/* wind-tunnel — аэродинамический шаблон, namespace wtn */

:root {
  --wtn-bg: #0b1416;
  --wtn-surface: #122023;
  --wtn-accent: #5fd2c4;
  --wtn-accent2: #e08a4a;
  --wtn-text: #dfeceb;
  --wtn-muted: #8ba5a3;
  --wtn-line: rgba(95, 210, 196, .18);
  --wtn-radius: 4px 30px 30px 4px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--wtn-bg);
  background-image:
    repeating-linear-gradient(
      to bottom,
      rgba(95, 210, 196, .055) 0,
      rgba(95, 210, 196, .055) 1px,
      transparent 1px,
      transparent 9px
    );
  color: var(--wtn-text);
  font-family: "Source Code Pro", ui-monospace, monospace;
  font-size: 16px;
  line-height: 1.66;
  letter-spacing: .01em;
}

h1, h2, h3, .wtn-display {
  font-family: "Moderustic", "Source Code Pro", sans-serif;
  font-weight: 600;
  letter-spacing: -.005em;
  line-height: 1.22;
}

a { color: var(--wtn-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wtn-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ——— поток: горизонтальные линии тока ——— */
.wtn-flow {
  height: 54px;
  position: relative;
  overflow: hidden;
}
.wtn-flow::before,
.wtn-flow::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0, var(--wtn-accent) 14%, var(--wtn-accent2) 62%, transparent 100%);
  opacity: .5;
}
.wtn-flow::before { top: 20px; }
.wtn-flow::after { top: 34px; opacity: .25; }

/* ——— шапка ——— */
.wtn-top {
  border-bottom: 1px solid var(--wtn-line);
  background: rgba(11, 20, 22, .92);
}
.wtn-top-in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  padding: 16px 24px;
  max-width: 1080px;
  margin: 0 auto;
}
.wtn-mark {
  font-family: "Moderustic", sans-serif;
  font-size: 21px;
  color: var(--wtn-accent);
  border-left: 3px solid var(--wtn-accent2);
  padding-left: 11px;
}
.wtn-nav { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 13.5px; }
.wtn-nav a { color: var(--wtn-muted); }
.wtn-nav a:hover { color: var(--wtn-accent); }

/* ——— hero ——— */
.wtn-hero { padding: 42px 0 10px; }
.wtn-hero h1 {
  font-size: 40px;
  margin: 0 0 18px;
  max-width: 21ch;
}
.wtn-lead {
  font-size: 17px;
  max-width: 78ch;
  margin: 0 0 26px;
  color: #cfe0df;
}
.wtn-kpi {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin: 0 0 28px;
}
.wtn-kpi-cell {
  background: var(--wtn-surface);
  border-radius: var(--wtn-radius);
  border-left: 3px solid var(--wtn-accent);
  padding: 15px 16px 16px;
}
.wtn-kpi-cell:nth-child(even) { border-left-color: var(--wtn-accent2); }
.wtn-kpi-val {
  font-family: "Moderustic", sans-serif;
  font-size: 22px;
  color: var(--wtn-accent);
  display: block;
  line-height: 1.2;
}
.wtn-kpi-cell:nth-child(even) .wtn-kpi-val { color: var(--wtn-accent2); }
.wtn-kpi-cap {
  font-size: 12px;
  color: var(--wtn-muted);
  text-transform: uppercase;
  letter-spacing: .09em;
  display: block;
  margin-top: 6px;
}

/* ——— кнопки ——— */
.wtn-cta {
  display: inline-block;
  background: linear-gradient(97deg, var(--wtn-accent) 0, var(--wtn-accent2) 140%);
  color: #071012;
  font-family: "Moderustic", sans-serif;
  font-size: 16px;
  padding: 14px 34px;
  border-radius: 4px 26px 26px 4px;
  margin: 6px 0 10px;
}
.wtn-cta:hover { text-decoration: none; filter: brightness(1.08); }
.wtn-cta-note { font-size: 13px; color: var(--wtn-muted); margin: 0 0 6px; }

/* ——— секции ——— */
.wtn-sec { padding: 26px 0 8px; }
.wtn-sec h2 {
  font-size: 27px;
  margin: 0 0 6px;
  padding-left: 16px;
  border-left: 4px solid var(--wtn-accent2);
}
.wtn-sec h3 {
  font-size: 19px;
  color: var(--wtn-accent);
  margin: 22px 0 4px;
}
.wtn-sec p { margin: 12px 0; }
.wtn-sub {
  font-size: 13px;
  color: var(--wtn-muted);
  padding-left: 20px;
  margin: 0 0 12px;
  letter-spacing: .05em;
}

/* ——— обтекаемые карточки ——— */
.wtn-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(235px, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.wtn-card {
  background: var(--wtn-surface);
  border-radius: 30px 4px 30px 4px;
  padding: 18px 20px;
  border-top: 1px solid var(--wtn-line);
}
.wtn-card-h {
  font-family: "Moderustic", sans-serif;
  font-size: 16px;
  color: var(--wtn-accent2);
  display: block;
  margin-bottom: 6px;
}
.wtn-card p { margin: 6px 0 0; font-size: 14.5px; }

