/* =========================================================
   ДЕЛАЕМ САЙТЫ! — Industrial Skeuomorphism
   Токены дизайн-системы. Меняйте здесь — меняется везде.
   ========================================================= */

:root {
  /* --- Материалы --- */
  --bg:            #e0e5ec;  /* шасси — базовый пластик */
  --panel:         #f0f2f5;  /* приподнятая панель */
  --muted:         #d1d9e6;  /* утопленные зоны, пазы */
  --dark:          #2d3436;  /* тёмные технические панели */
  --dark-2:        #22282a;

  /* --- Текст --- */
  --text:          #2d3436;
  --text-muted:    #4a5568;
  --text-on-dark:  #ffffff;
  --text-on-dark-muted: #a8b2d1;

  /* --- Акцент (safety orange) --- */
  --accent:        #ff4757;
  --accent-fg:     #ffffff;
  --accent-dark:   #a6323c;
  --accent-light:  #ff646e;
  --green:         #22c55e;
  --amber:         #f59e0b;

  /* --- Границы света --- */
  --sh-dark:       #babecc;
  --sh-light:      #ffffff;
  --border-dark:   #a3b1c6;

  /* --- Тени (ядро стиля) --- */
  --shadow-card:      8px 8px 16px var(--sh-dark), -8px -8px 16px var(--sh-light);
  --shadow-floating:  12px 12px 24px var(--sh-dark), -12px -12px 24px var(--sh-light), inset 1px 1px 0 rgba(255,255,255,.5);
  --shadow-pressed:   inset 6px 6px 12px var(--sh-dark), inset -6px -6px 12px var(--sh-light);
  --shadow-recessed:  inset 4px 4px 8px var(--sh-dark), inset -4px -4px 8px var(--sh-light);
  --shadow-sharp:     4px 4px 8px rgba(0,0,0,.15), -1px -1px 1px rgba(255,255,255,.8);

  /* --- Радиусы --- */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-2xl: 32px;

  /* --- Механика --- */
  --ease: cubic-bezier(.175,.885,.32,1.275);
  --ease-out: cubic-bezier(.4,0,.2,1);

  /* --- Сетка ---
     Раскладка резиновая: колодца фиксированной ширины нет,
     контент занимает всю ширину окна, а поля растут вместе с ним. */
  --gutter: clamp(20px, 4.5vw, 80px);
}

/* ========================= RESET ========================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* Шум — микротекстура матового пластика */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .28;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
/* Световой хотспот сверху слева — источник света */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(900px 600px at 12% -5%, rgba(255,255,255,.85), transparent 65%);
}
main, .nav, .footer { position: relative; z-index: 1; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; letter-spacing: -.03em; line-height: 1.1; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
svg { width: 100%; height: 100%; }

/* ======================= КОНТЕЙНЕР ======================= */
.container {
  width: 100%;
  margin: 0 auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: none; }

/* При резиновой раскладке блоки тянутся, а строка текста — нет:
   длинная строка нечитаема, глаз теряет начало следующей. */
.req__text,
.req__why p,
.panel-dark__item p { max-width: 62ch; }

.section { padding: 96px 0; }
.section--brief { padding-top: 32px; }
.section__head { max-width: 720px; margin-bottom: 56px; }
.section__title {
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 800;
  margin: 12px 0 16px;
  text-shadow: 0 1px 0 #fff;
}
.section__lead {
  color: var(--text-muted);
  font-size: 1.06rem;
  max-width: 62ch;
}
.sub-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin: 64px 0 24px;
  text-shadow: 0 1px 0 #fff;
}

/* ======================= МЕТКИ / LED ======================= */
.eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--r-sm);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}

.led {
  width: 10px; height: 10px;
  border-radius: 999px;
  flex: none;
  display: inline-block;
  animation: pulse 2.4s ease-in-out infinite;
}
.led--green { background: var(--green); box-shadow: 0 0 10px 2px rgba(34,197,94,.65), inset 0 -1px 2px rgba(0,0,0,.3); }
.led--red   { background: var(--accent); box-shadow: 0 0 10px 2px rgba(255,71,87,.6), inset 0 -1px 2px rgba(0,0,0,.3); }
.led--amber { background: var(--amber); box-shadow: 0 0 10px 2px rgba(245,158,11,.55), inset 0 -1px 2px rgba(0,0,0,.3); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .45; } }

