/* ==========================================================================
   SIGNALAB — статичный лендинг
   Шрифты и токены — в assets/css/tokens.css
   3. Сброс и базовая типографика
   4. Утилиты и раскладка
   5. Компоненты (кнопки, карточки, теги, списки)
   6. Шапка и навигация
   7. Hero
   8. Секции
   9. Контакты и футер
  10. Анимации и адаптив
   ========================================================================== */

/* ==========================================================================
   3. Сброс и базовая типографика
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-text);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--body);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 800;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.15rem, 1.35rem + 3.4vw, 3.75rem);
}

h2 {
  font-size: clamp(1.7rem, 1.2rem + 2.1vw, 2.65rem);
}

h3 {
  font-size: clamp(1.15rem, 1.03rem + 0.5vw, 1.4rem);
  font-weight: 700;
}

h4 {
  font-size: 1.05rem;
  font-weight: 700;
}

p {
  text-wrap: pretty;
}

a {
  color: var(--navy-700);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--orange-600);
}

img,
svg {
  display: block;
  max-width: 100%;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: 0;
  background: none;
}

strong {
  font-weight: 650;
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--orange-200);
  color: var(--navy-900);
}

/* ==========================================================================
   4. Утилиты и раскладка
   ========================================================================== */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap--narrow {
  max-width: 900px;
}

.section {
  position: relative;
  padding-block: clamp(4rem, 2.5rem + 5vw, 7.5rem);
}

.section--tight {
  padding-block: clamp(3rem, 2rem + 3.5vw, 5rem);
}

.section--tint {
  background: var(--surface-alt);
}

.section--dark {
  background: var(--dark-bg);
  color: var(--dark-muted);
  overflow: hidden;
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: #fff;
}

.section--dark strong {
  color: #fff;
}

.section--dark a {
  color: var(--orange-300);
}

.section--dark a:hover {
  color: var(--orange);
}

/* Диагональная подложка тёмных секций — тот же наклон, что у эмблемы */
.section--dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
      135deg,
      rgba(255, 255, 255, 0.045) 0 1px,
      transparent 1px 26px
    ),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 182px);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, #000 30%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 20%, #000 30%, transparent 78%);
  pointer-events: none;
}

.section--dark > .wrap {
  position: relative;
  z-index: 1;
}

.section-head {
  max-width: 780px;
  margin-bottom: clamp(2.25rem, 1.5rem + 2.5vw, 3.5rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
}

.section-head__lead {
  margin-top: 1.05rem;
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.13rem);
  color: var(--body);
}

.section--dark .section-head__lead {
  color: var(--dark-muted);
}

/* Надзаголовок с мотивом логотипа */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-600);
}

/* Диагональная «стрелка» из эмблемы логотипа */
.eyebrow::before {
  content: '';
  width: 14px;
  height: 14px;
  flex: none;
  background: currentColor;
  clip-path: polygon(0 100%, 100% 0, 100% 30%, 30% 100%);
}

.section--dark .eyebrow {
  color: var(--orange-300);
}

.text-accent {
  color: var(--orange);
}

/* Иконка по умолчанию там, где размер не задан контекстом */
.ico {
  flex: none;
  width: 20px;
  height: 20px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.grid {
  display: grid;
  gap: clamp(1rem, 0.7rem + 1vw, 1.5rem);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
}

/* ==========================================================================
   5. Компоненты
   ========================================================================== */

/* --- Кнопки --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.97rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.2;
  white-space: nowrap;
  transition: transform 0.2s var(--ease), box-shadow 0.25s var(--ease),
    background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.btn:active {
  transform: translateY(1px);
}

.btn svg {
  flex: none;
  width: 18px;
  height: 18px;
}

/* Тёмная надпись на фирменном оранжевом: сохраняет цвет бренда и даёт контраст 6,6:1 */
.btn--primary {
  background: linear-gradient(135deg, var(--orange-400) 0%, var(--orange) 100%);
  color: var(--navy-950);
  box-shadow: var(--shadow-orange);
}

.btn--primary:hover {
  color: var(--navy-950);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(238, 122, 55, 0.42);
}

.btn--solid {
  background: var(--navy);
  color: #fff;
}

.btn--solid:hover {
  color: #fff;
  background: var(--navy-700);
  transform: translateY(-2px);
}

