/* =========================================================================
   Blinkx Analytics — main.css

   Идея. Сайт о том, что среднее скрывает распределение. Визуальный язык —
   графики: каждый раздел и каждая статья получают сгенерированный SVG-знак,
   построенный из собственных метаданных. Ноль растровых ассетов, ноль JS.

   Контраст несут композиция и масштаб, а не гарнитура: тёмные якорные
   полосы против светлой бумаги и резкий скачок кегля на заголовках.
   ========================================================================= */

:root {
  --abyss:      #0b1114;
  --abyss-2:    #121b1f;
  --ink:        #101619;
  --ink-soft:   #37454c;
  --muted:      #63737b;
  --muted-dim:  #8fa0a8;

  --paper:      #eceff0;
  --surface:    #ffffff;
  --rule:       #ccd4d7;
  --rule-soft:  #e0e5e7;

  /* Сигнал — медиана, норма, «в пределах» */
  --signal:     #0d6b64;
  --signal-lit: #1aa89d;
  --signal-dim: #d8ebe9;

  /* Хвост — p90, выброс, то, что среднее прячет. Только по смыслу. */
  --tail:       #a8681a;
  --tail-dim:   #f6ecdd;

  --font-display: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
  --font-body:    ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
  --font-mono:    ui-monospace, SFMono-Regular, "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --step--2: 0.72rem;
  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.92rem);
  --step-0:  clamp(1.02rem, 0.98rem + 0.2vw, 1.12rem);
  --step-1:  clamp(1.24rem, 1.12rem + 0.55vw, 1.5rem);
  --step-2:  clamp(1.6rem, 1.3rem + 1.3vw, 2.35rem);
  --step-3:  clamp(2.3rem, 1.6rem + 3.2vw, 4.2rem);
  --step-4:  clamp(2.8rem, 1.7rem + 4.6vw, 5.6rem);

  --measure: 66ch;
  --gutter: clamp(1.1rem, 4vw, 3rem);
  --rail: 16rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

table, time, .num { font-variant-numeric: tabular-nums; }

a { color: var(--signal); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--signal-lit); outline-offset: 3px; }
img, svg, video { max-width: 100%; }

.skip { position: absolute; left: -9999px; background: var(--abyss); color: #fff; padding: 0.6rem 1rem; }
.skip:focus { left: 0.5rem; top: 0.5rem; z-index: 50; }

.wrap { max-width: 80rem; margin-inline: auto; padding-inline: var(--gutter); }

/* ---------- Masthead -------------------------------------------------- */

.masthead { background: var(--abyss); color: #e6ecee; }
.masthead__in { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1.75rem; padding-block: 0.85rem; }
.masthead__mark {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-family: var(--font-mono); font-size: var(--step--1); font-weight: 600;
  color: #fff; text-decoration: none;
}
.masthead__mark svg { display: block; }
.masthead__nav { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-left: auto; font-size: var(--step--1); }
.masthead__nav a { color: #9db0b6; text-decoration: none; }
.masthead__nav a:hover { color: var(--signal-lit); }

/* ---------- Hero ------------------------------------------------------ */

.hero-dark { background: var(--abyss); color: #e9eef0; padding-block: clamp(3rem, 9vw, 6.5rem); }
.hero-dark__grid { display: grid; gap: clamp(2rem, 5vw, 3.5rem); align-items: center; }
@media (min-width: 60rem) { .hero-dark__grid { grid-template-columns: 1.05fr 0.95fr; } }

.hero-dark h1 {
  font-family: var(--font-display); font-size: var(--step-4); font-weight: 700;
  line-height: 0.95; letter-spacing: -0.04em; margin: 0 0 1.2rem; color: #fff; text-wrap: balance;
}
.hero-dark h1 em { font-style: normal; color: var(--signal-lit); }
.hero-dark p { font-size: var(--step-1); line-height: 1.45; color: #a9bcc2; margin: 0; max-width: 46ch; text-wrap: pretty; }
.hero-dark__eyebrow {
  font-family: var(--font-mono); font-size: var(--step--2);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--signal-lit); margin: 0 0 1.4rem;
}
.hero-dark__figure { margin: 0; }
.hero-dark__figure figcaption {
  font-family: var(--font-mono); font-size: var(--step--2);
  color: var(--muted-dim); margin-top: 0.9rem; line-height: 1.55;
}

.hero { padding-block: clamp(2.5rem, 6vw, 4.5rem); border-bottom: 2px solid var(--ink); display: grid; gap: 1.5rem; }
@media (min-width: 54rem) { .hero { grid-template-columns: 1fr auto; align-items: end; } }
.hero h1 {
  font-family: var(--font-display); font-size: var(--step-3); font-weight: 700;
  letter-spacing: -0.035em; line-height: 1.02; margin: 0 0 0.8rem; max-width: 20ch; text-wrap: balance;
}
.hero p { font-size: var(--step-1); color: var(--ink-soft); max-width: 54ch; margin: 0; text-wrap: pretty; }
.hero__mark { align-self: end; }