.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-card);
}
.status__label {
  font-family: 'JetBrains Mono', monospace;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text-muted);
}
.status--nav { padding: 6px 12px; box-shadow: var(--shadow-recessed); }

/* ======================== КНОПКИ ======================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 26px;
  border: none;
  border-radius: var(--r-lg);
  font-family: 'Inter', sans-serif;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 150ms var(--ease-out), box-shadow 150ms var(--ease-out),
              filter 150ms var(--ease-out), color 150ms var(--ease-out),
              background 150ms var(--ease-out);
}
.btn--sm { min-height: 42px; padding: 0 18px; font-size: .72rem; border-radius: var(--r-md); }
.btn--lg { min-height: 60px; padding: 0 34px; font-size: .88rem; border-radius: var(--r-xl); }
.btn--full { width: 100%; }

.btn--primary {
  background: var(--accent);
  color: var(--accent-fg);
  border: 1px solid rgba(255,255,255,.2);
  box-shadow: 4px 4px 8px rgba(166,50,60,.4), -4px -4px 8px rgba(255,100,110,.4);
  text-shadow: 0 1px 2px rgba(0,0,0,.25);
}
.btn--primary:hover { filter: brightness(1.1); }
.btn--primary:active {
  transform: translateY(2px);
  box-shadow: inset 4px 4px 8px rgba(166,50,60,.55), inset -4px -4px 8px rgba(255,100,110,.35);
}

.btn--secondary {
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--shadow-card);
}
.btn--secondary:hover { color: var(--accent); }
.btn--secondary:active { transform: translateY(2px); box-shadow: var(--shadow-pressed); }

.btn--ghost {
  background: transparent;
  color: var(--text-muted);
  min-height: 42px;
  padding: 0 16px;
  border-radius: var(--r-md);
  box-shadow: none;
}
.btn--ghost:hover { background: var(--bg); box-shadow: var(--shadow-recessed); color: var(--text); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ========================= НАВИГАЦИЯ ========================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(224,229,236,.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(186,190,204,.5);
}
.nav__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 76px;
}
.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand__plate {
  position: relative;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-floating);
}
.brand__plate--sm { width: 36px; height: 36px; }
.brand__mark {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: .82rem;
  color: var(--accent);
}
.brand__bolt {
  position: absolute;
  top: 4px; right: 4px;
  width: 4px; height: 4px;
  border-radius: 999px;
  background: rgba(0,0,0,.18);
  box-shadow: inset 0 1px 1px rgba(0,0,0,.35);
}
.brand__text {
  font-weight: 800;
  font-size: .95rem;
  letter-spacing: -.02em;
  text-shadow: 0 1px 0 #fff;
}
.brand__bang { color: var(--accent); }

.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__actions { display: flex; align-items: center; gap: 16px; }
.nav__phone {
  font-family: 'JetBrains Mono', monospace;
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: -.01em;
  white-space: nowrap;
  transition: color 150ms var(--ease-out);
}
.nav__phone:hover { color: var(--accent); }
.nav__burger {
  display: none;
  margin-left: auto;
  width: 48px; height: 48px;
  border: none;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  padding: 14px;
}
.nav__burger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  margin: 4px 0;
  transition: transform 200ms var(--ease-out), opacity 200ms;
}
.nav__burger[aria-expanded="true"] { box-shadow: var(--shadow-pressed); }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav__drawer {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 24px 24px;
  border-top: 1px solid rgba(186,190,204,.5);
  animation: drawer 200ms ease-out;
}
.nav__drawer[hidden] { display: none; }
.nav__drawer a:not(.btn) {
  padding: 14px 16px;
  border-radius: var(--r-md);
  font-weight: 600;
  color: var(--text-muted);
}
.nav__drawer a:not(.btn):active { box-shadow: var(--shadow-pressed); }
@keyframes drawer { from { opacity: 0; transform: translateY(-8px); } }

