/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #1a1a1a;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
input, textarea, select, button { font-family: inherit; font-size: inherit; }

/* ===== CONTAINER ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 2px solid transparent;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn--primary {
  background: #E53935;
  color: #fff;
  border-color: #E53935;
}
.btn--primary:hover { background: #c62828; border-color: #c62828; }
.btn--outline {
  background: transparent;
  color: #1a1a1a;
  border-color: #1a1a1a;
}
.btn--outline:hover { background: #1a1a1a; color: #fff; }
.btn--sm { padding: 8px 20px; font-size: 14px; }
.btn--lg { padding: 14px 32px; font-size: 16px; }
.btn--full { width: 100%; }

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #ffffff;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: box-shadow 0.3s;
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.header__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-img { height: 36px; width: auto; }
.logo-img--footer { height: 28px; }
.header__nav {
  display: flex;
  gap: 24px;
}
.header__link {
  font-size: 14px;
  font-weight: 500;
  color: #555;
  transition: color 0.2s;
  position: relative;
}
.header__link:hover { color: #E53935; }
.header__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #E53935;
  transition: width 0.3s;
}
.header__link:hover::after { width: 100%; }
.header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.header__phone {
  font-weight: 700;
  font-size: 15px;
  color: #1a1a1a;
}
.header__phone:hover { color: #E53935; }
.header__cta { display: inline-flex; }
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span {
  width: 24px;
  height: 2px;
  background: #1a1a1a;
  transition: all 0.3s;
  border-radius: 2px;
}
.burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.burger.active span:nth-child(2) { opacity: 0; }
.burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
.hero {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  overflow: hidden;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero__title {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
}
.accent { color: #E53935; }
.hero__subtitle {
  font-size: 18px;
  color: #555;
  margin-bottom: 32px;
  max-width: 520px;
}
.hero__buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat { text-align: center; }
.stat__number {
  display: block;
  font-size: 36px;
  font-weight: 900;
  color: #E53935;
}
.stat__label {
  font-size: 13px;
  color: #777;
  font-weight: 500;
}
.hero__image { position: relative; }
.hero__photo {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.15);
  object-fit: cover;
  max-height: 500px;
}

/* ===== TRUST BAR ===== */
.trust-bar {
  background: #1a1a1a;
  padding: 20px 0;
}
.trust-bar__items {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
}
.trust-item svg { flex-shrink: 0; color: #E53935; }

/* ===== SECTIONS ===== */
.section { padding: 40px 0; }
.section--gray { background: #f7f7f7; }
.section--dark { background: #1a1a1a; color: #fff; }
.section__header {
  text-align: center;
  margin-bottom: 40px;
}
.section__header--light .section__title { color: #fff; }
.section__header--light .section__desc { color: #aaa; }
.section__title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}
.section__desc {
  font-size: 17px;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== BUILD MATERIALS GRID ===== */
.build__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
}
.build__title {
  font-size: 36px;
  font-weight: 800;
}
.build__link {
  font-size: 15px;
  font-weight: 600;
  color: #E53935;
  transition: opacity 0.2s;
}
.build__link:hover { opacity: 0.7; }
.build__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 180px;
  gap: 6px;
}
.build__card {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  display: block;
  text-decoration: none;
  color: #fff;
}
.build__card--main {
  grid-row: span 1;
}
.build__card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease;
}
.build__card:hover .build__card-bg { transform: scale(1.06); }
.build__card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
}
.build__card-content span {
  display: inline-block;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(4px);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
}
.build__card-content--main {
  top: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 60%);
  padding: 20px;
}
.build__card-content--main h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
}
.build__card-content--main p {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255,255,255,0.85);
}

@media (max-width: 768px) {
  .build__grid {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: 150px;
  }
  .build__card--main { grid-column: span 2; }
  .build__title { font-size: 28px; }
}

/* ===== SERVICES ===== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  border-color: #E53935;
}
.service-card__icon {
  width: 64px;
  height: 64px;
  margin-bottom: 20px;
}
.service-card__icon svg { width: 100%; height: 100%; stroke: #E53935; }
.service-card__title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.service-card__desc {
  font-size: 14px;
  color: #666;
  margin-bottom: 16px;
  line-height: 1.5;
}
.service-card__price {
  font-size: 16px;
  font-weight: 700;
  color: #E53935;
}

