/* ============================================
   MLH MODULAIRES — Компоненты
   ============================================ */

/* ============================================
   ПАНЕЛЬ НАВИГАЦИИ (NAVBAR)
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: all 0.4s var(--ease);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar.scrolled {
  background: rgba(8, 12, 20, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-lt);
  box-shadow: 0 4px 40px rgba(0, 0, 0, 0.4);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--s3);
  text-decoration: none;
}

.navbar__logo-img {
  height: 44px;
  width: auto;
  filter: brightness(0) invert(1);
}

.navbar__marque {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.navbar__marque-nom {
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.navbar__marque-slogan {
  font-size: 0.62rem;
  color: var(--text-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 2px;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--s1);
}

.navbar__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  padding: var(--s2) var(--s4);
  border-radius: var(--r-md);
  transition: all var(--t);
  position: relative;
  letter-spacing: 0.02em;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--blue);
  border-radius: var(--r-full);
  transition: width var(--t);
}

.navbar__link:hover {
  color: var(--text-1);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 70%;
}

.navbar__link.active {
  color: var(--text-1);
}

.navbar__right {
  display: flex;
  align-items: center;
  gap: var(--s4);
}

/* Переключатель языка */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border-lt);
  border-radius: var(--r-full);
  overflow: hidden;
}

.lang-btn {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.75rem;
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--t);
  background: none;
  border: none;
  font-family: var(--font);
}

.lang-btn.active {
  background: var(--blue);
  color: white;
  border-radius: var(--r-full);
}

.lang-btn:not(.active):hover {
  color: var(--text-1);
}

/* Кнопка гамбургер */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--s2);
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-1);
  border-radius: 2px;
  transition: all 0.3s var(--ease);
}

.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Мобильное меню */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: rgba(8, 12, 20, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-lt);
  padding: var(--s6) var(--s8);
  z-index: 999;
  flex-direction: column;
  gap: var(--s2);
}

.mobile-menu.open { display: flex; }

.mobile-menu__link {
  padding: var(--s4);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-2);
  border-radius: var(--r-md);
  transition: all var(--t);
  border-bottom: 1px solid var(--border-lt);
}

.mobile-menu__link:hover {
  color: var(--text-1);
  background: var(--surface);
}

.mobile-menu__cta {
  margin-top: var(--s4);
}

/* ============================================
   ГЛАВНЫЙ ЭКРАН (HERO)
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
}

.hero__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.25;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(8, 12, 20, 0.92) 0%,
    rgba(8, 12, 20, 0.7) 40%,
    rgba(8, 12, 20, 0.85) 100%
  );
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 150, 220, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 150, 220, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero__glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 150, 220, 0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  pointer-events: none;
}

.hero__glow-2 {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 150, 220, 0.08) 0%, transparent 70%);
  bottom: -50px;
  left: 15%;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}

.hero__title {
  font-size: clamp(2.8rem, 7vw, 6.5rem);
  font-weight: 900;
  line-height: 0.97;
  letter-spacing: -0.035em;
  margin-bottom: var(--s6);
}

.hero__title .line-blue {
  color: var(--blue);
  display: block;
}

.hero__subtitle {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--text-2);
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: var(--s10);
}

.hero__cta-group {
  display: flex;
  gap: var(--s4);
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--s8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s2);
  color: var(--text-3);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 2;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--blue), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50%       { opacity: 1;   transform: scaleY(1.2); }
}

/* ============================================
   ПАНЕЛЬ СТАТИСТИКИ
   ============================================ */

.stats-bar {
  background: var(--graphite);
  border-top: 1px solid var(--border-lt);
  border-bottom: 1px solid var(--border-lt);
  padding-block: var(--s10);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.stat-item {
  text-align: center;
  padding: var(--s6) var(--s4);
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border-lt);
}

.stat-item__num {
  font-size: clamp(2.4rem, 4vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--blue);
  display: block;
}

.stat-item__label {
  font-size: 0.85rem;
  color: var(--text-2);
  margin-top: var(--s2);
  font-weight: 500;
  line-height: 1.4;
}

