/* ============================================================
   ГелиоКаскад — стили v3. Инженерный blueprint: тёмный графит,
   чертёжная сетка (приглушённая), янтарь + циан. Разделение —
   фоном и воздухом, а не линиями в цвет сетки.
   ============================================================ */

:root {
  --bg: #0e1520;
  --bg-panel: #141e2d;
  --bg-panel2: #182434;
  --bg-zebra: rgba(255, 255, 255, 0.025);
  --grid: #131c29;
  --line: #24344a;
  --text: #dfe6ee;
  --muted: #8f9bb0;
  --amber: #e8a33d;
  --amber-dim: #b57d2a;
  --cyan: #5ec8d8;
  --cyan-dim: #2c6f8f;
  --red: #d9664a;
  --green: #6fbf73;
  --sel: #eef3f8;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --sidebar: 248px;
  --maxw: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  line-height: 1.6;
}

.mono { font-family: var(--mono); }
.amber { color: var(--amber); }
.muted { color: var(--muted); }

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

h1, h2, h3, h4 { font-weight: 650; letter-spacing: 0.01em; }

/* ============================================================
   СНОСКИ И ТЕРМИНЫ (интерактивные)
   ============================================================ */
.ref {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.35em;
  height: 1.35em;
  padding: 0 0.3em;
  margin: 0 0.15em;
  font-family: var(--mono);
  font-size: 0.68em;
  font-weight: 700;
  color: var(--cyan);
  background: rgba(94, 200, 216, 0.1);
  border-radius: 3px;
  cursor: pointer;
  vertical-align: super;
  transition: background 0.15s, color 0.15s;
  user-select: none;
}
.ref:hover, .ref:focus-visible {
  background: var(--amber);
  color: #14100a;
  outline: none;
}
.term {
  border-bottom: 1px dashed var(--cyan-dim);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.term:hover, .term:focus-visible {
  border-bottom-color: var(--amber);
  background: rgba(232, 163, 61, 0.08);
  outline: none;
}

#popover {
  position: absolute;
  z-index: 300;
  background: #101a28;
  border: 1px solid var(--cyan-dim);
  border-radius: 5px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.55);
  padding: 16px 18px;
  font-size: 0.86rem;
  line-height: 1.55;
}
#popover h4 { margin: 2px 26px 4px 0; font-size: 0.95rem; color: var(--text); }
.pop-refno { font-size: 0.66rem; color: var(--cyan); letter-spacing: 0.1em; text-transform: uppercase; }
.pop-pub { color: var(--muted); font-size: 0.76rem; margin-bottom: 10px; }
#popover blockquote {
  margin: 0 0 10px;
  padding: 10px 12px;
  background: rgba(94, 200, 216, 0.05);
  border-left: 2px solid var(--cyan-dim);
  color: var(--text);
  font-size: 0.84rem;
}
#popover blockquote mark {
  background: rgba(232, 163, 61, 0.22);
  color: var(--amber);
  padding: 0 2px;
  border-radius: 2px;
}
.pop-why { color: var(--muted); font-size: 0.82rem; margin: 0 0 10px; }
.pop-why b { color: var(--cyan); }
.pop-term { margin: 6px 0 0; color: var(--text); }
.pop-link { font-family: var(--mono); font-size: 0.78rem; }
.pop-close {
  position: absolute;
  top: 6px; right: 8px;
  background: none; border: none;
  color: var(--muted); font-size: 1.1rem;
  cursor: pointer; padding: 2px 6px;
}
.pop-close:hover { color: var(--amber); }
.pop-sheet {
  left: 0 !important; right: 0; bottom: 0;
  width: 100% !important;
  border-radius: 8px 8px 0 0;
  max-height: 70vh;
  overflow-y: auto;
  position: fixed;
}