/* ===== MATERIALS ===== */
.materials__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.material-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px;
  border: 1px solid #eee;
  transition: all 0.3s;
}
.material-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
.material-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.material-card__header h3 { font-size: 18px; font-weight: 700; }
.material-card__badge {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  background: #FFF3E0;
  color: #E65100;
}
.material-card__badge--green { background: #E8F5E9; color: #2E7D32; }
.material-card__badge--blue { background: #E3F2FD; color: #1565C0; }
.material-card__features {
  margin-bottom: 20px;
}
.material-card__features li {
  padding: 6px 0;
  font-size: 14px;
  color: #555;
  display: flex;
  align-items: center;
  gap: 8px;
}
.material-card__features li::before {
  content: '✓';
  color: #E53935;
  font-weight: 700;
  font-size: 14px;
}
.material-card__price {
  font-size: 18px;
  font-weight: 700;
  color: #E53935;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

/* ===== PROJECTS CAROUSEL ===== */
.projects__scroll {
  overflow: hidden;
  margin: 0 -20px;
  padding: 0 20px;
}
.projects__track {
  display: flex;
  gap: 20px;
  transition: transform 0.5s ease;
  cursor: grab;
}
.projects__track:active { cursor: grabbing; }
.proj-card {
  flex: 0 0 320px;
  height: 420px;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  display: block;
  text-decoration: none;
  color: #fff;
}
.proj-card__img {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s ease;
}
.proj-card:hover .proj-card__img { transform: scale(1.05); }
.proj-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(transparent 0%, rgba(0,0,0,0.75) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 55%;
}
.proj-card__tag {
  display: none;
  background: #E53935;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 10px;
  width: fit-content;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.proj-card__name {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 10px;
  line-height: 1.2;
}
.proj-card__params {
  display: flex;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.8);
  margin-bottom: 12px;
}
.proj-card__params span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.proj-card__params span::before {
  content: '';
  width: 4px;
  height: 4px;
  background: #E53935;
  border-radius: 50%;
}
.proj-card__params span:first-child::before { display: none; }
.proj-card__price {
  font-size: 24px;
  font-weight: 800;
}
.projects__nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}
.projects__arrow {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid #ddd;
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  color: #333;
}
.projects__arrow:hover {
  background: #1a1a1a;
  border-color: #1a1a1a;
  color: #fff;
}
.projects__cta {
  text-align: center;
  margin-top: 32px;
}

/* ===== PROJECTS GRID (legacy) ===== */
.projects__filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 24px;
  border: 2px solid #ddd;
  border-radius: 40px;
  background: transparent;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
}
.filter-btn:hover, .filter-btn.active {
  background: #1a1a1a;
  color: #fff;
  border-color: #1a1a1a;
}
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-card {
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #eee;
  transition: all 0.3s;
}
.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
.project-card.hidden { display: none; }
.project-card__image svg { width: 100%; display: block; }
.project-card__info { padding: 20px; }
.project-card__info h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.project-card__meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: #888;
  margin-bottom: 12px;
}
.project-card__meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.project-card__price {
  font-size: 20px;
  font-weight: 800;
  color: #E53935;
}

/* ===== COMPLECTATIONS ===== */
.complect__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.complect-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 16px;
  padding: 28px;
  position: relative;
  transition: all 0.3s;
}
.complect-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}
.complect-card--popular {
  border-color: #E53935;
  box-shadow: 0 8px 30px rgba(229,57,53,0.15);
}
.complect-card__badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #E53935;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
}
.complect-card__header {
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eee;
}
.complect-card__header h3 { font-size: 18px; font-weight: 700; }
.complect-card__list { margin-bottom: 24px; }
.complect-card__list li {
  padding: 6px 0;
  font-size: 14px;
  color: #555;
  display: flex;
  align-items: center;
  gap: 8px;
}
.complect-card__list li::before {
  content: '✓';
  color: #E53935;
  font-weight: 700;
}
.complect-card__price {
  text-align: center;
  margin-bottom: 20px;
}
.complect-card__from {
  font-size: 14px;
  color: #888;
}
.complect-card__amount {
  display: block;
  font-size: 22px;
  font-weight: 800;
  color: #1a1a1a;
}