.btn--ghost {
  border: 1.5px solid var(--navy-200);
  color: var(--navy-700);
  background: var(--surface);
}

.btn--ghost:hover {
  border-color: var(--navy-500);
  color: var(--navy-800);
  transform: translateY(-2px);
}

.btn--outline-light {
  border: 1.5px solid rgba(232, 240, 248, 0.28);
  color: #fff;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(6px);
}

.btn--outline-light:hover {
  color: #fff;
  border-color: rgba(232, 240, 248, 0.6);
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.6rem 1.15rem;
  font-size: 0.88rem;
}

.btn--block {
  width: 100%;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* --- Теги и чипы --- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: var(--navy-50);
  border: 1px solid var(--navy-100);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--navy-700);
  white-space: nowrap;
}

.tag--orange {
  background: var(--orange-50);
  border-color: var(--orange-200);
  color: var(--orange-700);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.section--dark .tag {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--dark-line);
  color: var(--navy-200);
}

/* --- Иконки в квадрате --- */
.icon-box {
  display: grid;
  place-items: center;
  flex: none;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(140deg, var(--navy-50), #fff);
  border: 1px solid var(--navy-100);
  color: var(--navy-700);
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease),
    border-color 0.25s var(--ease);
}

.icon-box svg {
  width: 26px;
  height: 26px;
}

.icon-box--orange {
  background: linear-gradient(140deg, var(--orange-50), #fff);
  border-color: var(--orange-200);
  color: var(--orange-600);
}

.section--dark .icon-box {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--dark-line);
  color: var(--orange-300);
}

/* --- Карточки --- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: clamp(1.35rem, 1.1rem + 0.8vw, 1.9rem);
  border-radius: var(--radius-xs);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
    border-color 0.28s var(--ease);
}

/* Иконка и метка идут одной строкой — компактнее, чем стопкой, и читаются
   как единая шапка карточки */
.card__head {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* В тесной колонке текст переносится внутри самой пилюли, а не роняет её
   под иконку: так шапки всех карточек в ряду остаются на одной высоте.
   Ужаться меньше min-content флексу не даст, поэтому вылезти текст не может. */
.card__head .tag {
  white-space: normal;
  text-align: center;
}

.card__title {
  margin-top: 1.1rem;
  margin-bottom: 0.6rem;
}

.card__text {
  font-size: 0.96rem;
}

.card__foot {
  margin-top: auto;
  padding-top: 1.15rem;
}

.card--hover:hover {
  transform: translateY(-5px);
  border-color: var(--navy-200);
  box-shadow: var(--shadow-lg);
}

.card--hover:hover .icon-box {
  background: linear-gradient(140deg, var(--orange), var(--orange-600));
  border-color: transparent;
  color: #fff;
}

/* Угловой срез — мотив логотипа */
.card--notch::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 30px;
  height: 30px;
  /* border-radius: 0 var(--radius-xs) 0 0; */
  background: linear-gradient(225deg, var(--orange) 0 46%, transparent 46%);
  opacity: 0.9;
  transition: opacity 0.28s var(--ease);
}

.card--dark {
  background: var(--dark-card);
  border-color: var(--dark-line);
  box-shadow: none;
  backdrop-filter: blur(4px);
}

.card--dark:hover {
  border-color: rgba(157, 185, 214, 0.4);
  background: rgba(255, 255, 255, 0.075);
}

/* --- Списки --- */
.list {
  display: grid;
  gap: 0.6rem;
  font-size: 0.94rem;
}

.list li {
  position: relative;
  padding-left: 1.5rem;
}

.list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 9px;
  height: 9px;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 50%, 0 100%, 28% 50%);
}

.list--check li::before {
  top: 0.42em;
  width: 13px;
  height: 13px;
  background: var(--orange);
  clip-path: polygon(41% 66%, 82% 12%, 100% 27%, 45% 100%, 0 62%, 15% 45%);
}

.list--tight {
  gap: 0.42rem;
  font-size: 0.9rem;
}

.list--two {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  column-gap: 1.5rem;
}

.section--dark .list {
  color: var(--dark-muted);
}

/* --- Плашка результата --- */
.callout {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem 1.05rem;
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  border-left: 3px solid var(--orange);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--navy-800);
}