/* список источников */
.reflist-wrap { padding-top: 30px; }
.reflist { list-style: none; margin: 0; padding: 0; column-gap: 40px; columns: 2; }
.reflist li {
  display: flex; gap: 12px; align-items: baseline;
  padding: 7px 0;
  font-size: 0.82rem;
  break-inside: avoid;
}
.reflist-no {
  color: var(--cyan);
  background: rgba(94, 200, 216, 0.1);
  border-radius: 3px;
  min-width: 1.7em;
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 1px 4px;
  flex-shrink: 0;
}
.reflist-body { color: var(--muted); }
.reflist-body b { color: var(--text); font-weight: 600; }
.reflist-body a { font-size: 0.76rem; }

/* ============================================================
   КАРКАС: боковая навигация + поток
   ============================================================ */
.layout { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }

.sidenav {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #0c121d;
  padding: 22px 0 0;
  z-index: 100;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 0 20px 18px;
}
.brand:hover { text-decoration: none; }
.brand-text { font-weight: 700; color: var(--text); display: flex; flex-direction: column; line-height: 1.15; font-size: 0.98rem; }
.brand-text small { font-family: var(--mono); font-size: 0.6rem; color: var(--muted); font-weight: 400; letter-spacing: 0.1em; margin-top: 3px; }

.steps { display: flex; flex-direction: column; overflow-y: auto; flex: 1; padding: 10px 0; }
.steps a {
  display: flex; align-items: baseline; gap: 10px;
  padding: 8px 20px;
  border-left: 3px solid transparent;
  color: var(--muted);
  font-size: 0.84rem;
}
.steps a b { font-family: var(--mono); font-size: 0.72rem; color: var(--cyan-dim); font-weight: 700; min-width: 20px; }
.steps a:hover { color: var(--text); text-decoration: none; background: var(--bg-panel2); }
.steps a.active {
  color: var(--text);
  border-left-color: var(--amber);
  background: rgba(232, 163, 61, 0.07);
}
.steps a.active b { color: var(--amber); }

.sidenav-foot {
  padding: 12px 20px;
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  line-height: 1.5;
}
.scroll-progress { height: 2px; background: var(--amber); width: 0%; transition: width 0.1s linear; }

.main { min-width: 0; }

/* ============================================================
   HERO
   ============================================================ */
.hero { max-width: var(--maxw); margin: 0 auto; padding: 84px 32px 60px; }
.kicker {
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--cyan);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 18px;
}
.hero h1 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.15; margin: 0 0 22px; }
.lead { color: var(--muted); font-size: 1.05rem; }
.hero-cta { display: flex; gap: 12px; margin: 30px 0 40px; flex-wrap: wrap; }
.btn {
  padding: 11px 22px;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--line);
  color: var(--text);
}
.btn:hover { text-decoration: none; }
.btn-amber { background: var(--amber); border-color: var(--amber); color: #14100a; }
.btn-amber:hover { background: #f2b355; }
.btn-ghost:hover { border-color: var(--amber-dim); color: var(--amber); }
.hero-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.metric { padding: 18px 22px; background: var(--bg-panel); border-radius: 4px; }
.metric-value { font-family: var(--mono); font-size: 1.9rem; font-weight: 700; color: var(--amber); }
.metric-value small { font-size: 0.95rem; color: var(--muted); margin-left: 6px; }
.metric-label { color: var(--muted); font-size: 0.84rem; margin-top: 4px; }
.hero-note { font-size: 0.82rem; color: var(--muted); padding-top: 12px; margin-top: 28px; }

/* ============================================================
   ГЛАВЫ: связный поток, разделение воздухом
   ============================================================ */
.chapter { max-width: var(--maxw); margin: 0 auto; padding: 60px 32px 44px; }
.ch-head { display: flex; gap: 22px; align-items: flex-start; margin-bottom: 26px; }
.ch-no {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--amber);
  line-height: 1.05;
  border: 1px solid var(--amber-dim);
  padding: 5px 11px;
  border-radius: 3px;
  background: rgba(232, 163, 61, 0.06);
}
.ch-head h2 { margin: 4px 0 6px; font-size: 1.55rem; }
.ch-sub { margin: 0; color: var(--muted); }