/* =========================== HERO =========================== */
.hero { padding: 72px 0 88px; }
.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: center;
}
.hero__title {
  font-size: clamp(2.6rem, 6.5vw, 4.4rem);
  font-weight: 800;
  margin: 24px 0 24px;
  text-shadow: 0 1px 1px #fff;
}
.hero__title .hl {
  color: var(--accent);
  text-shadow: 0 1px 0 rgba(255,255,255,.6);
}
.hero__lead {
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 58ch;
}

.hero__price {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin: 32px 0;
  padding: 20px;
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}
.hero__price-plate {
  display: flex;
  flex-direction: column;
  padding: 12px 22px;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  flex: none;
}
.hero__price-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text-muted);
}
.hero__price-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.hero__price-value span { font-size: 1.2rem; }
.hero__price-note {
  font-size: .88rem;
  color: var(--text-muted);
  max-width: 34ch;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; }
.hero__ticks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 32px;
  font-size: .9rem;
  color: var(--text-muted);
}
.hero__ticks li { display: flex; align-items: center; gap: 10px; }
.tick {
  width: 18px; height: 18px;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
  position: relative;
  flex: none;
}
.tick::after {
  content: '';
  position: absolute;
  inset: 5px;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 6px rgba(34,197,94,.7);
}

/* ---------- CSS-устройство ---------- */
.hero__device { display: flex; justify-content: center; }
.device {
  position: relative;
  width: 100%;
  max-width: 520px;
  padding: 18px;
  border-radius: var(--r-2xl);
  background: var(--bg);
  box-shadow: var(--shadow-floating);
  transition: transform 400ms var(--ease-out);
}
.device:hover { transform: scale(1.015); }
.device__bezel {
  border-radius: var(--r-xl);
  padding: 4px;
  background: linear-gradient(160deg, #3a4143, var(--dark-2));
  box-shadow: inset 0 2px 4px rgba(255,255,255,.12), 0 6px 16px rgba(0,0,0,.28);
  position: relative;
  overflow: hidden;
}
/* карбон */
.device__bezel::after {
  content: '';
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.08) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(-45deg, rgba(0,0,0,.25) 0 1px, transparent 1px 4px);
}
.device__topbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
}
.device__dot {
  width: 8px; height: 8px;
  border-radius: 999px;
  background: #4d5658;
  box-shadow: inset 0 1px 1px rgba(0,0,0,.6);
}
.device__url {
  flex: 1;
  margin-left: 8px;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  background: rgba(0,0,0,.35);
  box-shadow: inset 0 1px 3px rgba(0,0,0,.6);
  font-family: 'JetBrains Mono', monospace;
  font-size: .6rem;
  color: #7e8a8c;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.device__pwr { width: 8px; height: 8px; }

.device__screen {
  position: relative;
  margin: 0 6px 6px;
  padding: 18px;
  border-radius: var(--r-md);
  background: #14181a;
  box-shadow: inset 0 4px 14px rgba(0,0,0,.9);
  aspect-ratio: 4/3;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.scanlines {
  position: absolute; inset: 0;
  pointer-events: none;
  background: linear-gradient(rgba(18,16,16,0) 50%, rgba(0,0,0,.25) 50%);
  background-size: 100% 4px;
  z-index: 3;
}
.screen__head { display: flex; justify-content: space-between; gap: 8px; }
.screen__tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: .55rem;
  letter-spacing: .1em;
  color: #5d6a6c;
  padding: 3px 8px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(255,255,255,.08);
}
.screen__tag--accent {
  color: var(--accent);
  border-color: rgba(255,71,87,.4);
  text-shadow: 0 0 8px rgba(255,71,87,.6);
}
.screen__hero { display: flex; flex-direction: column; gap: 8px; }
.bar { display: block; border-radius: 3px; background: #2c3436; }
.bar--xl { height: 14px; width: 78%; background: linear-gradient(90deg,#4a5658,#2c3436); }
.bar--lg { height: 10px; width: 62%; }
.bar--md { height: 7px; width: 45%; }
.bar--sm { height: 6px; width: 70%; }
.bar--xs { height: 5px; width: 45%; margin-top: 6px; }
.screen__btns { display: flex; gap: 8px; margin-top: 6px; }
.screen__btn {
  height: 16px; width: 56px;
  border-radius: 4px;
  background: #2c3436;
}
.screen__btn--accent {
  background: var(--accent);
  box-shadow: 0 0 12px rgba(255,71,87,.5);
}
.screen__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin-top: auto; }
.screen__cell {
  padding: 10px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,.035);
  border: 1px solid rgba(255,255,255,.05);
  min-height: 52px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.spinner {
  width: 18px; height: 18px;
  border-radius: 999px;
  border: 2px solid rgba(255,255,255,.12);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
  margin: 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }
.screen__progress {
  height: 5px;
  border-radius: 999px;
  background: rgba(0,0,0,.5);
  overflow: hidden;
  box-shadow: inset 0 1px 2px rgba(0,0,0,.8);
}
.screen__progress-fill {
  display: block;
  height: 100%;
  width: 87%;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(255,71,87,.7);
}