.callout svg {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  color: var(--orange-600);
}

.section--dark .callout {
  background: rgba(238, 122, 55, 0.1);
  color: #fff;
}

/* --- Метрики и счётчики --- */
.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.metric {
  padding: 1.4rem 1.2rem;
  background: var(--surface);
  text-align: center;
}

.metric__num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 1.4rem + 1.4vw, 2.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
}

.metric__num span {
  color: var(--orange);
}

.metric__label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.86rem;
  color: var(--muted);
}

.section--dark .metrics {
  background: var(--dark-line);
  border-color: var(--dark-line);
}

.section--dark .metric {
  background: rgba(255, 255, 255, 0.03);
}

.section--dark .metric__num {
  color: #fff;
}

.section--dark .metric__label {
  color: var(--dark-muted);
}

/* --- Табы --- */
.tabs__list {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 1.6rem;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
  /* Подсказка о горизонтальной прокрутке на узких экранах */
  -webkit-mask-image: linear-gradient(90deg, #000 0 calc(100% - 40px), transparent 100%);
  mask-image: linear-gradient(90deg, #000 0 calc(100% - 40px), transparent 100%);
}

@media (min-width: 1180px) {
  .tabs__list {
    -webkit-mask-image: none;
    mask-image: none;
  }
}

.tabs__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--dark-line);
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--navy-200);
  white-space: nowrap;
  transition: all 0.22s var(--ease);
}

.tabs__btn:hover {
  color: #fff;
  border-color: rgba(157, 185, 214, 0.45);
}

.tabs__btn[aria-selected='true'] {
  background: linear-gradient(135deg, var(--orange-400), var(--orange));
  border-color: transparent;
  color: var(--navy-950);
  box-shadow: var(--shadow-orange);
}

.tabs__btn .tabs__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.75;
}

.tabs__panel[hidden] {
  display: none;
}

.tabs__panel {
  animation: fade-up 0.4s var(--ease);
}

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(1.25rem, 1rem + 1.5vw, 2.5rem);
  align-items: start;
}

.panel-grid__aside {
  padding: clamp(1.25rem, 1rem + 0.8vw, 1.75rem);
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--dark-line);
}

.panel-grid__aside h4 {
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange-300);
}

/* Пары «параметр — значение» */
.specs {
  display: grid;
  gap: 0;
  font-size: 0.9rem;
}

.specs > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--dark-line);
}

.specs > div:last-child {
  border-bottom: 0;
}

.specs dt {
  color: var(--dark-muted);
}

.specs dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: #fff;
  text-align: right;
}

/* --- Аккордеон --- */
.accordion {
  display: grid;
  gap: 0.75rem;
}

.acc {
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.acc.is-open {
  border-color: var(--navy-200);
  box-shadow: var(--shadow-sm);
}

.acc__btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.1rem 1.3rem;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  transition: color 0.2s var(--ease);
}

.acc__btn:hover {
  color: var(--navy-700);
}

.acc__sign {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--navy-50);
  transition: background-color 0.25s var(--ease), transform 0.3s var(--ease);
}

.acc__sign::before,
.acc__sign::after {
  content: '';
  position: absolute;
  inset: 50% 7px auto 7px;
  height: 2px;
  border-radius: 2px;
  background: var(--navy-700);
  transform: translateY(-50%);
  transition: transform 0.3s var(--ease), background-color 0.25s var(--ease);
}

.acc__sign::after {
  transform: translateY(-50%) rotate(90deg);
}

.acc.is-open .acc__sign {
  background: var(--orange);
}

.acc.is-open .acc__sign::before,
.acc.is-open .acc__sign::after {
  background: var(--navy-950);
}

.acc.is-open .acc__sign::after {
  transform: translateY(-50%) rotate(0deg);
}

.acc__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s var(--ease);
}

.acc.is-open .acc__body {
  grid-template-rows: 1fr;
}

.acc__body > div {
  overflow: hidden;
}

.acc__body p {
  padding: 0 1.3rem 1.25rem;
  font-size: 0.95rem;
}

/* --- Шаги процесса --- */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  gap: clamp(1rem, 0.7rem + 1vw, 1.5rem);
  counter-reset: step;
}