/* ---------- Калибровочная полоса — сигнатурный элемент ---------------- */

.calib { background: var(--abyss); color: #dbe4e7; padding: 1rem 1.05rem; }
.calib__head {
  font-family: var(--font-mono); font-size: var(--step--2);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--signal-lit); margin: 0 0 0.85rem;
}
.calib__row { display: flex; justify-content: space-between; gap: 1rem; font-family: var(--font-mono); font-size: 0.76rem; }
.calib__row + .calib__row { margin-top: 0.4rem; }
.calib__key { color: #7d9198; }
.calib__val { color: #fff; text-align: right; }
.calib__plot { margin: 0.95rem 0 0; display: block; }
.calib__note {
  margin: 0.75rem 0 0; padding-top: 0.75rem; border-top: 1px solid #223035;
  font-size: 0.74rem; line-height: 1.5; color: #8ea2a9;
}

/* ---------- Article --------------------------------------------------- */

.layout { display: grid; gap: clamp(1.5rem, 4vw, 3.5rem); padding-block: clamp(2rem, 5vw, 3.5rem); }
@media (min-width: 64rem) {
  .layout { grid-template-columns: var(--rail) minmax(0, 1fr); align-items: start; }
  .layout__rail { position: sticky; top: 1.25rem; }
}

.article { max-width: var(--measure); }

.article__kicker {
  display: inline-block; font-family: var(--font-mono); font-size: var(--step--2);
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--signal);
  border-bottom: 2px solid var(--signal); padding-bottom: 0.3rem; margin: 0 0 1.1rem;
}
.article h1 {
  font-family: var(--font-display); font-size: var(--step-3); font-weight: 700;
  line-height: 1.03; letter-spacing: -0.035em; margin: 0 0 1rem; text-wrap: balance;
}
.article__standfirst { font-size: var(--step-1); line-height: 1.45; color: var(--ink-soft); margin: 0 0 1.8rem; text-wrap: pretty; }
.article__byline {
  font-family: var(--font-mono); font-size: var(--step--2); color: var(--muted);
  border-top: 2px solid var(--ink); padding-top: 0.7rem; margin-bottom: 2.5rem;
}
.article__byline strong { color: var(--ink); font-weight: 600; }

.prose > * + * { margin-top: 1.1em; }
.prose p { text-wrap: pretty; }
.prose h2 {
  font-family: var(--font-display); font-size: var(--step-2); font-weight: 680;
  line-height: 1.14; letter-spacing: -0.025em;
  margin-top: 2.8em; padding-top: 1.1rem; border-top: 2px solid var(--ink); text-wrap: balance;
}
.prose h3 { font-size: var(--step-1); font-weight: 650; margin-top: 2.1em; letter-spacing: -0.015em; }
.prose ul, .prose ol { padding-left: 1.1rem; }
.prose li + li { margin-top: 0.4em; }
.prose li::marker { color: var(--signal); }
.prose blockquote {
  margin-inline: 0; padding: 1rem 1.15rem;
  background: var(--surface); border-left: 3px solid var(--tail); font-size: var(--step--1);
}
.prose blockquote > :first-child { margin-top: 0; }
.prose code {
  font-family: var(--font-mono); font-size: 0.86em; background: var(--surface);
  border: 1px solid var(--rule-soft); border-radius: 2px; padding: 0.1em 0.35em;
}
.prose pre { font-family: var(--font-mono); font-size: 0.82rem; background: var(--abyss); color: #cfdadd; padding: 1.1rem; overflow-x: auto; }
.prose pre code { background: none; border: 0; padding: 0; color: inherit; }

.tablewrap { overflow-x: auto; }
.prose table { width: 100%; border-collapse: collapse; font-size: var(--step--1); background: var(--surface); }
.prose th, .prose td { text-align: left; padding: 0.65rem 0.75rem; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
.prose thead th {
  font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: 0.08em;
  text-transform: uppercase; color: #fff; background: var(--abyss); border-bottom: 0; white-space: nowrap;
}
.prose tbody tr:last-child td { border-bottom: 0; }
.prose hr { border: 0; border-top: 2px solid var(--ink); margin-block: 2.6em; }

.draft {
  background: var(--tail-dim); border-left: 3px solid var(--tail); color: var(--tail);
  font-family: var(--font-mono); font-size: 0.78rem; padding: 0.75rem 0.95rem; margin-bottom: 1.8rem;
}