/* ============================================
   АНАТОМИЯ СТЕНЫ
   ============================================ */

.anatomy {
  background: var(--dark);
  overflow: hidden;
}

.anatomy__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s16);
  align-items: center;
}

.anatomy__svg-wrap {
  position: relative;
}

.anatomy__svg {
  width: 100%;
  max-width: 520px;
  height: auto;
  display: block;
  margin: auto;
}

.wall-layer {
  cursor: pointer;
  transition: all 0.3s var(--ease);
}

.wall-layer:hover rect,
.wall-layer:hover path,
.wall-layer:hover polygon {
  filter: brightness(1.3);
}

/* Подсказка */
.anatomy__tooltip {
  position: absolute;
  background: var(--graphite);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--s4) var(--s6);
  min-width: 220px;
  max-width: 280px;
  pointer-events: none;
  z-index: 10;
  display: none;
  box-shadow: var(--sh-card), var(--sh-blue);
}

.anatomy__tooltip.visible {
  display: block;
  animation: fadeInUp 0.25s var(--ease) both;
}

.anatomy__tooltip-name {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: var(--s1);
}

.anatomy__tooltip-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: var(--s2);
}

.anatomy__tooltip-spec {
  font-size: 0.85rem;
  color: var(--text-2);
  line-height: 1.5;
}

.anatomy__tooltip-value {
  display: inline-block;
  margin-top: var(--s2);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue-lt);
  background: var(--blue-glow);
  padding: 2px 8px;
  border-radius: var(--r-full);
}

/* Легенда слоев */
.anatomy__legend {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  margin-top: var(--s8);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--s3);
  padding: var(--s3) var(--s4);
  border-radius: var(--r-md);
  cursor: pointer;
  transition: all var(--t);
  border: 1px solid transparent;
}

.legend-item:hover,
.legend-item.active {
  background: var(--blue-glow);
  border-color: var(--border);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  flex-shrink: 0;
}

.legend-name {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-2);
}

.legend-item:hover .legend-name,
.legend-item.active .legend-name {
  color: var(--text-1);
}

/* ============================================
   ВРЕМЕННАЯ ШКАЛА ПРОЦЕССА
   ============================================ */

.process-timeline {
  position: relative;
  padding-top: var(--s4);
}

.process-step {
  display: flex;
  gap: var(--s8);
  align-items: flex-start;
  margin-bottom: var(--s12);
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 27px;
  top: 56px;
  bottom: calc(-1 * var(--s12));
  width: 2px;
  background: linear-gradient(to bottom, var(--blue), var(--border-lt));
}

.process-step__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--r-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--t);
  position: relative;
  z-index: 1;
}

.process-step__icon svg {
  width: 24px;
  height: 24px;
  color: var(--blue);
}

.process-step__num {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 20px;
  height: 20px;
  background: var(--blue);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 800;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

.process-step__content {
  flex: 1;
  padding-top: var(--s3);
}

.process-step__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--s2);
  color: var(--text-1);
}

.process-step__desc {
  font-size: 0.92rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* ============================================
   КАРТОЧКИ ПРОЕКТОВ (Портфолио)
   ============================================ */

.project-card {
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--graphite);
  border: 1px solid var(--border-lt);
  display: flex;
  flex-direction: column;
  transition: all 0.4s var(--ease);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--border);
  box-shadow: var(--sh-elevated);
}

.project-card__img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.project-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.project-card:hover .project-card__img { transform: scale(1.06); }

.project-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(8, 12, 20, 0.7) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  display: flex;
  align-items: flex-end;
  padding: var(--s6);
}

.project-card:hover .project-card__overlay { opacity: 1; }

.project-card__overlay-btn {
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
  border: 1.5px solid rgba(255,255,255,0.5);
  padding: 0.5rem 1.25rem;
  border-radius: var(--r-full);
  backdrop-filter: blur(4px);
  transition: all var(--t);
}