.step {
  position: relative;
  padding-top: 2.4rem;
}

.step::before {
  counter-increment: step;
  content: '0' counter(step);
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--orange-600);
  letter-spacing: 0.08em;
}

.step::after {
  content: '';
  position: absolute;
  top: 1.85rem;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--orange) 0 22px, var(--line) 22px);
}

.step h3 {
  margin: 1rem 0 0.5rem;
  font-size: 1.06rem;
}

.step p {
  font-size: 0.93rem;
}

/* --- Схема архитектуры --- */
.stackflow {
  display: grid;
  gap: 0.9rem;
}

.layer {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.1rem;
  align-items: start;
  padding: 1.15rem 1.3rem;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--dark-line);
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.layer:hover {
  transform: translateX(4px);
  border-color: rgba(238, 122, 55, 0.5);
  background: rgba(255, 255, 255, 0.07);
}

.layer__badge {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(140deg, rgba(238, 122, 55, 0.22), rgba(238, 122, 55, 0.06));
  border: 1px solid rgba(238, 122, 55, 0.32);
  color: var(--orange-300);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
}

.layer__name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.3rem;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: #fff;
}

.layer__desc {
  font-size: 0.92rem;
  color: var(--dark-muted);
}

.layer__arrow {
  display: grid;
  place-items: center;
  height: 22px;
  color: rgba(157, 185, 214, 0.45);
}

.layer__arrow svg {
  width: 18px;
  height: 18px;
}

/* --- Таблица --- */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  font-size: 0.93rem;
}

thead th {
  padding: 1rem 1.15rem;
  text-align: left;
  background: var(--navy-50);
  border-bottom: 1px solid var(--navy-100);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--navy-800);
  white-space: nowrap;
}

tbody td {
  padding: 1rem 1.15rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover {
  background: var(--surface-alt);
}

.td-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}

.td-head svg {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--orange-600);
}

.td-effect {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-xs);
  background: var(--orange-50);
  border: 1px solid var(--orange-200);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--orange-700);
}

/* --- Кейсы --- */
.case {
  display: grid;
  gap: 0.85rem;
  padding: clamp(1.35rem, 1.1rem + 0.8vw, 1.9rem);
  border-radius: var(--radius-xs);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
    border-color 0.28s var(--ease);
}

.case:hover {
  transform: translateY(-4px);
  border-color: var(--navy-200);
  box-shadow: var(--shadow-lg);
}

.case__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.case__client {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.case__top .ico {
  color: var(--orange-600);
}

.case h3 {
  font-size: 1.12rem;
}

.case__text {
  font-size: 0.94rem;
}

/* ==========================================================================
   6. Шапка и навигация
   ========================================================================== */

.header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: background-color 0.3s var(--ease), box-shadow 0.3s var(--ease),
    border-color 0.3s var(--ease);
  border-bottom: 1px solid transparent;
}

.header::before {
  content: '';
  position: absolute;
  inset: 0;
  /* background: linear-gradient(180deg, rgba(6, 19, 35, 0.85), rgba(6, 19, 35, 0)); */
  opacity: 1;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}

.header.is-stuck {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom-color: var(--line);
  box-shadow: 0 4px 24px rgba(9, 30, 56, 0.07);
}

.header.is-stuck::before {
  opacity: 0;
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  flex: none;
  margin-right: auto;
}

.brand__logo {
  height: 27px;
  width: auto;
}

.brand__logo path {
  transition: fill 0.3s var(--ease);
}

/* Над тёмным hero делаем надпись и половину эмблемы светлыми */
.header:not(.is-stuck) .brand__logo {
  --logo-mark: #ffffff;
  --logo-text: #ffffff;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  position: relative;
  padding: 0.5rem 0.7rem;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(232, 240, 248, 0.82);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0.7rem;
  right: 0.7rem;
  bottom: 0.25rem;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

.nav__link:hover,
.nav__link.is-active {
  color: #fff;
}

.nav__link.is-active::after {
  transform: scaleX(1);
}

.header.is-stuck .nav__link {
  color: var(--body);
}

.header.is-stuck .nav__link:hover,
.header.is-stuck .nav__link.is-active {
  color: var(--navy-800);
}

.header__cta {
  flex: none;
}

.burger {
  display: none;
  flex: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(232, 240, 248, 0.25);
  place-items: center;
}