.device__side {
  position: absolute;
  right: -4px;
  width: 4px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--sh-dark), #9aa1af);
  box-shadow: 1px 0 2px rgba(0,0,0,.2);
}
.device__side--1 { top: 96px; height: 46px; }
.device__side--2 { top: 156px; height: 30px; }
.device__foot {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 14px 6px 2px;
}
.device__vent {
  width: 4px; height: 20px;
  border-radius: 999px;
  background: var(--muted);
  box-shadow: inset 1px 1px 2px rgba(0,0,0,.22);
}
.device__plate {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: .58rem;
  letter-spacing: .12em;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}

/* =========================== СТАТИСТИКА =========================== */
.stats { padding-bottom: 32px; }
.stats__panel {
  border-radius: var(--r-2xl);
  background: linear-gradient(150deg, #343c3e, var(--dark));
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.1);
  overflow: hidden;
  position: relative;
}
.stats__panel::after {
  content: '';
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: .12;
  background-image:
    repeating-linear-gradient(45deg, rgba(255,255,255,.09) 0 1px, transparent 1px 4px),
    repeating-linear-gradient(-45deg, rgba(0,0,0,.3) 0 1px, transparent 1px 4px);
}
.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.07);
}
.stat {
  background: var(--dark);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  z-index: 1;
}
.stat__value {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1.4rem, 3.4vw, 1.9rem);
  font-weight: 700;
  color: #fff;
  text-shadow: 0 2px 4px rgba(0,0,0,.4);
}
.stat__label {
  font-family: 'JetBrains Mono', monospace;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text-on-dark-muted);
}
.stats__strip {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 24px;
  background: rgba(0,0,0,.28);
  font-family: 'JetBrains Mono', monospace;
  font-size: .64rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text-on-dark-muted);
  position: relative;
  z-index: 1;
}

/* ============================ КАРТОЧКИ ============================ */
.cards { display: grid; grid-template-columns: 1fr; gap: 28px; }
.cards--tight { gap: 20px; }

.card {
  position: relative;
  padding: 32px;
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  transition: transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
  overflow: hidden;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-floating); }

/* винты по углам */
.card__screws {
  position: absolute; inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 12px 12px, rgba(0,0,0,.16) 2px, rgba(255,255,255,.7) 2.6px, transparent 3.4px),
    radial-gradient(circle at calc(100% - 12px) 12px, rgba(0,0,0,.16) 2px, rgba(255,255,255,.7) 2.6px, transparent 3.4px),
    radial-gradient(circle at 12px calc(100% - 12px), rgba(0,0,0,.16) 2px, rgba(255,255,255,.7) 2.6px, transparent 3.4px),
    radial-gradient(circle at calc(100% - 12px) calc(100% - 12px), rgba(0,0,0,.16) 2px, rgba(255,255,255,.7) 2.6px, transparent 3.4px);
}
/* вентиляционные прорези */
.card__vents {
  position: absolute;
  top: 24px; right: 28px;
  display: flex;
  gap: 4px;
}
.card__vents i {
  width: 3px; height: 22px;
  border-radius: 999px;
  background: var(--muted);
  box-shadow: inset 1px 1px 2px rgba(0,0,0,.14);
}