/* ===== STAGES ===== */
.stages__timeline {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}
.stages__timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #eee;
}
.stage {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
  position: relative;
}
.stage:last-child { margin-bottom: 0; }
.stage__number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #E53935;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.stage__content {
  padding-top: 8px;
}
.stage__content h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}
.stage__content p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

/* ===== CALCULATOR ===== */
.calc {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}
.calc__form {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 32px;
}
.calc__group { margin-bottom: 24px; }
.calc__group:last-child { margin-bottom: 0; }
.calc__label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #ccc;
  margin-bottom: 10px;
}
.calc__options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.calc__option {
  padding: 10px 18px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  background: transparent;
  color: #aaa;
  font-weight: 500;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}
.calc__option:hover { border-color: #E53935; color: #fff; }
.calc__option.active {
  background: #E53935;
  border-color: #E53935;
  color: #fff;
}
.calc__range {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.15);
  outline: none;
}
.calc__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #E53935;
  cursor: pointer;
  border: 3px solid #fff;
}
.calc__range::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #E53935;
  cursor: pointer;
  border: 3px solid #fff;
}
.calc__range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: #666;
  margin-top: 6px;
}
.calc__result {
  position: sticky;
  top: 100px;
}
.calc__result-inner {
  background: #fff;
  border-radius: 16px;
  padding: 36px;
  text-align: center;
  color: #1a1a1a;
}
.calc__result-label {
  font-size: 14px;
  font-weight: 600;
  color: #888;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.calc__result-price {
  font-size: 40px;
  font-weight: 900;
  color: #E53935;
  margin-bottom: 4px;
}
.calc__result-per {
  font-size: 16px;
  color: #888;
  margin-bottom: 24px;
}
.calc__result-note {
  font-size: 13px;
  color: #aaa;
  margin-bottom: 24px;
  line-height: 1.5;
}
.calc__result-disclaimer {
  font-size: 12px;
  color: #aaa;
  margin-top: 12px;
}

/* ===== ADVANTAGES ===== */
.advantages__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.advantage {
  text-align: center;
  padding: 24px;
}
.advantage__icon {
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
}
.advantage h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.advantage p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq__list {
  max-width: 750px;
  margin: 0 auto;
}
.faq__item {
  border: 1px solid #eee;
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  background: #fff;
}
.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
}
.faq__question:hover { color: #E53935; }
.faq__question svg {
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq__item.active .faq__question svg { transform: rotate(180deg); }
.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq__answer p {
  padding: 0 24px 20px;
  font-size: 15px;
  color: #666;
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta { background: linear-gradient(135deg, #E53935 0%, #c62828 100%); color: #fff; }
.cta__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.cta__text h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.cta__text p { font-size: 16px; opacity: 0.9; }
.cta__form form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cta__form input {
  padding: 14px 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}
.cta__form input::placeholder { color: rgba(255,255,255,0.6); }
.cta__form input:focus { border-color: #fff; }
.cta__form .btn--primary {
  background: #fff;
  color: #E53935;
  border-color: #fff;
}
.cta__form .btn--primary:hover { background: #f5f5f5; }
.cta__disclaimer { font-size: 12px; opacity: 0.7; text-align: center; margin-top: 8px; }

/* ===== CONTACTS ===== */
.contacts__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}
.contact-item strong { display: block; font-weight: 700; margin-bottom: 2px; }
.contact-item a:hover { color: #E53935; }
.contacts__socials {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}
.social-link {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  color: #555;
}
.social-link:hover { background: #E53935; color: #fff; }
.contacts__form form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fff;
  padding: 32px;
  border-radius: 16px;
  border: 1px solid #eee;
}
.contacts__form h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.contacts__form input,
.contacts__form textarea {
  padding: 14px 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
}
.contacts__form input:focus,
.contacts__form textarea:focus { border-color: #E53935; }

/* ===== FOOTER ===== */
.footer {
  background: #111;
  color: #aaa;
  padding: 32px 0;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer__logo .logo-icon { width: 32px; height: 32px; }
.footer__copy { font-size: 14px; }
.footer__links a {
  font-size: 14px;
  color: #888;
  transition: color 0.2s;
}
.footer__links a:hover { color: #E53935; }