/* ---------- Rail ------------------------------------------------------ */

.rail-block { margin-top: 1.75rem; font-size: var(--step--1); }
.rail-block__title {
  font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: 0.13em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 0.7rem;
  padding-bottom: 0.4rem; border-bottom: 1px solid var(--rule);
}
.rail-block ol { list-style: none; margin: 0; padding: 0; counter-reset: r; }
.rail-block li { margin-bottom: 0.5rem; line-height: 1.35; display: flex; gap: 0.5rem; }
.rail-block li::before {
  counter-increment: r; content: counter(r, decimal-leading-zero);
  font-family: var(--font-mono); font-size: 0.68rem; color: var(--muted-dim); padding-top: 0.15em;
}
.rail-block a { color: var(--ink-soft); text-decoration: none; }
.rail-block a:hover { color: var(--signal); text-decoration: underline; }

/* ---------- Cards ----------------------------------------------------- */

.section-head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.75rem 1.5rem;
  padding-block: 2.75rem 1.25rem; border-bottom: 2px solid var(--ink);
}
.section-head h2 { font-family: var(--font-display); font-size: var(--step-2); font-weight: 680; letter-spacing: -0.025em; margin: 0; }
.section-head h2 a { color: var(--ink); text-decoration: none; }
.section-head h2 a:hover { color: var(--signal); }
.section-head p { margin: 0; color: var(--muted); max-width: 46ch; font-size: var(--step--1); }
.section-head__count { font-family: var(--font-mono); font-size: var(--step--2); color: var(--muted); margin-left: auto; }

.cards { display: grid; gap: 1px; background: var(--rule); border-bottom: 1px solid var(--rule); }
@media (min-width: 44rem) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 70rem) { .cards { grid-template-columns: repeat(3, 1fr); } }

.card { background: var(--surface); padding: 1.5rem 1.4rem 1.3rem; display: flex; flex-direction: column; gap: 0.6rem; transition: background 120ms ease; }
.card:hover { background: #fafcfc; }
.card__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.card__tag { font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: 0.11em; text-transform: uppercase; color: var(--signal); margin: 0; }
.card h3 { margin: 0; font-size: var(--step-1); font-weight: 660; line-height: 1.22; letter-spacing: -0.02em; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--signal); text-decoration: underline; }
.card p { margin: 0; font-size: var(--step--1); color: var(--ink-soft); }
.card__basis {
  margin-top: auto; padding-top: 0.9rem; border-top: 1px solid var(--rule-soft);
  font-family: var(--font-mono); font-size: var(--step--2); color: var(--muted);
  display: flex; align-items: center; gap: 0.5rem;
}

/* ---------- Subscribe ------------------------------------------------- */

.subscribe { background: var(--abyss); color: #e6ecee; padding: clamp(1.6rem, 4vw, 2.4rem); margin-top: 3.5rem; max-width: var(--measure); }
.subscribe--wide { max-width: none; margin-block: 3.5rem; }
.subscribe h2 { font-family: var(--font-display); font-size: var(--step-2); font-weight: 680; letter-spacing: -0.025em; margin: 0 0 0.5rem; color: #fff; }
.subscribe p { margin: 0 0 1.2rem; font-size: var(--step--1); color: #a1b4ba; max-width: 52ch; }
.subscribe__form { display: flex; flex-wrap: wrap; gap: 0.5rem; max-width: 34rem; }
.subscribe input[type="email"] {
  flex: 1 1 14rem; min-width: 0; font: inherit; font-size: var(--step--1);
  padding: 0.7rem 0.8rem; border: 1px solid #2b3a40; background: var(--abyss-2); color: #fff;
}
.subscribe input::placeholder { color: #6b7f86; }
.subscribe button { font: inherit; font-size: var(--step--1); font-weight: 600; padding: 0.7rem 1.3rem; border: 0; background: var(--signal-lit); color: var(--abyss); cursor: pointer; }
.subscribe button:hover { background: #23c4b7; }
.subscribe small { display: block; margin-top: 0.85rem; color: #7d9198; font-size: var(--step--2); font-family: var(--font-mono); }

/* ---------- Footer ---------------------------------------------------- */

.foot { background: var(--abyss); color: #8ea2a9; padding-block: 2.75rem 2rem; font-size: var(--step--1); }
.foot__cols { display: grid; gap: 2rem; }
@media (min-width: 46rem) { .foot__cols { grid-template-columns: 2fr 1fr 1fr; } }
.foot h2 { font-family: var(--font-mono); font-size: var(--step--2); letter-spacing: 0.13em; text-transform: uppercase; margin: 0 0 0.8rem; color: var(--signal-lit); }
.foot p { margin: 0; max-width: 40ch; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin-bottom: 0.4rem; }
.foot a { color: #b9c8cd; text-decoration: none; }
.foot a:hover { color: var(--signal-lit); text-decoration: underline; }
.foot__base { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid #1e2b30; font-family: var(--font-mono); font-size: var(--step--2); color: #63767d; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}