:root {
  --bg: #050914;
  --panel: rgba(12, 22, 42, .72);
  --panel-strong: rgba(14, 28, 55, .88);
  --line: rgba(113, 194, 255, .28);
  --text: #edf6ff;
  --muted: #9fb0c8;
  --cyan: #47d8ff;
  --teal: #3ee9b7;
  --amber: #ffd166;
  --red: #ff6b7a;
  --blue: #6aa6ff;
  --glass: blur(16px);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 15% 10%, rgba(71,216,255,.18), transparent 32%),
              radial-gradient(circle at 83% 18%, rgba(62,233,183,.12), transparent 32%),
              radial-gradient(circle at 50% 88%, rgba(255,209,102,.08), transparent 38%),
              linear-gradient(135deg, #050914 0%, #0b1224 46%, #060b17 100%);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
  overflow-x: hidden;
}
.ambient { position: fixed; width: 52vw; height: 52vw; border-radius: 50%; filter: blur(70px); opacity: .25; pointer-events: none; animation: floatGlow 18s ease-in-out infinite alternate; }
.ambient-a { left: -18vw; top: -20vh; background: var(--cyan); }
.ambient-b { right: -18vw; bottom: -30vh; background: var(--teal); animation-delay: -6s; }
.scan-grid { position: fixed; inset: 0; pointer-events: none; opacity: .22; background-image: linear-gradient(rgba(71,216,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(71,216,255,.06) 1px, transparent 1px); background-size: 42px 42px; mask-image: radial-gradient(circle at center, black, transparent 78%); }
@keyframes floatGlow { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(5vw,4vh,0) scale(1.15); } }
.glass { background: var(--panel); border: 1px solid var(--line); box-shadow: 0 24px 80px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.04); backdrop-filter: var(--glass); }
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 22px; border-left: 0; border-right: 0; border-top: 0; }
.brand { display: grid; gap: 4px; }
.badge, .eyebrow { color: var(--cyan); letter-spacing: .14em; text-transform: uppercase; font-size: 12px; }
.brand strong { font-size: 18px; }
.screen-nav { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.screen-btn, .primary-action, .secondary-action, .danger-action, .scenarios button { border: 1px solid rgba(137,207,255,.3); color: var(--text); background: rgba(10,22,42,.68); border-radius: 999px; padding: 10px 14px; cursor: pointer; transition: transform .2s ease, background .2s ease, box-shadow .2s ease; }
.screen-btn:hover, .primary-action:hover, .secondary-action:hover, .danger-action:hover, .scenarios button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(71,216,255,.16); }
.screen-btn.active { background: linear-gradient(135deg, rgba(71,216,255,.32), rgba(62,233,183,.18)); border-color: rgba(71,216,255,.75); }
.control-mode-switch label { display: grid; gap: 8px; margin: 10px 0; color: var(--muted); }
.control-mode-switch h3 { margin: 0 0 12px; }
.control-mode-switch,
.physics-card.process-links,
.physics-card.event-log,
.physics-card.risk-reasons {
  width: 100%;
}
.screens { width: min(1240px, 94vw); margin: 0 auto; padding: 28px 0 60px; }
.screen { display: none; animation: screenIn .45s ease both; }
.screen.active { display: block; }
@keyframes screenIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.hero-screen { min-height: calc(100vh - 92px); display: none; grid-template-columns: 1.08fr .92fr; gap: 24px; align-items: center; }
.hero-screen.active { display: grid; }
.hero-copy h1 { font-size: clamp(42px, 6vw, 82px); line-height: .96; letter-spacing: -.04em; margin: 12px 0 18px; }
.hero-sub { color: var(--muted); font-size: clamp(18px, 2vw, 24px); max-width: 760px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.primary-action { background: linear-gradient(135deg, rgba(71,216,255,.48), rgba(62,233,183,.24)); }
.danger-action { background: linear-gradient(135deg, rgba(255,107,122,.42), rgba(255,209,102,.2)); }
.value-line { display: grid; gap: 8px; padding: 16px; border-radius: 20px; color: var(--muted); }
.hero-plant { border-radius: 28px; padding: 20px; }