/* ===== MOBILE STICKY ===== */
.mobile-sticky {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: #fff;
  padding: 8px 12px;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  gap: 8px;
}
.mobile-sticky__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
}
.mobile-sticky__btn--call {
  background: #E53935;
  color: #fff;
}
.mobile-sticky__btn--wa {
  background: #25D366;
  color: #fff;
}

/* ===== MODAL ===== */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 2000;
  align-items: center;
  justify-content: center;
}
.modal.active { display: flex; }
.modal__overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
}
.modal__content {
  position: relative;
  background: #fff;
  border-radius: 20px;
  padding: 40px;
  max-width: 460px;
  width: 90%;
  z-index: 1;
  animation: modalIn 0.3s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
.modal__close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: #999;
  transition: color 0.2s;
}
.modal__close:hover { color: #333; }
.modal__title { font-size: 24px; font-weight: 800; margin-bottom: 8px; }
.modal__desc { font-size: 15px; color: #666; margin-bottom: 24px; }
.modal form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modal input, .modal select {
  padding: 14px 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  outline: none;
}
.modal input:focus, .modal select:focus { border-color: #E53935; }
.modal__disclaimer { font-size: 12px; color: #aaa; text-align: center; margin-top: 12px; }

/* ===== EXIT POPUP ===== */
.exit-popup {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 3000;
  align-items: center;
  justify-content: center;
}
.exit-popup.active { display: flex; }
.exit-popup__overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
}
.exit-popup__content {
  position: relative;
  background: #fff;
  border-radius: 20px;
  padding: 40px;
  max-width: 460px;
  width: 90%;
  z-index: 1;
  text-align: center;
  animation: modalIn 0.3s ease;
}
.exit-popup__close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: #999;
}
.exit-popup__content h3 { font-size: 22px; font-weight: 800; margin-bottom: 12px; }
.exit-popup__content p { font-size: 15px; color: #555; margin-bottom: 24px; line-height: 1.6; }
.exit-popup form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.exit-popup input {
  padding: 14px 20px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 15px;
  outline: none;
}

/* ===== HEADER DESCRIPTOR ===== */
.header__descriptor {
  display: none;
  font-size: 10px;
  color: #888;
  font-weight: 500;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
@media (min-width: 769px) {
  .header__descriptor { display: block; margin-top: -2px; }
  .header__logo { flex-direction: column; gap: 2px; }
}

/* ===== BEFORE / AFTER ===== */
.ba__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.ba__item { text-align: center; }
.ba__slider {
  position: relative;
  width: 100%;
  height: 320px;
  border-radius: 12px;
  overflow: hidden;
  background: #eee;
}
.ba__before, .ba__after {
  position: absolute;
  inset: 0;
}
.ba__before { z-index: 1; }
.ba__after { z-index: 0; }
.ba__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.ba__placeholder span { font-size: 13px; color: #999; font-weight: 500; }
.ba__placeholder--before { background: #e8e8e8; }
.ba__placeholder--after { background: #d4e8d4; }
.ba__range {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  z-index: 10;
  width: calc(100% - 24px);
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: rgba(255,255,255,0.5);
  border-radius: 2px;
  outline: none;
}
.ba__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid #E53935;
  cursor: ew-resize;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.ba__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background: #E53935;
  z-index: 5;
  pointer-events: none;
}
.ba__info { margin-top: 16px; }
.ba__info h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.ba__info p { font-size: 14px; color: #666; }

/* ===== TECH INSIDE ===== */
.tech__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.tech__card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.3s;
}
.tech__card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.tech__img {
  height: 200px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech__img-label {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
}
.tech__card h3 { padding: 16px 16px 8px; font-size: 16px; font-weight: 700; }
.tech__card p { padding: 0 16px 16px; font-size: 13px; color: #666; line-height: 1.5; }