.icon-housing {
  width: 58px; height: 58px;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-floating);
  color: var(--accent);
  margin-bottom: 22px;
  transition: transform 200ms var(--ease);
}
.icon-housing svg { width: 26px; height: 26px; }
.card:hover .icon-housing { transform: scale(1.1) rotate(-8deg); }

.card__title { font-size: 1.22rem; font-weight: 700; margin-bottom: 12px; text-shadow: 0 1px 0 #fff; }
.card__title--sm { font-size: 1.05rem; }
.card__text { color: var(--text-muted); font-size: .95rem; }
.card__meta {
  display: inline-block;
  margin-top: 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--r-sm);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}

/* --------- Слоты «что прислать» --------- */
.card--slot { padding: 26px 26px 28px; }
.slot__num {
  display: inline-grid;
  place-items: center;
  width: 38px; height: 38px;
  border-radius: var(--r-sm);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.slot__num--accent { color: var(--accent); font-size: 1.1rem; }
.card--slot-note { background: var(--muted); box-shadow: var(--shadow-recessed); }
.card--slot-note:hover { transform: none; box-shadow: var(--shadow-recessed); }

/* --------- Обязательные требования 01 / 02 --------- */
.req {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.req__card {
  position: relative;
  padding: 36px 32px 32px;
  border-radius: var(--r-xl);
  background: var(--bg);
  box-shadow: var(--shadow-floating);
  border-top: 3px solid var(--accent);
  /* Запасной вариант: плашка «зачем» прижата к низу карточки */
  display: flex;
  flex-direction: column;
}
.req__num {
  position: absolute;
  top: -18px; left: 32px;
  display: grid; place-items: center;
  width: 52px; height: 52px;
  border-radius: var(--r-md);
  background: var(--accent);
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 4px 4px 10px rgba(166,50,60,.45), -3px -3px 8px rgba(255,100,110,.4);
  text-shadow: 0 1px 2px rgba(0,0,0,.3);
}
.req__badge {
  display: inline-block;
  margin: 22px 0 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent);
  padding: 5px 11px;
  border-radius: var(--r-sm);
  background: rgba(255,71,87,.09);
  box-shadow: inset 0 0 0 1px rgba(255,71,87,.28);
}
.req__title { font-size: 1.4rem; font-weight: 800; margin-bottom: 14px; text-shadow: 0 1px 0 #fff; }
.req__text { color: var(--text-muted); font-size: 1rem; margin-bottom: 22px; }
.req__text em { color: var(--text); font-style: normal; font-weight: 600; }
.req__why {
  margin-top: auto;
  padding: 20px;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}
.req__why-label {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 8px;
}
.req__why p { font-size: .92rem; color: var(--text-muted); }

/* --------- Тёмная панель «почему это важно» --------- */
.panel-dark {
  margin-top: 64px;
  padding: 44px;
  border-radius: var(--r-2xl);
  background: linear-gradient(150deg, #343c3e, var(--dark));
  box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,.1);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}
.panel-dark::after {
  content: '';
  position: absolute; inset: 0;
  pointer-events: none;
  opacity: .1;
  background-image:
    linear-gradient(rgba(255,255,255,.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.4) 1px, transparent 1px);
  background-size: 40px 40px;
}
.panel-dark > * { position: relative; z-index: 1; }
.panel-dark__head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.panel-dark__eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: .64rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--text-on-dark-muted);
}
.panel-dark__title {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  max-width: 24ch;
  margin-bottom: 36px;
  text-shadow: 0 2px 4px rgba(0,0,0,.3);
}
.panel-dark__grid { display: grid; grid-template-columns: 1fr; gap: 28px; }
.panel-dark__item {
  padding: 24px;
  border-radius: var(--r-lg);
  background: rgba(255,255,255,.045);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.09);
}
.panel-dark__num {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
  text-shadow: 0 0 16px rgba(255,71,87,.45);
}
.panel-dark__item p { font-size: .94rem; color: var(--text-on-dark-muted); }
.panel-dark__item strong { color: #fff; }
.panel-dark__foot {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.1);
  font-size: .92rem;
  color: var(--text-on-dark-muted);
  max-width: 70ch;
}