.mini-mnemo { position: relative; height: 330px; border-radius: 22px; overflow: hidden; background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.01)); }
.mini-column, .column-vessel { position: absolute; left: 50%; transform: translateX(-50%); width: 145px; height: 250px; bottom: 28px; border: 2px solid rgba(167,224,255,.56); border-radius: 40px 40px 28px 28px; overflow: hidden; box-shadow: inset 0 0 34px rgba(71,216,255,.12), 0 0 60px rgba(71,216,255,.12); }
.mini-liquid, .column-liquid { position: absolute; left: 0; right: 0; bottom: 0; height: 68%; background: linear-gradient(180deg, rgba(62,233,183,.55), rgba(71,216,255,.44)); transition: height .6s ease, background .4s ease; }
.mini-level, .column-label { position: absolute; inset: auto 0 12px; text-align: center; font-weight: 700; text-shadow: 0 2px 10px #000; }
.mini-flow, .pipe { position: absolute; overflow: hidden; }
.mini-flow::after, .pipe::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 10px, rgba(255,255,255,.76) 10px 18px, transparent 18px 30px);
  opacity: .75;
}
.mini-flow::after { animation: flowMoveHorizontal 1.2s linear infinite; }
.pipe::after { animation: none; }
.pipe.flow-active::after { animation: flowMoveHorizontal 1.2s linear infinite; }
.pipe.pipe-cooling.flow-active::after {
  animation: flowMoveVertical 1.2s linear infinite;
  background: repeating-linear-gradient(0deg, transparent 0 10px, rgba(255,255,255,.76) 10px 18px, transparent 18px 30px);
}
.pipe.flow-active { opacity: 1; }
@keyframes flowMoveHorizontal { to { transform: translateX(48px); } }
@keyframes flowMoveVertical { to { transform: translateY(48px); } }
.water-flow { top: 72px; left: 22px; right: 58%; height: 9px; background: rgba(71,216,255,.38); }
.gas-flow { top: 128px; left: 16px; right: 62%; height: 7px; background: rgba(235,247,255,.35); }
.slurry-flow { bottom: 88px; left: 58%; right: 18px; height: 10px; background: rgba(255,209,102,.38); }
.status-chip { position: absolute; right: 20px; top: 20px; padding: 8px 12px; border-radius: 999px; background: rgba(62,233,183,.18); border: 1px solid rgba(62,233,183,.44); }
.hero-kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 16px; }
.hero-kpis article { padding: 14px; border: 1px solid rgba(255,255,255,.08); border-radius: 16px; background: rgba(255,255,255,.035); }
.hero-kpis strong { display: block; font-size: 27px; color: var(--cyan); }
.hero-kpis span { color: var(--muted); font-size: 13px; }
.section-head { margin: 0 0 22px; max-width: 920px; }
.section-head h2 { font-size: clamp(32px, 4vw, 54px); margin: 8px 0; }
.section-head p { color: var(--muted); }
.mnemo-layout { display: grid; grid-template-columns: 1fr 340px; gap: 20px; }
.process-board { min-height: 560px; border-radius: 28px; position: relative; overflow: hidden; }
.pipe { border-radius: 999px; background: rgba(71,216,255,.18); border: 1px solid rgba(71,216,255,.28); }
.pipe span { position: absolute; transform: translateY(-28px); color: var(--muted); font-size: 12px; }
.pipe-water { top: 116px; left: 44px; right: 58%; height: 14px; }
.pipe-gas { top: 205px; left: 44px; right: 60%; height: 10px; background: rgba(255,255,255,.14); }
.pipe-cooling { right: 88px; top: 120px; width: 12px; height: 270px; background: rgba(93,157,255,.23); }
.pipe-slurry { bottom: 148px; left: 58%; right: 44px; height: 14px; background: rgba(255,209,102,.22); }
.column-vessel { top: 120px; bottom: auto; width: 190px; height: 340px; }
.bubble { position: absolute; bottom: 20px; left: 42%; width: 14px; height: 14px; border-radius: 50%; background: rgba(255,255,255,.55); animation: bubbleUp 3s ease-in infinite; }
.bubble-b { left: 58%; animation-delay: .8s; }
.bubble-c { left: 34%; animation-delay: 1.5s; }
@keyframes bubbleUp { from { transform: translateY(0) scale(.8); opacity: 0; } 30% { opacity: .9; } to { transform: translateY(-230px) scale(1.15); opacity: 0; } }