.h-sub { font-size: 1.14rem; margin: 30px 0 8px; color: var(--text); }
.h-sub::before { content: "— "; color: var(--amber); }

/* маркеры цикла */
.q {
  border-left: 3px solid var(--cyan);
  background: rgba(94, 200, 216, 0.05);
  padding: 12px 18px;
  margin: 0 0 22px;
  font-size: 1rem;
}
.q-tag { display: block; color: var(--cyan); font-size: 0.72rem; letter-spacing: 0.08em; margin-bottom: 4px; }
.out {
  border-left: 3px solid var(--green);
  background: rgba(111, 191, 115, 0.06);
  padding: 13px 18px;
  margin: 26px 0 0;
  font-size: 0.95rem;
}
.out b { color: var(--green); }
.corr {
  border-left: 3px solid var(--amber);
  background: rgba(232, 163, 61, 0.06);
  padding: 13px 18px;
  margin: 10px 0 0;
  font-size: 0.95rem;
}
.corr b { color: var(--amber); }

.factlist { padding-left: 20px; margin: 10px 0; }
.factlist li { margin-bottom: 10px; font-size: 0.94rem; }

.panel {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 24px 26px;
  margin: 24px 0;
}
.panel h3 { margin-top: 0; font-size: 1.1rem; }
.cols-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.note { font-size: 0.86rem; color: var(--muted); padding-top: 12px; margin-bottom: 0; }

/* ---------- бар-диаграммы ---------- */
.barlist { display: flex; flex-direction: column; gap: 13px; margin: 18px 0; }
.barrow { display: grid; grid-template-columns: 215px 1fr 120px; gap: 12px; align-items: center; }
.barname { font-size: 0.9rem; }
.bartrack { height: 14px; background: var(--bg-panel2); border-radius: 2px; overflow: hidden; }
.barfill { height: 100%; width: var(--w); transition: width 0.8s ease; }
.bar-hot { background: var(--red); }
.bar-warm { background: var(--amber); }
.bar-mid { background: var(--cyan-dim); }
.bar-cold { background: var(--cyan); }
.bar-free { background: var(--green); }
.barval { font-size: 0.85rem; text-align: right; }

/* ---------- фильтр газ/электричество ---------- */
.filter-rule { margin: 12px 0 18px; }
.filter-q { color: var(--muted); font-size: 0.9rem; }
.filter-big { font-size: 1.4rem; font-weight: 700; margin: 4px 0 14px; }
.filter-answers { display: grid; grid-template-columns: 1fr; gap: 12px; }
.fa { background: var(--bg-panel); border-radius: 4px; padding: 12px 14px; font-size: 0.88rem; }
.fa b { display: block; margin-bottom: 4px; font-size: 1rem; }
.fa span { color: var(--muted); }
.fa-no { border-left: 3px solid var(--red); }
.fa-no b { color: var(--red); }
.fa-yes { border-left: 3px solid var(--green); }
.fa-yes b { color: var(--green); }

/* ---------- статистика ---------- */
.statgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 14px 0; }
.stat { background: var(--bg-panel); border-radius: 4px; padding: 14px 16px; }
.stat-val { font-size: 1.5rem; font-weight: 700; color: var(--amber); font-family: var(--mono); }
.stat-lbl { font-size: 0.8rem; color: var(--muted); margin-top: 4px; }

