/* =====================================================================
   Заставка «Монтаж знака»: чертёж → заливка → прокладка сети → ворота
   Показывается один раз за визит. Без JS и при reduced-motion скрыта.
   ===================================================================== */
.loader { display: none; }

html.loader-active,
html.loader-active body { overflow: hidden; }

html.loader-active .loader {
  --lime: #C6E832;
  --green: #21A038;
  --ink: #0A0F0B;
  --k: 3.6;
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: block;
  color: #EEF3EC;
  pointer-events: auto;
  user-select: none;
}

/* ---------- Ворота площадки: две створки с единым фоном ---------- */
.loader__door {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50.2%;
  overflow: hidden;
  will-change: transform;
}
.loader__door--l { left: 0; }
.loader__door--r { right: 0; }
.loader__bg {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100vw;
  background:
    radial-gradient(ellipse 60% 55% at 50% 46%, #143320 0%, #0D1D13 42%, var(--ink) 78%);
}
.loader__door--l .loader__bg { left: 0; }
.loader__door--r .loader__bg { right: 0; }
.loader__grid {
  position: absolute;
  inset: -10%;
  opacity: 0;
  background-image:
    linear-gradient(#CFE9C914 1px, transparent 1px),
    linear-gradient(90deg, #CFE9C914 1px, transparent 1px),
    linear-gradient(#CFE9C908 1px, transparent 1px),
    linear-gradient(90deg, #CFE9C908 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
  background-position: center;
  -webkit-mask-image: radial-gradient(ellipse 55% 60% at 50% 46%, #000 10%, transparent 75%);
  mask-image: radial-gradient(ellipse 55% 60% at 50% 46%, #000 10%, transparent 75%);
}
.loader__glow {
  position: absolute;
  left: 50%;
  top: 46%;
  width: 70vmin;
  height: 70vmin;
  margin: -35vmin 0 0 -35vmin;
  border-radius: 50%;
  opacity: 0;
  background: radial-gradient(circle, #21A03838 0%, #21A03814 38%, transparent 70%);
  filter: blur(10px);
}
.loader__seam {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  margin-left: -1px;
  z-index: 3;
  background: linear-gradient(180deg, transparent, var(--lime) 30%, var(--lime) 70%, transparent);
  box-shadow: 0 0 24px 4px #C6E83266;
  transform: scaleY(0);
  opacity: 0;
}

/* ---------- Разметка: оси и угловые метки ---------- */
.loader__axis {
  position: absolute;
  z-index: 2;
  background: #C6E8321F;
  pointer-events: none;
}
.loader__axis--x { left: 0; right: 0; top: 46%; height: 1px; transform: scaleX(0); }
.loader__axis--y { top: 0; bottom: 0; left: 50%; width: 1px; transform: scaleY(0); }
.loader__frame { position: absolute; inset: clamp(16px, 3vw, 32px); z-index: 2; pointer-events: none; }
.loader__frame i {
  position: absolute;
  width: 22px;
  height: 22px;
  opacity: 0;
  border-color: #DDEFD766;
  border-style: solid;
  border-width: 0;
}
.loader__frame i:nth-child(1) { left: 0; top: 0; border-left-width: 1px; border-top-width: 1px; }
.loader__frame i:nth-child(2) { right: 0; top: 0; border-right-width: 1px; border-top-width: 1px; }
.loader__frame i:nth-child(3) { left: 0; bottom: 0; border-left-width: 1px; border-bottom-width: 1px; }
.loader__frame i:nth-child(4) { right: 0; bottom: 0; border-right-width: 1px; border-bottom-width: 1px; }

.loader__hud {
  position: absolute;
  z-index: 4;
  top: clamp(30px, 4.4vw, 52px);
  display: flex;
  align-items: center;
  gap: 10px;
  color: #A9BEAA;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  opacity: 0;
}
.loader__hud--tl { left: clamp(46px, 6vw, 80px); }
.loader__hud--tr { right: clamp(46px, 6vw, 80px); }
.loader__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 10px var(--lime);
  animation: loader-blink 1.2s steps(2, jump-none) infinite;
}

/* ---------- Знак: геометрия совпадает с логотипом в шапке ---------- */
.loader__lockup {
  position: absolute;
  z-index: 5;
  left: 0;
  top: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  transform-origin: 0 0;
  will-change: transform;
}
.loader__mark {
  position: relative;
  flex: none;
  width: calc(34px * 247 / 286);
  height: 34px;
}
.loader__blueprint {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  stroke: var(--lime);
  stroke-width: 3;
  stroke-linejoin: round;
}
.loader__blueprint path {
  stroke-dasharray: 1 1;
  stroke-dashoffset: 1;
  filter: drop-shadow(0 0 2px #C6E83299);
}
.loader__chev {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--i) * 56 / 247 * 100%);
  width: calc(136 / 247 * 100%);
  overflow: hidden;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 136 286'%3E%3Cpath d='M25 24H65c3 0 6 1 8 3l58 55c4 4 5 8 2 13L43 257c-2 4-5 5-9 5H5c-5 0-6-4-3-9L94 92c2-4 2-6-2-10L21 36c-5-4-3-12 4-12Z'/%3E%3C/svg%3E") 0 0 / 100% 100% no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 136 286'%3E%3Cpath d='M25 24H65c3 0 6 1 8 3l58 55c4 4 5 8 2 13L43 257c-2 4-5 5-9 5H5c-5 0-6-4-3-9L94 92c2-4 2-6-2-10L21 36c-5-4-3-12 4-12Z'/%3E%3C/svg%3E") 0 0 / 100% 100% no-repeat;
}
.loader__chev b {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 100%;
  background: #FFFFFF;
  transform: translateY(101%);
}
/* Раскалённая кромка, как у сварного шва, бежит вверх вместе с заливкой. */
.loader__chev b::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 22%;
  background: linear-gradient(180deg, #F4FF9A 0%, var(--lime) 18%, #21A03800 100%);
}
/* Финальный проход света по стрелкам. */
.loader__chev::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 30%, #C6E832 50%, transparent 70%);
  transform: translateX(-120%);
  mix-blend-mode: multiply;
}