.project-card__overlay-btn:hover {
  background: white;
  color: var(--graphite);
}

.project-card__body {
  padding: var(--s6);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card__tag {
  margin-bottom: var(--s4);
}

.project-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--s3);
  color: var(--text-1);
}

.project-card__meta {
  display: flex;
  gap: var(--s4);
  margin-top: auto;
  padding-top: var(--s4);
  border-top: 1px solid var(--border-lt);
}

.project-card__meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--s1);
}

.project-card__meta-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
  font-weight: 600;
}

.project-card__meta-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-1);
}

/* Кнопки фильтрации */
.filter-group {
  display: flex;
  gap: var(--s2);
  flex-wrap: wrap;
  margin-bottom: var(--s12);
}

.filter-btn {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: var(--r-full);
  border: 1.5px solid var(--border-lt);
  color: var(--text-2);
  cursor: pointer;
  transition: all var(--t);
  background: none;
  font-family: var(--font);
}

.filter-btn:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.filter-btn.active {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}

/* ============================================
   КАЛЬКУЛЯТОР
   ============================================ */

.calculator-wrap {
  max-width: 720px;
  margin-inline: auto;
}

.calc-header {
  text-align: center;
  margin-bottom: var(--s10);
}

.calc-progress {
  display: flex;
  align-items: center;
  gap: var(--s2);
  margin-bottom: var(--s10);
  max-width: 480px;
  margin-inline: auto;
}

.calc-progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s2);
  flex: 1;
  position: relative;
}

.calc-progress-step:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 16px;
  left: calc(50% + 16px);
  right: calc(-50% + 16px);
  height: 2px;
  background: var(--border-lt);
  transition: background 0.4s;
}

.calc-progress-step.done::after,
.calc-progress-step.active::after {
  background: var(--blue);
}

.calc-progress-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-3);
  transition: all 0.4s;
  z-index: 1;
}

.calc-progress-step.done .calc-progress-dot {
  background: var(--blue);
  border-color: var(--blue);
  color: white;
}

.calc-progress-step.active .calc-progress-dot {
  background: var(--blue-glow);
  border-color: var(--blue);
  color: var(--blue);
  box-shadow: 0 0 0 4px var(--blue-glow);
}

.calc-progress-label {
  font-size: 0.7rem;
  color: var(--text-3);
  font-weight: 500;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.calc-progress-step.active .calc-progress-label { color: var(--blue); }
.calc-progress-step.done .calc-progress-label   { color: var(--text-2); }

/* Контейнер шага */
.calc-step-container {
  background: var(--card-bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--r-xl);
  padding: var(--s10);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  min-height: 320px;
}

.calc-step { display: none; }
.calc-step.active { display: block; animation: fadeIn 0.4s var(--ease) both; }

.calc-step__title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: var(--s2);
  color: var(--text-1);
}

.calc-step__subtitle {
  font-size: 0.95rem;
  color: var(--text-2);
  margin-bottom: var(--s8);
}

/* Сетка вариантов */
.calc-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s4);
  margin-bottom: var(--s8);
}

.calc-option {
  padding: var(--s6) var(--s4);
  border: 2px solid var(--border-lt);
  border-radius: var(--r-lg);
  cursor: pointer;
  text-align: center;
  transition: all 0.25s var(--ease);
  background: var(--surface);
}

.calc-option:hover {
  border-color: var(--blue);
  transform: translateY(-3px);
}

.calc-option.selected {
  border-color: var(--blue);
  background: var(--blue-glow);
}

.calc-option__icon {
  width: 48px;
  height: 48px;
  margin-inline: auto;
  margin-bottom: var(--s3);
  color: var(--blue);
}

.calc-option__icon svg {
  width: 100%;
  height: 100%;
}

.calc-option__label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-1);
  margin-bottom: var(--s1);
}