/* ---------- таблицы: без линий, зебра + акцент шапки ---------- */
.tbl { width: 100%; border-collapse: collapse; font-size: 0.89rem; margin: 14px 0; }
.tbl th, .tbl td { padding: 10px 12px; text-align: left; vertical-align: top; border: none; }
.tbl th {
  font-weight: 600; font-size: 0.78rem; text-transform: uppercase;
  letter-spacing: 0.07em; color: var(--muted);
  border-bottom: 2px solid var(--amber-dim);
}
.tbl tbody tr:nth-child(odd) td { background: var(--bg-zebra); }
.tbl tbody tr:hover td { background: rgba(94, 200, 216, 0.06); }
.tbl td.num, .tbl th.num { text-align: right; white-space: nowrap; }
.tbl-verdicts td:nth-child(2) { white-space: nowrap; }
.v { font-weight: 700; font-size: 0.85rem; }
.v-yes { color: var(--green); }
.v-no { color: var(--red); }
.v-mid { color: var(--amber); }

.formula {
  background: var(--bg-panel);
  border-radius: 4px;
  padding: 16px 18px;
  font-size: 0.9rem;
  line-height: 2;
  color: var(--cyan);
  margin: 12px 0;
  overflow-x: auto;
}

/* ============================================================
   СХЕМА: крупно, спека слева от карточки (не прыгает)
   ============================================================ */
.scheme-wrap { margin: 24px 0 30px; }
.scheme-panel {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 16px;
}
#scheme { width: 100%; height: auto; display: block; }
#scheme .zone { fill: none; stroke: var(--line); stroke-width: 1.2; stroke-dasharray: 7 6; }

.scheme-under {
  display: grid;
  grid-template-columns: 0.9fr 1.6fr;
  gap: 20px;
  margin-top: 18px;
  align-items: start;
}

#scheme .thin { stroke: var(--line); stroke-width: 1.2; fill: none; }
#scheme .dash { stroke-dasharray: 5 5; }
.svg-label { fill: var(--text); font-size: 12.5px; font-family: var(--sans); }
.svg-dim { fill: var(--muted); font-size: 10.5px; font-family: var(--mono); }

.node { cursor: pointer; outline: none; }
.node-body {
  fill: var(--bg-panel2);
  stroke: var(--cyan-dim);
  stroke-width: 1.4;
  transition: stroke 0.2s, fill 0.2s;
}
.node:hover .node-body { stroke: var(--amber); fill: #1b2836; }
.node.selected .node-body, .node:focus-visible .node-body {
  stroke: var(--sel);
  fill: #232f40;
}
.collector-body { fill: #14273a; }
.absorber line { stroke: var(--cyan-dim); stroke-width: 1.2; }
.controller-body { fill: #14202e; }
.ctrl-screen { fill: #0a1119; stroke: var(--line); stroke-width: 1; }
.ctrl-screen-text { fill: var(--green); font-size: 10px; }
.ctrl-led { fill: var(--green); }
.ctrl-led.off { fill: #333f50; }
.sensor { fill: var(--amber); stroke: #14100a; stroke-width: 1; }
.pump-arrow { fill: var(--cyan); transition: fill 0.3s; }
.valve path { fill: var(--bg-panel2); stroke: var(--cyan-dim); stroke-width: 1.2; }
.valve.active path { stroke: var(--amber); fill: rgba(232, 163, 61, 0.25); }
.ten { fill: none; stroke: var(--red); stroke-width: 1.6; opacity: 0.9; }
.tank-temp { fill: var(--text); font-size: 13px; font-weight: 700; }
.water-line { stroke: var(--cyan-dim); stroke-width: 1; }

.pipe { stroke-width: 2.6; fill: none; stroke-linecap: round; }
.pipe-cold { stroke: var(--cyan-dim); }
.pipe-hot { stroke: var(--amber-dim); }
.pipe-coldwater { stroke: var(--cyan); }
.pipe-outhot { stroke: var(--amber); }
.pipe.branch { stroke-width: 2; }
.flow .pipe { stroke-dasharray: 7 6; animation: flowdash 1.1s linear infinite; }
.pipe.branch { opacity: 0.25; transition: opacity 0.3s; }
.pipe.branch.active { opacity: 1; }
@keyframes flowdash { to { stroke-dashoffset: -13; } }

.wire { stroke: var(--green); stroke-width: 1; stroke-dasharray: 3 4; fill: none; opacity: 0.55; }