.valve { position: absolute; z-index: 3; border: 1px solid rgba(71,216,255,.42); color: var(--text); background: rgba(7,16,32,.88); border-radius: 12px; padding: 8px 10px; cursor: pointer; }
.valve.closed { opacity: .45; border-color: rgba(255,107,122,.55); box-shadow: 0 0 20px rgba(255,107,122,.22); }
.valve-with-icon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  line-height: 1.1;
  min-height: 58px;
}
.valve-icon {
  font-size: 14px;
  line-height: 1;
}
.valve-water { left: 80px; top: 82px; }
.valve-gas { left: 82px; top: 168px; }
.valve-slurry { right: 74px; bottom: 112px; }
.valve-cooling { right: 42px; top: 84px; }
.actuator-visual {
  position: absolute;
  z-index: 4;
  width: 120px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
}
.actuator-water { left: 18px; top: 196px; }
.actuator-gas { right: 15px; top: 196px; }
.motor-body {
  margin: 0 auto 6px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(126, 210, 255, 0.45);
  background: rgba(6, 18, 35, 0.72);
  display: grid;
  place-items: center;
  position: relative;
  transition: border-color .4s ease, box-shadow .4s ease;
}
.motor-body span { position: relative; z-index: 2; letter-spacing: .02em; }
.motor-rotor {
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,.45);
  animation: motorStop 1.6s linear infinite paused;
}
.actuator-visual.active .motor-body {
  border-color: rgba(62,233,183,.92);
  box-shadow: 0 0 24px rgba(62,233,183,.22);
}
.actuator-visual.active .motor-rotor {
  animation: motorRun 1.1s linear infinite;
}
@keyframes motorRun { to { transform: rotate(360deg); } }
@keyframes motorStop { to { transform: rotate(0deg); } }
.sensor { position: absolute; padding: 10px 12px; border-radius: 14px; background: rgba(0,0,0,.28); border: 1px solid rgba(255,255,255,.08); }
.sensor-level { left: 50px; bottom: 54px; }
.sensor-temp { right: 44px; top: 52px; }
.sensor-pressure { right: 48px; bottom: 56px; }
.sensor-risk { left: 48px; top: 250px; }
.state-panel { border-radius: 24px; padding: 20px; }
.state-row { display: flex; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,.08); padding: 12px 0; }
.risk-meter { height: 14px; border-radius: 999px; background: rgba(255,255,255,.08); overflow: hidden; margin: 18px 0; }
.risk-meter div { height: 100%; width: 18%; background: var(--teal); transition: width .5s ease, background .5s ease; }
.note { color: var(--muted); font-size: 14px; }
.control-grid, .proof-grid, .advisor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.control-card, .proof-card, .advisor-card, .limitations, .roadmap, .chain { border-radius: 22px; padding: 20px; }
.control-card label { display: grid; gap: 8px; margin: 14px 0; color: var(--muted); }
input[type="range"] { width: 100%; accent-color: var(--cyan); }
.scenarios { display: grid; gap: 10px; }
.proof-card span { display: block; font-size: 44px; color: var(--cyan); font-weight: 800; margin: 10px 0; }
.proof-card.wide { grid-column: span 3; }
.chain, .roadmap { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 12px; align-items: center; color: var(--muted); }
.advisor-card h3 { margin-top: 0; }
.advisor-card .pill { display: inline-block; padding: 5px 10px; border-radius: 999px; margin: 4px 4px 8px 0; background: rgba(71,216,255,.15); border: 1px solid rgba(71,216,255,.22); }
.limitations { margin-top: 18px; }
body.alarm-demo .status-chip, body.alarm-demo .risk-meter div { background: var(--red) !important; }
body.alarm-demo .ambient-a { background: var(--red); opacity: .35; }
@media (max-width: 980px) { .topbar { align-items: flex-start; flex-direction: column; } .hero-screen.active, .mnemo-layout, .control-grid, .proof-grid, .demo-layout, .actuator-layout { grid-template-columns: 1fr; } .proof-card.wide { grid-column: auto; } .hero-kpis { grid-template-columns: 1fr; } .process-board { min-height: 620px; } }


/* V2.21: инженерная объяснимость физики */
.physics-card {
  margin-top: 16px;
  padding: 18px;
  border-radius: 20px;
}
.physics-card h3 { margin-top: 0; }