.calc-option__desc {
  font-size: 0.78rem;
  color: var(--text-3);
}

.calc-option.selected .calc-option__desc { color: var(--text-2); }

/* Ползунок */
.calc-slider-wrap {
  margin-bottom: var(--s8);
}

.calc-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--s4);
}

.calc-slider-val {
  font-size: 2rem;
  font-weight: 900;
  color: var(--blue);
  letter-spacing: -0.04em;
}

.calc-slider-unit {
  font-size: 1rem;
  color: var(--text-2);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--surface-lt);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  background: linear-gradient(to right, var(--blue) 0%, var(--blue) var(--pct, 30%), var(--surface-lt) var(--pct, 30%));
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--blue);
  cursor: pointer;
  box-shadow: 0 0 0 4px var(--blue-glow);
  transition: box-shadow var(--t);
}

input[type="range"]::-webkit-slider-thumb:hover {
  box-shadow: 0 0 0 8px var(--blue-glow);
}

/* Варианты отделки */
.calc-finish-options {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  margin-bottom: var(--s8);
}

.calc-finish-option {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: var(--s5) var(--s6);
  border: 2px solid var(--border-lt);
  border-radius: var(--r-lg);
  cursor: pointer;
  transition: all 0.25s var(--ease);
  background: var(--surface);
}

.calc-finish-option:hover {
  border-color: var(--blue);
}

.calc-finish-option.selected {
  border-color: var(--blue);
  background: var(--blue-glow);
}

.calc-finish-option__radio {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.25s;
}

.calc-finish-option.selected .calc-finish-option__radio {
  border-color: var(--blue);
  background: var(--blue);
}

.calc-finish-option.selected .calc-finish-option__radio::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: white;
}

.calc-finish-option__info {
  flex: 1;
}

.calc-finish-option__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-1);
}

.calc-finish-option__desc {
  font-size: 0.82rem;
  color: var(--text-2);
  margin-top: 2px;
}

.calc-finish-option__tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--r-full);
  background: var(--blue-glow);
  color: var(--blue-lt);
  border: 1px solid var(--border);
  white-space: nowrap;
}

/* Контактная форма в калькуляторе */
.calc-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s4);
  margin-bottom: var(--s6);
}

/* Навигационные кнопки */
.calc-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--s6);
}

/* Успех */
.calc-success {
  display: none;
  text-align: center;
  padding: var(--s12);
}

.calc-success.visible { display: block; animation: fadeInUp 0.6s var(--ease) both; }

.calc-success__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--blue-glow);
  border: 2px solid var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-bottom: var(--s6);
}

/* ============================================
   РАЗДЕЛ B2B
   ============================================ */

.b2b-feature {
  display: flex;
  gap: var(--s4);
  align-items: flex-start;
}

.b2b-feature__icon {
  width: 42px;
  height: 42px;
  border-radius: var(--r-md);
  background: var(--blue-glow);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.b2b-feature__icon svg { width: 20px; height: 20px; color: var(--blue); }

.b2b-feature__content h4 {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: var(--s1);
  color: var(--text-1);
}

.b2b-feature__content p {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.6;
}

/* Скачиваемые элементы */
.download-item {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding: var(--s5) var(--s6);
  border: 1px solid var(--border-lt);
  border-radius: var(--r-lg);
  transition: all var(--t);
  background: var(--surface);
}

.download-item:hover {
  border-color: var(--border);
  background: var(--blue-glow);
  transform: translateX(4px);
}

.download-item__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  background: var(--blue-glow);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--blue);
}

.download-item__name {
  flex: 1;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-1);
}

.download-item__size {
  font-size: 0.78rem;
  color: var(--text-3);
}

/* ============================================
   БАННЕР ПРИЗЫВА К ДЕЙСТВИЮ (CTA)
   ============================================ */

.cta-banner {
  background: linear-gradient(135deg, var(--graphite) 0%, var(--graph-mid) 100%);
  border-top: 1px solid var(--border-lt);
  border-bottom: 1px solid var(--border-lt);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--blue), transparent);
}

.cta-banner::after {
  content: '';
  position: absolute;
  right: -10%;
  top: -50%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 150, 220, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