.sun-core { fill: rgba(232, 163, 61, 0.18); stroke: var(--amber); stroke-width: 1.6; }
.sun-rays line { stroke: var(--amber); stroke-width: 1.6; }
.sun { transition: opacity 0.4s; }
.sun.dim { opacity: 0.25; }

.callout { cursor: pointer; }
.callout circle {
  fill: var(--bg);
  stroke: var(--cyan-dim);
  stroke-width: 1.2;
  transition: stroke 0.2s, fill 0.2s;
}
.callout text {
  fill: var(--text);
  font-family: var(--mono);
  font-size: 11px;
  text-anchor: middle;
  pointer-events: none;
}
.callout:hover circle { stroke: var(--amber); fill: rgba(232, 163, 61, 0.15); }
.callout.selected circle { stroke: var(--sel); fill: rgba(238, 243, 248, 0.14); }

.nodecard {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 18px 20px;
  min-height: 250px;
}
.nodecard-empty { color: var(--muted); font-size: 0.92rem; }
.nodecard-empty .mono { color: var(--cyan); }
.nodecard-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.nodecard-head h3 { margin: 0; font-size: 1.05rem; }
.nodecard-pos {
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  border-radius: 3px;
  padding: 2px 9px;
  font-weight: 700;
}
.nc-purpose { font-size: 0.9rem; color: var(--text); margin: 6px 0 12px; }
.nc-row {
  display: flex; justify-content: space-between; gap: 14px;
  padding: 8px 0; font-size: 0.88rem;
}
.nc-row span { color: var(--muted); }
.nc-row b { text-align: right; }
.nc-alts { margin-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.nc-alt { background: var(--bg-panel2); border-radius: 4px; padding: 9px 12px; font-size: 0.84rem; }
.nc-alt b { display: block; margin-bottom: 3px; }
.nc-alt .plus { color: var(--green); }
.nc-alt .minus { color: var(--red); }
.nc-alt .pm { color: var(--muted); display: block; }

.spec { background: var(--bg-panel); border-radius: 6px; padding: 16px 18px; }
.spec h4 { margin: 0 0 10px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
.spec-list { list-style: none; margin: 0; padding: 0; }
.spec-list li {
  display: flex; align-items: baseline; gap: 10px;
  padding: 7px 8px; font-size: 0.88rem; cursor: pointer;
  border-radius: 3px;
}
.spec-list li:hover { background: var(--bg-panel2); }
.spec-list li.selected { background: rgba(238, 243, 248, 0.07); }
.spec-list li.selected .spec-no { color: var(--sel); }
.spec-no { color: var(--cyan-dim); font-size: 0.78rem; min-width: 30px; }

/* ============================================================
   СИМУЛЯЦИЯ И КАЛЬКУЛЯТОР
   ============================================================ */
.sim, .calc {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 24px 26px;
  margin: 26px 0 30px;
}
.sim-head h3, .calc h3 { margin: 0 0 6px; }
.sim-head h3::before { content: "▮ "; color: var(--amber); }
.sim-controls {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 26px;
  margin: 20px 0;
}
.ctrl label { display: block; font-size: 0.88rem; margin-bottom: 8px; }
.ctrl label b { color: var(--amber); }
input[type="range"] {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 4px;
  background: var(--line);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 18px; height: 18px;
  background: var(--amber);
  border: 2px solid #14100a;
  border-radius: 3px;
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  background: var(--amber);
  border: 2px solid #14100a;
  border-radius: 3px;
  cursor: pointer;
}
.range-scale { display: flex; justify-content: space-between; font-size: 0.68rem; color: var(--muted); margin-top: 6px; }
.seg { display: flex; gap: 0; }
.seg button {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 8px 13px;
  cursor: pointer;
  flex: 1;
}
.seg button:first-child { border-radius: 3px 0 0 3px; }
.seg button:last-child { border-radius: 0 3px 3px 0; }
.seg button + button { border-left: none; }
.seg button.on { background: rgba(232, 163, 61, 0.12); color: var(--amber); border-color: var(--amber-dim); }
.seg button:hover:not(.on) { color: var(--text); }