.burger span {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform 0.28s var(--ease), background-color 0.2s var(--ease);
}

.burger span::before,
.burger span::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: inherit;
  transition: transform 0.28s var(--ease), opacity 0.2s var(--ease);
}

.burger span::before {
  top: -6px;
}

.burger span::after {
  top: 6px;
}

.header.is-stuck .burger {
  border-color: var(--line);
}

.header.is-stuck .burger span {
  background: var(--navy-800);
}

body.is-menu-open .burger span {
  transform: rotate(45deg);
}

body.is-menu-open .burger span::before {
  transform: translateY(6px) rotate(-90deg);
}

body.is-menu-open .burger span::after {
  opacity: 0;
}

/* ==========================================================================
   7. Hero
   ========================================================================== */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: min(100svh, 900px);
  padding-block: calc(var(--header-h) + clamp(2.5rem, 2rem + 4vw, 5rem))
    clamp(2.5rem, 2rem + 3vw, 4.5rem);
  background: radial-gradient(ellipse 120% 90% at 82% 8%, #17416f 0%, transparent 55%),
    radial-gradient(ellipse 90% 70% at 0% 100%, rgba(238, 122, 55, 0.22) 0%, transparent 55%),
    linear-gradient(165deg, var(--navy-900) 0%, var(--navy-950) 100%);
  color: var(--dark-muted);
  overflow: hidden;
}

/* Косые «сигналы» под 45° — тот же наклон, что у диагонали эмблемы.
   Каждый штрих — отдельный элемент со своей длиной, яркостью, скоростью
   и стартовой фазой (инлайн-переменные в разметке), поэтому они идут
   вразнобой, а не синхронными группами. */
.hero__rain {
  position: absolute;
  inset: 0;
  overflow: hidden;
  -webkit-mask-image: radial-gradient(ellipse 100% 95% at 36% 42%, #000 26%, transparent 86%);
  mask-image: radial-gradient(ellipse 100% 95% at 36% 42%, #000 26%, transparent 86%);
  pointer-events: none;
}

.hero__rain i {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: var(--w);
  height: var(--len);
  /* Яркая голова вверху: после поворота это верхний правый конец —
     ведущая сторона, хвост тянется назад вниз-влево */
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 1) 8%,
    rgba(255, 255, 255, 0.55) 45%,
    rgba(255, 255, 255, 0) 100%
  );
  opacity: 0;
  animation: signal-drift var(--dur) linear var(--delay) infinite;
}

@media (max-width: 640px) {
  /* Экран втрое уже, а сигналов столько же — оставляем 3 из 5.
     Порядок элементов перемешан, поэтому выборка получается равномерной */
  .hero__rain i:nth-child(5n + 1),
  .hero__rain i:nth-child(5n + 2) {
    display: none;
  }
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: clamp(2rem, 1.5rem + 3vw, 4rem);
  align-items: center;
  width: 100%;
}

.hero h1 {
  color: #fff;
}

.hero h1 .grad {
  background: linear-gradient(100deg, var(--orange-300) 0%, var(--orange) 60%, var(--orange-600) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__lead {
  max-width: 56ch;
  margin-top: 1.4rem;
  font-size: clamp(1.02rem, 0.97rem + 0.3vw, 1.2rem);
  color: var(--dark-muted);
}

.hero__btns {
  margin-top: 2.1rem;
}

.hero__marks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin-top: 2.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--dark-line);
}

.hero__mark {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.87rem;
  color: var(--navy-200);
}

.hero__mark svg {
  flex: none;
  width: 17px;
  height: 17px;
  color: var(--orange);
}

/* Визуализация сигнала */
.viz {
  position: relative;
  padding: 1.35rem;
  border-radius: var(--radius-xs);
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--dark-line);
  backdrop-filter: blur(8px);
  box-shadow: 0 30px 70px rgba(2, 10, 20, 0.5);
}

.viz__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--navy-300);
}

.viz__dot {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--orange-300);
}

.viz__dot::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 0 rgba(238, 122, 55, 0.6);
  animation: pulse-dot 2.2s infinite;
}

.viz__wave {
  position: relative;
  height: clamp(120px, 18vw, 168px);
  border-radius: var(--radius-xs);
  background: rgba(6, 19, 35, 0.45);
  border: 1px solid var(--dark-line);
  overflow: hidden;
}