/* ============================ ШАГИ ============================ */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
.steps__pipe { display: none; }
.step {
  position: relative;
  padding: 32px 28px;
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  transition: transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
}
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow-floating); }
.step__node {
  display: grid; place-items: center;
  width: 50px; height: 50px;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-floating);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
}
.step__title { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; text-shadow: 0 1px 0 #fff; }
.step__text { color: var(--text-muted); font-size: .94rem; }
.step__meta {
  display: inline-block;
  margin-top: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--accent);
}

/* ============================ СТЕК ============================ */
.stacks {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.stack {
  position: relative;
  padding: 30px 26px;
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  transition: transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
}
.stack:hover { transform: translateY(-4px); box-shadow: var(--shadow-floating); }

/* Логотипы приглушены до монохрома и оживают при наведении —
   тот же приём, что и для фотографий в этом стиле. */
.stack__logo {
  display: grid;
  place-items: center;
  width: 64px; height: 64px;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
  margin-bottom: 20px;
}
.stack__logo svg {
  width: 34px; height: 34px;
  filter: grayscale(1) contrast(.75) opacity(.65);
  transition: filter 500ms var(--ease-out), transform 300ms var(--ease);
}
.stack:hover .stack__logo svg {
  filter: none;
  transform: scale(1.08);
}
.stack__name {
  font-family: 'JetBrains Mono', monospace;
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: -.01em;
  margin-bottom: 10px;
  text-shadow: 0 1px 0 #fff;
}
.stack__text { color: var(--text-muted); font-size: .9rem; }

/* ============================ ЦЕНЫ ============================ */
.pricing { align-items: start; }
.price-card {
  position: relative;
  padding: 46px 30px 32px;
  border-radius: var(--r-xl);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  transition: transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
  display: flex;
  flex-direction: column;
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-floating); }
.price-card__hole {
  position: absolute;
  top: 16px; left: 50%;
  transform: translateX(-50%);
  width: 34px; height: 8px;
  border-radius: 999px;
  background: var(--muted);
  box-shadow: inset 0 2px 4px rgba(0,0,0,.32), 0 1px 0 rgba(255,255,255,.85);
}
.price-card--featured {
  box-shadow: var(--shadow-floating);
  border: 2px solid rgba(255,71,87,.35);
}
.price-card__flag {
  position: absolute;
  top: 30px; right: -6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: #fff;
  background: var(--accent);
  padding: 6px 12px;
  border-radius: var(--r-sm) 0 0 var(--r-sm);
  box-shadow: var(--shadow-sharp);
}
.price-card__name {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.price-card__value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-shadow: 0 1px 0 #fff;
}
.price-card__from {
  font-size: .78rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: lowercase;
}
.price-card__note { color: var(--text-muted); font-size: .9rem; margin-top: 8px; }
.price-card__list {
  margin: 26px 0 28px;
  padding-top: 24px;
  border-top: 1px solid var(--sh-dark);
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}
.price-card__list li {
  position: relative;
  padding-left: 26px;
  font-size: .93rem;
  color: var(--text-muted);
}
.price-card__list li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 12px; height: 12px;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}
.price-card__list li::after {
  content: '';
  position: absolute;
  left: 4px; top: 12px;
  width: 4px; height: 4px;
  border-radius: 999px;
  background: var(--accent);
}

.price-note {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  max-width: 760px;
  margin-top: 36px;
  padding: 24px 28px;
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}
.price-note .led { margin-top: 7px; }
.price-note p { font-size: .93rem; color: var(--text-muted); }
.price-note strong { color: var(--text); }