/* ===== TEAM ===== */
.team__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team__member {
  text-align: center;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 16px;
  padding: 32px 20px;
  transition: all 0.3s;
}
.team__member:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.08); }
.team__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, #E53935, #c62828);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.team__avatar span {
  color: #fff;
  font-size: 24px;
  font-weight: 700;
}
.team__member h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.team__role { font-size: 13px; color: #E53935; font-weight: 600; margin-bottom: 12px; }
.team__desc { font-size: 13px; color: #666; line-height: 1.5; }

/* ===== CONTRACT ===== */
.contract__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.contract__text h2 { font-size: 32px; font-weight: 800; margin-bottom: 16px; }
.contract__text > p { font-size: 16px; color: #666; margin-bottom: 24px; }
.contract__list { margin-bottom: 32px; }
.contract__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  line-height: 1.5;
}
.contract__list li svg { flex-shrink: 0; margin-top: 2px; }
.contract__preview {
  background: #f7f7f7;
  border-radius: 16px;
  padding: 32px;
  display: flex;
  justify-content: center;
}
.contract__page {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 32px 28px;
  width: 100%;
  max-width: 340px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.contract__page-header {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eee;
}
.contract__stamp {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid #E53935;
  flex-shrink: 0;
}
.contract__line {
  height: 8px;
  background: #f0f0f0;
  border-radius: 4px;
  margin-bottom: 8px;
}
.contract__line--title { height: 12px; background: #ddd; width: 70%; margin-bottom: 6px; }
.contract__line--sub { height: 8px; background: #eee; width: 50%; }
.contract__line--short { width: 60%; }
.contract__line--sig { width: 80px; height: 2px; background: #333; margin-bottom: 4px; }
.contract__highlight {
  background: #e8f5e9;
  border-left: 3px solid #43A047;
  padding: 10px 14px;
  margin: 12px 0;
  border-radius: 0 6px 6px 0;
  font-size: 12px;
  color: #2E7D32;
}
.contract__highlight--warn {
  background: #fff3e0;
  border-left-color: #E65100;
  color: #E65100;
}
.contract__signatures {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #eee;
  font-size: 11px;
  color: #999;
}

/* ===== RESPONSIVE NEW SECTIONS ===== */
@media (max-width: 1024px) {
  .tech__grid { grid-template-columns: repeat(2, 1fr); }
  .team__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ba__grid { grid-template-columns: 1fr; }
  .ba__slider { height: 250px; }
  .tech__grid { grid-template-columns: 1fr; }
  .team__grid { grid-template-columns: 1fr 1fr; }
  .contract__inner { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 480px) {
  .team__grid { grid-template-columns: 1fr; }
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero__title { font-size: 36px; }
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .materials__grid { grid-template-columns: repeat(2, 1fr); }
  .complect__grid { grid-template-columns: repeat(2, 1fr); }
  .advantages__grid { grid-template-columns: repeat(2, 1fr); }
  .calc { grid-template-columns: 1fr; }
  .calc__result { position: static; }
}

@media (max-width: 768px) {
  .header__nav { display: none; }
  .header__nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    padding: 20px;
    gap: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  }
  .header__actions { display: none; }
  .burger { display: flex; }

  .hero__inner { grid-template-columns: 1fr; gap: 32px; }
  .hero__title { font-size: 30px; }
  .hero__subtitle { font-size: 16px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .hero__image { order: -1; }

  .trust-bar__items { flex-direction: column; gap: 12px; align-items: flex-start; }

  .section { padding: 40px 0; }
  .section__title { font-size: 28px; }

  .services__grid { grid-template-columns: 1fr; }
  .materials__grid { grid-template-columns: 1fr; }
  .projects__grid { grid-template-columns: 1fr; }
  .proj-card { flex: 0 0 280px; height: 360px; }
  .proj-card__name { font-size: 18px; }
  .proj-card__price { font-size: 20px; }
  .complect__grid { grid-template-columns: 1fr; }
  .advantages__grid { grid-template-columns: 1fr; }

  .cta__inner { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .contacts__grid { grid-template-columns: 1fr; }

  .mobile-sticky { display: flex; }
  body { padding-bottom: 70px; }

  .stat__number { font-size: 28px; }
  .calc__result-price { font-size: 32px; }
}

@media (max-width: 480px) {
  .hero__title { font-size: 26px; }
  .hero__buttons { flex-direction: column; }
  .hero__buttons .btn { width: 100%; }
}