.sim-readout { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; }
.ro {
  background: var(--bg);
  border-radius: 4px;
  padding: 10px 12px;
  display: flex; flex-direction: column;
}
.ro-lbl { font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.ro-val { font-size: 1.25rem; font-weight: 700; color: var(--cyan); margin-top: 2px; transition: color 0.3s; }
.ro-unit { font-size: 0.68rem; color: var(--muted); }
.ro-main { background: rgba(232, 163, 61, 0.08); }
.ro-main .ro-val { color: var(--amber); font-size: 1.5rem; }

.calc-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 30px; margin-top: 6px; }
.calc-controls { display: flex; flex-direction: column; gap: 20px; }
.calc-numbers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 16px; }
.cn { background: var(--bg); border-radius: 4px; padding: 10px 12px; }
.cn-lbl { display: block; font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.cn-val { font-size: 1.2rem; font-weight: 700; color: var(--cyan); }
.cn-main { background: rgba(232, 163, 61, 0.08); }
.cn-main .cn-val { color: var(--amber); font-size: 1.45rem; }
#calcChart, #insChart { width: 100%; background: var(--bg); border-radius: 4px; }

.chart-legend { display: flex; gap: 10px; margin: 14px 0; flex-wrap: wrap; }
.lg {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg); border: 1px solid var(--line); color: var(--muted);
  font-size: 0.82rem; font-family: var(--mono);
  padding: 6px 12px; border-radius: 3px; cursor: pointer;
}
.lg i { width: 12px; height: 12px; border-radius: 2px; display: inline-block; opacity: 0.35; }
.lg.on { color: var(--text); }
.lg.on i { opacity: 1; }

/* ---------- сегменты ---------- */
.segments {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 18px 0 30px;
}
.segcard {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 18px;
  display: flex; flex-direction: column; gap: 8px;
  transition: background 0.2s;
}
.segcard:hover { background: var(--bg-panel2); }
.segcard h4 { margin: 0; font-size: 1rem; }
.segcard .seg-demand { font-family: var(--mono); font-size: 0.78rem; color: var(--cyan); }
.segcard .seg-sys { font-size: 0.82rem; color: var(--muted); }
.segcard table { width: 100%; border-collapse: collapse; font-size: 0.82rem; margin-top: 4px; }
.segcard td { padding: 4px 0; }
.segcard td:last-child { text-align: right; font-family: var(--mono); }
.segcard .seg-pb { font-size: 1.35rem; font-weight: 700; color: var(--amber); font-family: var(--mono); }
.segcard .seg-note { font-size: 0.76rem; color: var(--muted); padding-top: 8px; }

/* ---------- воронка ---------- */
.funnel { display: flex; flex-direction: column; gap: 8px; margin: 18px 0; }
.fstage {
  display: grid;
  grid-template-columns: 270px 1fr 90px;
  gap: 14px;
  align-items: center;
  cursor: pointer;
  padding: 7px 8px;
  border-radius: 4px;
}
.fstage:hover, .fstage.selected { background: var(--bg-panel2); }
.fstage-name { font-size: 0.88rem; }
.fstage-track { height: 26px; background: var(--bg-panel); border-radius: 3px; overflow: hidden; }
.fstage-bar {
  height: 100%;
  width: var(--w, 100%);
  background: repeating-linear-gradient(-45deg, var(--cyan-dim) 0 8px, #265c74 8px 16px);
  transition: width 1s ease;
}
.fstage:last-child .fstage-bar { background: repeating-linear-gradient(-45deg, var(--amber-dim) 0 8px, #a06f24 8px 16px); }
.fstage-val { font-family: var(--mono); font-size: 0.95rem; font-weight: 700; color: var(--text); text-align: right; }
.funnel-detail {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 14px 18px;
  font-size: 0.9rem;
  color: var(--muted);
  min-height: 60px;
  margin-bottom: 18px;
}
.funnel-detail .mono { color: var(--cyan); }
.funnel-detail b { color: var(--text); }