/* ============================= FAQ ============================= */
/* Плашки не растягиваются на всю ширину: ширина подобрана так,
   чтобы текст внутри заполнял плашку, а не висел в ней полоской. */
.faq { display: flex; flex-direction: column; gap: 14px; max-width: 760px; }
.faq__item {
  border-radius: var(--r-lg);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow 300ms var(--ease-out);
}
.faq__item[open] { box-shadow: var(--shadow-recessed); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 26px;
  font-weight: 700;
  font-size: 1.02rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: '';
  flex: none;
  width: 26px; height: 26px;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-card);
  background-image: linear-gradient(var(--accent), var(--accent)), linear-gradient(var(--accent), var(--accent));
  background-size: 10px 2px, 2px 10px;
  background-position: center, center;
  background-repeat: no-repeat;
  transition: transform 250ms var(--ease);
}
.faq__item[open] summary::after {
  background-size: 10px 2px, 0 0;
  transform: rotate(180deg);
  box-shadow: var(--shadow-pressed);
}
.faq__body { padding: 0 26px 24px; }
.faq__body p { color: var(--text-muted); font-size: .96rem; }

/* ============================ ЗАЯВКА ============================ */
.section--order { padding-bottom: 96px; }
.order {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 44px 32px;
  border-radius: var(--r-2xl);
  background: var(--bg);
  box-shadow: var(--shadow-floating);
}
.order__title {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 800;
  margin: 14px 0 16px;
  text-shadow: 0 1px 0 #fff;
}
.order__lead { color: var(--text-muted); max-width: 44ch; }
.order__contacts { display: flex; flex-direction: column; gap: 12px; margin-top: 32px; }
.contact {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out);
}
.contact:hover { transform: translateY(-2px); box-shadow: var(--shadow-floating); }
.contact:active { transform: translateY(1px); box-shadow: var(--shadow-pressed); }
.contact__icon {
  width: 40px; height: 40px;
  flex: none;
  display: grid; place-items: center;
  border-radius: 999px;
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
  color: var(--accent);
}
.contact__icon svg { width: 18px; height: 18px; }
.contact__label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text-muted);
}
.contact__value { display: block; font-weight: 600; font-size: .98rem; }

.order__form {
  padding: 30px 26px;
  border-radius: var(--r-xl);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
}
.form__head { display: flex; align-items: center; gap: 10px; margin-bottom: 24px; }
.form__title {
  font-family: 'JetBrains Mono', monospace;
  font-size: .66rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--text-muted);
}
.field { display: block; margin-bottom: 18px; }
.field__label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: .58rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 56px;
  padding: 16px 20px;
  border: none;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-recessed);
  font-family: 'JetBrains Mono', monospace;
  font-size: .92rem;
  color: var(--text);
  resize: vertical;
}
.field textarea { min-height: auto; line-height: 1.6; }
.field select { appearance: none; cursor: pointer; }
.field input::placeholder,
.field textarea::placeholder { color: var(--text-muted); opacity: .5; }
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  outline: none;
  box-shadow: var(--shadow-recessed), 0 0 0 2px var(--accent);
}
.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  box-shadow: var(--shadow-recessed), 0 0 0 2px var(--accent);
}
.form__hint { margin-top: 14px; font-size: .78rem; color: var(--text-muted); }
.form__done {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  background: var(--bg);
  box-shadow: var(--shadow-card);
  font-size: .92rem;
  font-weight: 600;
}
.form__done[hidden] { display: none; }

/* ============================ ПОДВАЛ ============================ */
.footer {
  border-top: 1px solid var(--sh-dark);
  padding: 40px 0;
  background: var(--bg);
}
.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 26px;
  align-items: center;
  text-align: center;
}
.footer__brand { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.footer__links { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 14px; }
.footer__links a {
  font-size: .9rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 8px;
  border-radius: var(--r-sm);
}
.footer__links a:active { box-shadow: var(--shadow-pressed); }
.footer__links a:hover { color: var(--accent); }
.footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--text-muted);
}
.footer__meta a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  transition: color 150ms var(--ease-out);
}
.footer__meta a:hover { color: var(--accent); }
.footer__phone { font-size: .8rem; color: var(--text); }
.footer__site {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  letter-spacing: .08em;
}