.process-links ul, .risk-reasons ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.process-links li, .risk-reasons li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  border: 1px solid rgba(120, 190, 255, .20);
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(7, 16, 32, .44);
}
.process-links li span { color: var(--muted); }
.process-links li strong { color: var(--cyan, #47d8ff); }
.risk-reasons li::before { content: '•'; color: var(--amber, #ffcc66); margin-right: 8px; }
.risk-reasons li { justify-content: flex-start; }
.event-log ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; color: var(--muted); }
.event-log li {
  border-left: 2px solid rgba(71,216,255,.45);
  padding-left: 10px;
}
.demo-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
}
.demo-card {
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 22px;
  padding: 20px;
}
.demo-actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}
.demo-actions button {
  width: 100%;
}
.demo-actions button.attention {
  background: linear-gradient(135deg, rgba(255,209,102,.34), rgba(255,107,122,.2));
}
.demo-process-visual .mini-mnemo {
  height: 250px;
  margin-bottom: 12px;
  margin-top: 10px;
}
.demo-process-visual .mini-column {
  bottom: 14px;
}
.demo-mini-flow {
  animation: flowMoveHorizontal 1.2s linear infinite;
}
.demo-mini-flows {
  position: absolute;
  left: 16px;
  bottom: 16px;
  right: 16px;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}
.demo-mini-flows strong {
  color: var(--cyan);
}
.demo-process-visual .mini-liquid,
.demo-process-visual .mini-flow {
  pointer-events: none;
}
.timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.timeline-list li {
  border-left: 2px solid rgba(71,216,255,.45);
  padding: 8px 10px;
  border-radius: 12px;
  background: rgba(7,16,32,.38);
}
.timeline-list li.active {
  border-left-color: rgba(255,209,102,.75);
  background: rgba(255,209,102,.08);
}
.demo-columns {
  margin: 10px 0;
  color: var(--muted);
  border: 1px solid rgba(71,216,255,.12);
  border-radius: 14px;
  padding: 12px;
  background: rgba(5,14,28,.42);
}
.demo-column-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
}
.demo-column-window {
  border: 1px solid rgba(126, 210, 255, 0.22);
  border-radius: 12px;
  padding: 10px;
  background: linear-gradient(180deg, rgba(7, 18, 33, 0.84), rgba(4, 11, 22, 0.58));
}
.demo-column-window .column-title {
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.demo-column-window .column-metric {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 4px 0;
}
.state-points {
  margin-top: 16px;
  display: grid;
  gap: 8px;
  color: var(--muted);
}
.state-points span {
  color: var(--text);
  font-weight: 700;
}
.valve.closed {
  opacity: .55;
  border-color: rgba(255, 126, 145, .70) !important;
  box-shadow: 0 0 24px rgba(255, 126, 145, .16);
}
.control-card input[type="range"] { cursor: pointer; }
.control-card h3 + label { margin-top: 10px; }

.actuator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  gap: 16px;
}
.actuator-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}
.actuator-card {
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px;
  padding: 12px;
  background: rgba(5, 13, 27, .55);
}
.actuator-card h4 { margin: 0 0 8px; font-size: 15px; }
.actuator-state { margin: 0 0 10px; color: var(--muted); min-height: 24px; }
.actuator-btn-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}
.actuator-btn-row button {
  border: 1px solid rgba(137,207,255,.3);
  background: rgba(10,22,42,.68);
  color: var(--text);
  border-radius: 10px;
  padding: 8px 10px;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.actuator-btn-row button:hover,
.actuator-btn-row button:focus-visible {
  background: rgba(71,216,255,.15);
}
.actuator-btn-row button[aria-pressed="true"],
.actuator-btn-row button.is-active {
  border-color: rgba(71,216,255,.88);
  background: linear-gradient(135deg, rgba(71,216,255,.36), rgba(62,233,183,.24));
  color: #fff;
}