.wtn-em { color: var(--wtn-accent); }
.wtn-em2 { color: var(--wtn-accent2); }
.wtn-num {
  font-family: "Moderustic", sans-serif;
  color: var(--wtn-accent);
}

/* ——— списки ——— */
.wtn-list { margin: 12px 0; padding: 0; list-style: none; }
.wtn-list li {
  position: relative;
  padding: 5px 0 5px 26px;
  border-bottom: 1px dashed rgba(95, 210, 196, .12);
}
.wtn-list li::before {
  content: "»";
  position: absolute;
  left: 4px;
  color: var(--wtn-accent2);
}

/* ——— таблицы ——— */
.wtn-tw { overflow-x: auto; margin: 18px 0; border-radius: 4px 22px 22px 4px; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 520px;
  background: var(--wtn-surface);
}
caption {
  caption-side: top;
  text-align: left;
  font-size: 13px;
  color: var(--wtn-muted);
  padding: 0 0 8px;
  letter-spacing: .05em;
}
th {
  text-align: left;
  font-family: "Moderustic", sans-serif;
  font-weight: 600;
  font-size: 13px;
  color: var(--wtn-bg);
  background: var(--wtn-accent);
  padding: 10px 13px;
  white-space: nowrap;
}
td {
  padding: 9px 13px;
  border-top: 1px solid rgba(95, 210, 196, .12);
}
tbody tr:nth-child(even) { background: rgba(95, 210, 196, .045); }
tfoot td {
  background: rgba(224, 138, 74, .13);
  color: var(--wtn-accent2);
  font-family: "Moderustic", sans-serif;
  border-top: 2px solid var(--wtn-accent2);
}

/* ——— клуб ——— */
.wtn-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
  margin: 18px 0;
}
.wtn-step {
  background: var(--wtn-surface);
  border-radius: 4px 22px 22px 4px;
  padding: 14px 15px;
  border-bottom: 2px solid var(--wtn-accent);
}
.wtn-step:nth-child(3) { border-bottom-color: var(--wtn-accent2); }
.wtn-step:nth-child(5) { border-bottom-color: var(--wtn-accent2); }
.wtn-step-n {
  font-size: 11px;
  color: var(--wtn-muted);
  letter-spacing: .12em;
}
.wtn-step-t {
  font-family: "Moderustic", sans-serif;
  font-size: 17px;
  display: block;
  margin: 3px 0 5px;
}
.wtn-step p { margin: 0; font-size: 13px; color: var(--wtn-muted); }

/* ——— FAQ ——— */
.wtn-faq details {
  background: var(--wtn-surface);
  border-radius: 4px 24px 24px 4px;
  margin: 9px 0;
  padding: 12px 18px;
  border-left: 3px solid var(--wtn-line);
}
.wtn-faq details[open] { border-left-color: var(--wtn-accent2); }
.wtn-faq summary {
  cursor: pointer;
  font-family: "Moderustic", sans-serif;
  font-size: 16px;
  color: var(--wtn-text);
}
.wtn-faq summary::marker { color: var(--wtn-accent); }
.wtn-faq p { margin: 9px 0 2px; font-size: 14.5px; color: #cadad9; }

/* ——— отзыв ——— */
.wtn-quote {
  background: var(--wtn-surface);
  border-radius: 30px 4px 30px 4px;
  padding: 20px 24px;
  margin: 20px 0;
  border-right: 3px solid var(--wtn-accent2);
}
.wtn-quote p { margin: 0 0 10px; font-size: 15px; }
.wtn-quote-who { font-size: 13px; color: var(--wtn-muted); }

/* ——— сводка источников ——— */
.wtn-meta {
  background: rgba(18, 32, 35, .7);
  border-radius: 4px 26px 26px 4px;
  padding: 18px 22px;
  margin: 20px 0;
  font-size: 14px;
  border-top: 1px solid var(--wtn-line);
}

/* ——— подвал ——— */
.wtn-foot {
  margin-top: 40px;
  border-top: 1px solid var(--wtn-line);
  background: rgba(18, 32, 35, .55);
  padding: 26px 0 40px;
  font-size: 13.5px;
  color: var(--wtn-muted);
}
.wtn-foot p { margin: 7px 0; }
.wtn-foot-18 {
  color: var(--wtn-accent2);
  border-left: 3px solid var(--wtn-accent2);
  padding-left: 12px;
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .wtn-shell, .wtn-top-in { padding-left: 16px; padding-right: 16px; }
  .wtn-hero h1 { font-size: 27px; }
  .wtn-lead { font-size: 15.5px; }
  .wtn-kpi { grid-template-columns: 1fr 1fr; }
  .wtn-steps { grid-template-columns: 1fr; }
  .wtn-sec h2 { font-size: 21px; }
  .wtn-sec h3 { font-size: 17px; }
  .wtn-cta { display: block; text-align: center; padding: 14px 18px; }
  .wtn-tw { margin-left: 0; margin-right: 0; }
}