.viz__wave svg {
  /* Две копии периода подряд: сдвиг на 50% ширины = ровно один период,
     поэтому волна идёт непрерывно. max-width снимает ограничение из сброса,
     иначе SVG сожмётся до 100% и правая половина уедет в пустоту. */
  width: 200%;
  max-width: none;
  height: 100%;
  animation: wave-slide 9s linear infinite;
}

.viz__wave::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 19, 35, 0.7) 0%, transparent 12%, transparent 88%, rgba(6, 19, 35, 0.7) 100%);
  pointer-events: none;
}

.viz__spectrum {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: clamp(64px, 9vw, 88px);
  margin-top: 0.9rem;
  padding: 0.7rem 0.8rem 0;
  border-radius: var(--radius-xs);
  background: rgba(6, 19, 35, 0.45);
  border: 1px solid var(--dark-line);
}

.viz__spectrum i {
  flex: 1;
  min-width: 3px;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, var(--orange) 0%, rgba(238, 122, 55, 0.25) 100%);
  transform-origin: bottom;
  animation: bar-dance 1.6s ease-in-out infinite alternate;
}

.viz__foot {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.viz__stat {
  padding: 0.6rem 0.7rem;
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--dark-line);
  text-align: center;
}

.viz__stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: #fff;
}

.viz__stat span {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--navy-300);
}

.viz__alert {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
  padding: 0.7rem 0.85rem;
  border-radius: 12px;
  background: rgba(238, 122, 55, 0.13);
  border: 1px solid rgba(238, 122, 55, 0.32);
  font-size: 0.82rem;
  color: #fff;
}

.viz__alert svg {
  flex: none;
  width: 18px;
  height: 18px;
  color: var(--orange);
}

/* ==========================================================================
   8. Секции
   ========================================================================== */

/* Логотип-подпись «о компании» */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  gap: clamp(1.75rem, 1.25rem + 2.5vw, 3.5rem);
  align-items: center;
}

.about__mark {
  position: relative;
  display: grid;
  place-items: center;
  padding: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  border-radius: var(--radius-xs);
  background: linear-gradient(150deg, var(--navy-50), #fff 60%);
  border: 1px solid var(--navy-100);
  overflow: hidden;
}

.about__mark::before {
  content: '';
  position: absolute;
  width: 320px;
  height: 320px;
  right: -120px;
  bottom: -140px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(238, 122, 55, 0.16), transparent 65%);
}

.about__mark img {
  position: relative;
  width: min(100%, 240px);
}

.about__mark figcaption {
  position: relative;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--muted);
}

/* Карточки датчиков */
.sensor {
  display: grid;
  gap: 0.7rem;
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius-xs);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease),
    box-shadow 0.25s var(--ease);
}

.sensor:hover {
  transform: translateY(-3px);
  border-color: var(--orange-200);
  box-shadow: var(--shadow);
}

.sensor__top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sensor__top svg {
  flex: none;
  width: 22px;
  height: 22px;
  color: var(--orange-600);
}

.sensor__top h4 {
  font-size: 0.99rem;
}

.sensor__text {
  font-size: 0.9rem;
}

.sensor__meta {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--navy-600);
  padding-top: 0.55rem;
  border-top: 1px dashed var(--line);
}

/* Отрасли */
.industry {
  position: relative;
  display: grid;
  gap: 0.8rem;
  padding: 1.4rem 1.5rem;
  border-radius: var(--radius-xs);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease),
    border-color 0.28s var(--ease);
}

.industry:hover {
  transform: translateY(-4px);
  border-color: var(--navy-200);
  box-shadow: var(--shadow-lg);
}

.industry__head {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.industry__head svg {
  flex: none;
  width: 24px;
  height: 24px;
  color: var(--orange-600);
}

.industry__head h3 {
  font-size: 1.08rem;
}

/* Баннер CTA */
.cta-band {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(1.25rem, 1rem + 2vw, 3rem);
  align-items: center;
  padding: clamp(1.75rem, 1.4rem + 2vw, 3rem);
  border-radius: var(--radius-xl);
  background: radial-gradient(ellipse 90% 130% at 100% 0%, #17416f 0%, transparent 60%),
    linear-gradient(140deg, var(--navy-900), var(--navy-950));
  border: 1px solid rgba(157, 185, 214, 0.16);
  overflow: hidden;
}