/* ---------- шаги работы системы ---------- */
.flowsteps { margin: 26px 0 6px; }
.flowsteps h3 { margin: 0 0 14px; font-size: 1.1rem; }
.fsteps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.fstep {
  background: var(--bg-panel);
  border-radius: 6px;
  padding: 14px 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.fstep-no {
  flex-shrink: 0;
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(232, 163, 61, 0.12);
  color: var(--amber);
  border-radius: 3px;
  font-weight: 700;
  font-size: 0.85rem;
}
.fstep p { margin: 0; font-size: 0.84rem; color: var(--muted); line-height: 1.5; }

/* ---------- роадмап ---------- */
.roadmap { display: flex; flex-direction: column; margin-top: 10px; }
.rm-item {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 20px;
  padding: 20px 0;
}
.rm-item + .rm-item { margin-top: 4px; }
.rm-no {
  width: 44px; height: 44px;
  border: 1px solid var(--cyan-dim);
  color: var(--cyan);
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; font-weight: 700;
}
.rm-go .rm-no { border-color: var(--amber-dim); color: var(--amber); }
.rm-body h4 { margin: 0 0 6px; }
.rm-who {
  font-family: var(--mono); font-size: 0.7rem; color: var(--muted);
  border: 1px solid var(--line); border-radius: 3px; padding: 2px 8px; margin-left: 8px;
  vertical-align: middle;
}
.rm-body p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* ---------- футер ---------- */
.footer {
  max-width: var(--maxw);
  margin: 20px auto 0;
  padding: 20px 32px 50px;
  font-size: 0.84rem;
  color: var(--muted);
}

/* ============================================================
   АДАПТИВНОСТЬ
   ============================================================ */
@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
  .sidenav {
    position: sticky; top: 0; height: auto;
    flex-direction: row; align-items: center; gap: 14px;
    padding: 0 16px;
    overflow-x: auto;
  }
  .brand { border: none; padding: 10px 0; flex-shrink: 0; }
  .brand-text small { display: none; }
  .steps { flex-direction: row; padding: 0; overflow: visible; }
  .steps a { border-left: none; border-bottom: 2px solid transparent; padding: 10px 10px; white-space: nowrap; }
  .steps a span { display: none; }
  .steps a b { min-width: 0; font-size: 0.78rem; }
  .steps a.active { border-bottom-color: var(--amber); }
  .sidenav-foot { display: none; }
  .scroll-progress { position: absolute; bottom: -1px; left: 0; }
  .hero, .chapter, .footer { padding-left: 22px; padding-right: 22px; }
  .cols-2 { grid-template-columns: 1fr; }
  .scheme-under { grid-template-columns: 1fr; }
  .fsteps-grid { grid-template-columns: 1fr; }
  .sim-controls { grid-template-columns: 1fr; }
  .sim-readout { grid-template-columns: repeat(3, 1fr); }
  .calc-grid { grid-template-columns: 1fr; }
  .calc-numbers { grid-template-columns: repeat(2, 1fr); }
  .statgrid { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics { grid-template-columns: 1fr; }
  .reflist { columns: 1; }
  .barrow { grid-template-columns: 160px 1fr 105px; }
  .fstage { grid-template-columns: 200px 1fr 80px; }
}
@media (max-width: 640px) {
  .sim-readout { grid-template-columns: repeat(2, 1fr); }
  .statgrid { grid-template-columns: 1fr; }
  .barrow { grid-template-columns: 1fr; gap: 4px; }
  .barval { text-align: left; }
  .fstage { grid-template-columns: 1fr; gap: 4px; }
  .fstage-val { text-align: left; }
}