.loader__word {
  display: flex;
  flex-direction: column;
  line-height: 1;
  font-family: 'Unbounded', var(--font-body);
  color: #fff;
  white-space: nowrap;
}
.loader__word > span { display: block; overflow: hidden; padding-right: 2px; }
.loader__word > span:first-child { font-size: 9px; font-weight: 500; letter-spacing: .24em; opacity: .86; margin-bottom: 4px; }
.loader__word > span:last-child { font-size: 18px; font-weight: 800; letter-spacing: -.01em; }
.loader__word b { display: block; font-weight: inherit; transform: translateX(-108%); }

.loader__tagline {
  position: absolute;
  z-index: 4;
  left: 0;
  right: 0;
  top: calc(46% + 92px);
  text-align: center;
  color: #A7BBA8;
  font: 500 12px/1.4 var(--font-mono);
  letter-spacing: .26em;
  text-transform: uppercase;
  opacity: 0;
}

/* ---------- Прокладка сети: реальный прогресс загрузки ---------- */
.loader__foot {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: clamp(52px, 9vh, 96px);
  width: min(460px, calc(100vw - 64px));
  transform: translateX(-50%);
  opacity: 0;
}
.loader__status {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #CFE0CC;
}
.loader__stage { display: inline-flex; align-items: center; gap: 8px; transition: color .3s; }
.loader__stage.is-swap { animation: loader-swap .32s ease-out; }
.loader__pct { color: #8FA690; font-variant-numeric: tabular-nums; }
.loader__pct b { color: var(--lime); font-weight: 600; }
.loader__pipe {
  position: relative;
  height: 4px;
  border-radius: 4px;
  background: #FFFFFF14;
}
/* Стыки трубы каждые 12,5 %. */
.loader__pipe::before {
  content: '';
  position: absolute;
  inset: -3px 0;
  background: repeating-linear-gradient(90deg, transparent 0 calc(12.5% - 1px), #FFFFFF2E calc(12.5% - 1px) 12.5%);
}
.loader__pipe-fill {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, #178A2D, var(--green) 45%, var(--lime));
  box-shadow: 0 0 14px #21A03888;
  transform-origin: left;
  transform: scaleX(0);
}
.loader__pipe-head {
  position: absolute;
  top: 50%;
  left: 0;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: #F6FFC9;
  box-shadow: 0 0 0 3px #C6E83255, 0 0 18px 4px #C6E832AA;
}
.loader__pipe-head s {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 3px;
  height: 3px;
  margin: -1.5px;
  border-radius: 50%;
  background: #F4FF9A;
  opacity: 0;
  animation: loader-spark .5s ease-out infinite;
}
.loader__pipe-head s:nth-child(2) { --sx: -12px; --sy: -11px; animation-delay: .17s; }
.loader__pipe-head s:nth-child(3) { --sx: -16px; --sy: 9px; animation-delay: .33s; }
.loader__ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 14px;
  font: 500 10px/1 var(--font-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #6F8571;
}
.loader__ticks span { transition: color .35s; }
.loader__ticks span.is-on { color: #DDEBD7; }

.loader__skip {
  position: absolute;
  z-index: 6;
  right: clamp(46px, 6vw, 80px);
  bottom: clamp(30px, 4.4vw, 52px);
  display: inline-flex;
  gap: 8px;
  padding: 10px 0;
  color: #9DB29E;
  font: 500 12px/1 var(--font-body);
  opacity: 0;
  transition: color .2s;
}
.loader__skip:hover { color: #fff; }
.loader__skip span { color: var(--lime); }