.cta-band::after {
  content: '';
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(238, 122, 55, 0.22), transparent 62%);
  pointer-events: none;
}

.cta-band h2 {
  color: #fff;
  font-size: clamp(1.45rem, 1.15rem + 1.4vw, 2.15rem);
}

.cta-band p {
  margin-top: 0.8rem;
  max-width: 58ch;
  color: var(--dark-muted);
}

.cta-band__actions {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.75rem;
}

/* ==========================================================================
   9. Контакты и футер
   ========================================================================== */

.contacts {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(1.5rem, 1.2rem + 2vw, 3rem);
  align-items: start;
}

.contact-list {
  display: grid;
  gap: 0.9rem;
}

.contact-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  align-items: start;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-xs);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.contact-item:hover {
  border-color: var(--navy-200);
  box-shadow: var(--shadow-sm);
}

.contact-item__icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--navy-50);
  color: var(--navy-700);
}

.contact-item__icon svg {
  width: 20px;
  height: 20px;
}

.contact-item__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-item__value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}

a.contact-item__value:hover {
  color: var(--orange-600);
}

.contact-item__value.is-placeholder {
  color: var(--muted);
  font-weight: 600;
  background: repeating-linear-gradient(
    -45deg,
    var(--navy-50) 0 8px,
    transparent 8px 16px
  );
  border-radius: 5px;
  padding-inline: 4px;
}

/* Telegram + QR */
.tg-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.25rem;
  align-items: center;
  margin-top: 0.35rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, var(--navy-900), var(--navy-950));
  border: 1px solid rgba(157, 185, 214, 0.18);
  color: var(--dark-muted);
}

.tg-card__qr {
  flex: none;
  width: 118px;
  height: 118px;
  padding: 7px;
  border-radius: 14px;
  background: #fff;
}

.tg-card__qr img {
  width: 100%;
  height: 100%;
}

.tg-card h3 {
  color: #fff;
  font-size: 1.08rem;
  margin-bottom: 0.4rem;
}

.tg-card p {
  font-size: 0.88rem;
  margin-bottom: 0.9rem;
}

/* Форма */
.form {
  padding: clamp(1.4rem, 1.1rem + 1.2vw, 2.15rem);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.form__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--navy-800);
}

.field label span {
  color: var(--orange-600);
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.78rem 1rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--line);
  background: var(--surface-alt);
  font-size: 0.95rem;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #9fb0c3;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(238, 122, 55, 0.13);
}

.field input:user-invalid,
.field textarea:user-invalid {
  border-color: #d9534f;
}

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1.4rem;
}

.form__note {
  flex: 1 1 220px;
  font-size: 0.79rem;
  color: var(--muted);
}

.form__status {
  margin-top: 1rem;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--orange-50);
  border: 1px solid var(--orange-200);
  font-size: 0.87rem;
  color: var(--orange-700);
}

.form__status[hidden] {
  display: none;
}

/* Реквизиты */
.legal {
  margin-top: 1.5rem;
  padding: 1.1rem 1.25rem;
  border-radius: var(--radius-xs);
  background: var(--surface-alt);
  border: 1px dashed var(--navy-200);
}

.legal h4 {
  margin-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.legal dl {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  font-size: 0.88rem;
}

.legal dl > div {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.8rem;
  justify-content: space-between;
}

.legal dt {
  color: var(--muted);
}

.legal dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.83rem;
  color: var(--navy-700);
}

/* Футер */
.footer {
  padding-block: clamp(2.5rem, 2rem + 2vw, 4rem) 1.75rem;
  background: var(--navy-950);
  color: var(--dark-muted);
  font-size: 0.9rem;
}

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(auto-fit, minmax(min(100%, 160px), 1fr));
  gap: clamp(1.75rem, 1.4rem + 2vw, 3rem);
  padding-bottom: 2.25rem;
  border-bottom: 1px solid var(--dark-line);
}

.footer__logo {
  height: 46px;
  width: auto;
  --logo-mark: #ffffff;
  --logo-text: #ffffff;
}

.footer__brand p {
  max-width: 38ch;
  margin-top: 1.1rem;
  font-size: 0.89rem;
}