/* =========================================================
   ПЛАНШЕТ — 768px+
   ========================================================= */
@media (min-width: 768px) {
  .cards--3 { grid-template-columns: repeat(2, 1fr); }
  .stacks { grid-template-columns: repeat(3, 1fr); }
  .req { grid-template-columns: repeat(2, 1fr); }

  /* Строки карточек 01 и 02 общие: бейдж, заголовок, текст и плашка
     «зачем» встают на одном уровне в обеих, несмотря на разную
     длину текста сверху. */
  @supports (grid-template-rows: subgrid) {
    .req {
      grid-template-rows: auto auto auto auto;
      row-gap: 14px;
    }
    .req__card {
      display: grid;
      grid-template-rows: subgrid;
      grid-row: span 4;
    }
    .req__badge { margin: 22px 0 0; }
    .req__title { margin-bottom: 0; }
    .req__text  { margin-bottom: 0; }
    .req__why   { margin-top: 8px; align-self: stretch; }
  }
  .stats__grid { grid-template-columns: repeat(4, 1fr); }
  .panel-dark__grid { grid-template-columns: repeat(3, 1fr); }
  .order { grid-template-columns: 1fr 1fr; gap: 48px; padding: 56px 48px; }
  .order__form { padding: 34px 32px; }
  .footer__inner { flex-direction: row; justify-content: space-between; text-align: left; }

  /* Трубопровод между шагами */
  .steps { grid-template-columns: repeat(4, 1fr); gap: 20px; }
  .steps__pipe {
    display: block;
    position: absolute;
    top: 57px;
    left: 12%;
    right: 12%;
    height: 12px;
    border-radius: 999px;
    background: var(--muted);
    box-shadow: inset 0 2px 5px rgba(0,0,0,.22), 0 1px 0 rgba(255,255,255,.8);
    z-index: 0;
  }
  .step { z-index: 1; }
}

/* =========================================================
   ДЕСКТОП — 1024px+
   ========================================================= */
@media (min-width: 1024px) {
  .hero { padding: 88px 0 104px; }
  .hero__grid { grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 64px; }
  .cards--3 { grid-template-columns: repeat(3, 1fr); }
  .stacks { grid-template-columns: repeat(5, 1fr); }
  .section { padding: 112px 0; }
  .panel-dark { padding: 56px; }
}

/* =========================================================
   ШИРОКИЕ МОНИТОРЫ — 1600px+
   Свободную ширину отдаём под колонки, а не под пустоту.
   Тарифов всего три — они остаются в трёх колонках.
   ========================================================= */
@media (min-width: 1600px) {
  .cards--3:not(.pricing) { grid-template-columns: repeat(4, 1fr); }
  .device { max-width: 620px; }
}

@media (min-width: 2100px) {
  .cards--3:not(.pricing) { grid-template-columns: repeat(5, 1fr); }

  /* Блоки, которым бесконечная ширина только вредит: тянутся
     до предела и дальше центрируются, а не расползаются. */
  .pricing { max-width: 1800px; margin-inline: auto; }
  .order   { max-width: 1900px; margin-inline: auto; }
}

/* =========================================================
   МОБИЛЬНОЕ — до 900px
   ========================================================= */
@media (max-width: 900px) {
  .nav__links, .nav__actions { display: none; }
  .nav__burger { display: block; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .section { padding: 64px 0; }
  .card, .step { padding: 26px 22px; }
  .req__card { padding: 32px 24px 26px; }
  .panel-dark { padding: 32px 24px; }
  .order { padding: 32px 22px; }
  .order__form { padding: 26px 20px; }
  .price-card { padding: 42px 24px 28px; }
  .hero__cta .btn { width: 100%; }
  .card__vents { display: none; }
  .device__screen { aspect-ratio: 1/1; }
}

/* =========================================================
   ДОСТУПНОСТЬ
   ========================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .nav, .hero__device, .order__form { display: none; }
  body::before, body::after { display: none; }
}