/* ---------- Сценарий ---------- */
.loader.is-run .loader__grid { animation: loader-fade 1s ease-out forwards, loader-drift 6s linear forwards; }
.loader.is-run .loader__glow { animation: loader-glow 1.4s ease-out forwards; }
.loader.is-run .loader__axis--x { animation: loader-axis-x 1s cubic-bezier(.65,0,.35,1) .1s forwards; }
.loader.is-run .loader__axis--y { animation: loader-axis-y 1s cubic-bezier(.65,0,.35,1) .18s forwards; }
.loader.is-run .loader__frame i { animation: loader-fade .6s ease-out .25s forwards; }
.loader.is-run .loader__hud { animation: loader-rise .7s cubic-bezier(.16,1,.3,1) .3s forwards; }
.loader.is-run .loader__skip { animation: loader-fade .5s ease-out .9s forwards; }
.loader.is-run .loader__foot { animation: loader-rise-x .7s cubic-bezier(.16,1,.3,1) .2s forwards; }
.loader.is-run .loader__blueprint path { animation: loader-draw .75s cubic-bezier(.65,0,.35,1) forwards, loader-outline-dim .5s ease 1.45s forwards; }
.loader.is-run .loader__blueprint path:nth-child(2) { animation-delay: .27s, 1.55s; }
.loader.is-run .loader__blueprint path:nth-child(3) { animation-delay: .39s, 1.65s; }
.loader.is-run .loader__blueprint path:nth-child(1) { animation-delay: .15s, 1.45s; }
.loader.is-run .loader__chev b { animation: loader-pour .7s cubic-bezier(.7,0,.25,1) calc(.62s + var(--i) * .14s) forwards; }
.loader.is-run .loader__chev b::before { animation: loader-fade-out .5s ease calc(1.2s + var(--i) * .14s) forwards; }

.loader__lockup { transition: transform .9s cubic-bezier(.16,1,.3,1); }
.loader.is-word .loader__word b { animation: loader-push .8s cubic-bezier(.16,1,.3,1) forwards; }
.loader.is-word .loader__word > span:last-child b { animation-delay: .07s; }
.loader.is-word .loader__tagline { animation: loader-rise .8s cubic-bezier(.16,1,.3,1) .25s forwards; }

.loader.is-done .loader__chev::after { animation: loader-flash .55s cubic-bezier(.65,0,.35,1) calc(var(--i) * .08s) forwards; }
.loader.is-done .loader__stage { color: var(--lime); }
.loader.is-done .loader__pipe-head s { animation: none; }

/* Выход: метки гаснут, ворота расходятся, знак улетает в шапку. */
.loader.is-exit { pointer-events: none; }
.loader.is-exit .loader__hud,
.loader.is-exit .loader__frame,
.loader.is-exit .loader__axis,
.loader.is-exit .loader__foot,
.loader.is-exit .loader__tagline,
.loader.is-exit .loader__skip { animation: loader-fade-out .28s ease forwards; }
.loader.is-exit .loader__seam { animation: loader-seam .5s cubic-bezier(.65,0,.35,1) forwards; }
.loader.is-exit .loader__door { transition: transform 1.05s cubic-bezier(.77,0,.18,1) .16s; }
.loader.is-exit .loader__door--l { transform: translateX(-101%); }
.loader.is-exit .loader__door--r { transform: translateX(101%); }
.loader.is-exit .loader__lockup { transition: transform .95s cubic-bezier(.7,0,.2,1) .05s; }
.loader.is-exit .loader__blueprint { opacity: 0; transition: opacity .3s; }

/* Пока заставка активна, логотип шапки ждёт перелёта знака. */
html.loader-active .header .logo { opacity: 0; }

@keyframes loader-fade { to { opacity: 1; } }
@keyframes loader-fade-out { to { opacity: 0; } }
@keyframes loader-rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes loader-rise-x { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }
@keyframes loader-drift { from { transform: perspective(900px) rotateX(14deg) scale(1.08) translateY(-12px); } to { transform: perspective(900px) rotateX(14deg) scale(1.08) translateY(12px); } }
@keyframes loader-glow { from { opacity: 0; transform: scale(.7); } to { opacity: 1; transform: none; } }
@keyframes loader-axis-x { to { transform: scaleX(1); } }
@keyframes loader-axis-y { to { transform: scaleY(1); } }
@keyframes loader-draw { to { stroke-dashoffset: 0; } }
@keyframes loader-outline-dim { to { opacity: 0; } }
@keyframes loader-pour { to { transform: translateY(0); } }
@keyframes loader-push { from { transform: translateX(-108%); } to { transform: translateX(0); } }
@keyframes loader-flash { from { transform: translateX(-120%); } to { transform: translateX(120%); } }
@keyframes loader-seam { 0% { opacity: 0; transform: scaleY(0); } 45% { opacity: 1; transform: scaleY(1); } 100% { opacity: 0; transform: scaleY(1); } }
@keyframes loader-swap { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes loader-blink { 50% { opacity: .25; } }
@keyframes loader-spark {
  0% { opacity: 1; transform: translate(0, 0) scale(1); }
  100% { opacity: 0; transform: translate(var(--sx, -14px), var(--sy, -4px)) scale(.4); }
}

@media (max-width: 600px) {
  .loader__hud { font-size: 9.5px; letter-spacing: .1em; }
  .loader__hud--tr { display: none; }
  .loader__tagline { font-size: 10px; letter-spacing: .2em; top: calc(46% + 72px); }
  .loader__ticks { font-size: 9px; letter-spacing: .06em; }
  .loader__skip { right: 50%; transform: translateX(50%); bottom: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html.loader-active .loader { display: none; }
}