.footer h4 {
  margin-bottom: 0.9rem;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer ul {
  display: grid;
  gap: 0.55rem;
}

.footer a {
  color: var(--dark-muted);
}

.footer a:hover {
  color: var(--orange-300);
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  justify-content: space-between;
  padding-top: 1.5rem;
  font-size: 0.82rem;
  color: #7a8fa5;
}

.to-top {
  position: fixed;
  right: clamp(1rem, 2vw, 2rem);
  bottom: clamp(1rem, 2vw, 2rem);
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease),
    visibility 0.25s var(--ease), background-color 0.2s var(--ease);
}

.to-top svg {
  width: 20px;
  height: 20px;
}

.to-top:hover {
  background: var(--orange);
  color: #fff;
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ==========================================================================
   10. Анимации и адаптив
   ========================================================================== */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* rotate идёт первым, поэтому translateY смещает штрих вдоль его же оси.
   Отрицательное направление = вверх-вправо под 45°.
   Плавное появление и угасание прячут точку рестарта. */
@keyframes signal-drift {
  0% {
    transform: rotate(45deg) translateY(calc(var(--travel) * 0.5));
    opacity: 0;
  }

  18%,
  72% {
    opacity: var(--op);
  }

  100% {
    transform: rotate(45deg) translateY(calc(var(--travel) * -0.5));
    opacity: 0;
  }
}

@keyframes wave-slide {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@keyframes bar-dance {
  from {
    transform: scaleY(0.18);
  }
  to {
    transform: scaleY(1);
  }
}

@keyframes pulse-dot {
  0% {
    box-shadow: 0 0 0 0 rgba(238, 122, 55, 0.55);
  }
  70% {
    box-shadow: 0 0 0 9px rgba(238, 122, 55, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(238, 122, 55, 0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Без JS контент обязан оставаться видимым */
.no-js .reveal {
  opacity: 1;
  transform: none;
}

/* Мобильное меню */
@media (max-width: 1023px) {
  .burger {
    display: grid;
  }

  .header__cta {
    display: none;
  }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem var(--gutter) 1.75rem;
    background: rgba(6, 19, 35, 0.97);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--dark-line);
    max-height: calc(100svh - var(--header-h));
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease),
      visibility 0.25s var(--ease);
  }

  body.is-menu-open .nav {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__link {
    padding: 0.9rem 0.25rem;
    border-radius: 0;
    border-bottom: 1px solid var(--dark-line);
    font-size: 1rem;
    color: rgba(232, 240, 248, 0.9);
  }

  .header.is-stuck .nav__link {
    color: rgba(232, 240, 248, 0.9);
  }

  .header.is-stuck .nav__link:hover,
  .header.is-stuck .nav__link.is-active {
    color: #fff;
  }

  .nav__link::after {
    display: none;
  }

  .nav .btn {
    margin-top: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .nav .btn {
    display: none;
  }
}

@media (max-width: 979px) {
  .hero__inner,
  .about,
  .contacts,
  .panel-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    min-height: 0;
  }

  .about__mark {
    order: -1;
  }

  .cta-band {
    grid-template-columns: minmax(0, 1fr);
  }

  .step::after {
    background: linear-gradient(90deg, var(--orange) 0 22px, var(--line) 22px 100%);
  }
}

@media (max-width: 600px) {
  :root {
    --header-h: 66px;
  }

  .brand__logo {
    height: 23px;
  }

  .btn {
    padding: 0.8rem 1.35rem;
  }

  .hero__btns .btn {
    flex: 1 1 100%;
  }

  .tg-card,
  .contact-item {
    grid-template-columns: minmax(0, 1fr);
  }

  .tg-card__qr {
    width: 132px;
    height: 132px;
  }

  .viz__stat {
    padding: 0.55rem 0.35rem;
  }

  .viz__stat span {
    font-size: 0.62rem;
    letter-spacing: 0;
  }

  .footer__top {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .viz__wave svg {
    animation: none;
  }

  /* Без анимации штрихи остались бы невидимыми (opacity: 0) */
  .hero__rain i {
    animation: none;
    opacity: var(--op);
    transform: rotate(45deg);
  }
}

@media print {
  .header,
  .to-top,
  .hero__rain,
  .viz {
    display: none;
  }

  body {
    color: #000;
  }
}