/* ============================================
   ПОДВАЛ СТРАНИЦЫ (FOOTER)
   ============================================ */

.footer {
  background: var(--dark);
  border-top: 1px solid var(--border-lt);
  padding-top: var(--s16);
  padding-bottom: var(--s8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--s12);
  margin-bottom: var(--s12);
}

.footer__logo img {
  height: 38px;
  filter: brightness(0) invert(1);
  margin-bottom: var(--s4);
}

.footer__tagline {
  font-size: 0.9rem;
  color: var(--text-2);
  line-height: 1.65;
  max-width: 280px;
  margin-bottom: var(--s6);
}

.footer__col-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
  margin-bottom: var(--s5);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}

.footer__link {
  font-size: 0.9rem;
  color: var(--text-3);
  transition: color var(--t);
}

.footer__link:hover { color: var(--blue); }

.footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--s3);
  font-size: 0.875rem;
  color: var(--text-3);
  margin-bottom: var(--s3);
  line-height: 1.5;
}

.footer__contact-item svg {
  width: 16px;
  height: 16px;
  color: var(--blue);
  margin-top: 2px;
  flex-shrink: 0;
}

.footer__bottom {
  border-top: 1px solid var(--border-lt);
  padding-top: var(--s6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s4);
}

.footer__copyright {
  font-size: 0.82rem;
  color: var(--text-3);
}

.footer__bottom-links {
  display: flex;
  gap: var(--s6);
}

.footer__bottom-link {
  font-size: 0.82rem;
  color: var(--text-3);
  transition: color var(--t);
}

.footer__bottom-link:hover { color: var(--text-2); }

/* ============================================
   ОТЗЫВЫ
   ============================================ */

.testimonial-card {
  background: var(--card-bg);
  border: 1px solid var(--border-lt);
  border-radius: var(--r-xl);
  padding: var(--s8);
  position: relative;
  backdrop-filter: blur(10px);
  transition: all var(--t);
}

.testimonial-card:hover {
  border-color: var(--border);
  transform: translateY(-4px);
  box-shadow: var(--sh-card);
}

.testimonial-card__quote {
  font-size: 2.5rem;
  color: var(--blue);
  line-height: 1;
  font-weight: 900;
  margin-bottom: var(--s4);
  opacity: 0.6;
}

.testimonial-card__text {
  font-size: 0.97rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: var(--s6);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--s3);
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: var(--blue);
  flex-shrink: 0;
}

.testimonial-card__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-1);
}

.testimonial-card__role {
  font-size: 0.78rem;
  color: var(--text-3);
}

/* ============================================
   СЕРТИФИКАТЫ
   ============================================ */

.cert-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s3);
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: var(--s2);
  padding: var(--s2) var(--s4);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-2);
  background: var(--surface);
}

.cert-badge svg {
  width: 16px;
  height: 16px;
  color: var(--blue);
}

/* ============================================
   РАЗДЕЛ С КАРТОЙ
   ============================================ */

.map-wrap {
  border-radius: var(--r-xl);
  overflow: hidden;
  border: 1px solid var(--border-lt);
  height: 400px;
  position: relative;
}

.map-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: invert(90%) hue-rotate(180deg) saturate(0.8) brightness(0.9);
}

/* ============================================
   АДАПТИВНОСТЬ — КОМПОНЕНТЫ
   ============================================ */

@media (max-width: 1080px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .stats-grid   { grid-template-columns: repeat(2, 1fr); }
  .stats-grid .stat-item:nth-child(2)::after { display: none; }

  .anatomy__layout { grid-template-columns: 1fr; }
  .anatomy__svg-wrap { order: -1; }
}

@media (max-width: 768px) {
  .navbar__links { display: none; }
  .navbar__right .btn { display: none; }
  .hamburger { display: flex; }

  .hero__cta-group { flex-direction: column; align-items: flex-start; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .calc-options { grid-template-columns: 1fr; }
  .calc-contact-grid { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .calc-finish-option { flex-wrap: wrap; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item:nth-child(even)::after { display: none; }
}