1.5rem;
  border: 1px solid var(--ink);
  transition: background 0.12s ease, color 0.12s ease;
}
.cta:hover { background: var(--blue); border-color: var(--blue); color: #fff; }
.cta .hint {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 400;
  opacity: 0.75;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 0.85rem; align-items: center; margin: 1.5rem 0 0; }
.cta.ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.cta.ghost:hover { background: transparent; border-color: var(--blue); color: var(--blue); }

/* ─── Список проектов серии ─── */
.projects { display: flex; flex-direction: column; gap: 0; margin: 0; padding: 0; list-style: none; }
.project {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 1.5rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--rule-soft);
  align-items: baseline;
}
.project:last-child { border-bottom: 0; }
.project h3 { margin: 0; }
.project h3 a { text-decoration: none; }
.project h3 a:hover { text-decoration: underline; }
.project p { grid-column: 1; margin: 0; font-size: 0.95rem; color: var(--ink-soft); max-width: 34rem; }
.status {
  font-family: var(--f-mono);
  font-size: 0.66rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 0.22rem 0.5rem;
  border: 1px solid var(--rule);
  color: var(--grey);
  grid-row: 1;
  grid-column: 2;
}
.status.live { color: var(--red); border-color: var(--red); }
@media (max-width: 34rem) {
  .project { grid-template-columns: 1fr; }
  .status { grid-column: 1; grid-row: auto; justify-self: start; }
}

/* ─── Нумерованный список шагов ─── */
ol.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
ol.steps > li {
  counter-increment: s;
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--rule-soft);
}
ol.steps > li:last-child { border-bottom: 0; }
ol.steps > li::before {
  content: counter(s, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 0.73rem;
  font-weight: 500;
  color: var(--red);
  padding-top: 0.3rem;
  font-variant-numeric: tabular-nums;
}
ol.steps > li > * { grid-column: 2; }
ol.steps p { font-size: 0.95rem; color: var(--ink-soft); margin: 0; }

.note {
  background: var(--wash-red);
  border-left: 2px solid var(--red);
  padding: 0.95rem 1.15rem;
  margin: 1.5rem 0 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
  max-width: 36rem;
}
.note strong { color: var(--ink); }

.chapters { columns: 2; column-gap: 2.5rem; margin: 0; padding: 0; list-style: none; }
.chapters li { break-inside: avoid; padding: 0.3rem 0; font-size: 0.95rem; }
@media (max-width: 34rem) { .chapters { columns: 1; } }

footer {
  border-top: 1px solid var(--rule);
  padding-top: 1.6rem;
  margin-top: 2.5rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  line-height: 1.75;
  color: var(--grey);
}
footer a { color: var(--grey); }

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