/* ===== QUENTEX — Presentation style ===== */
:root {
  --bg: #0f0e0c;
  --bg-soft: #181614;
  --surface: #1e1c18;
  --cream: #e8e4dc;
  --cream-muted: #a8a399;
  --gold: #c9a962;
  --gold-dim: #9a7b3d;
  --accent: #d4af6a;
  --border: rgba(201, 169, 98, 0.2);
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: "Outfit", system-ui, sans-serif;
  --space: clamp(1.5rem, 4vw, 3rem);
  --container: min(90vw, 1100px);
  /* Slide-style light sections */
  --slide-bg: #f5f2eb;
  --slide-text: #1a1916;
  --slide-text-muted: #5c574d;
  --slide-border: rgba(26, 25, 22, 0.08);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--cream);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--gold); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }

.page { min-height: 100vh; position: relative; }

/* ===== Language switcher ===== */
.lang-nav {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 100;
  padding: 1.25rem var(--space);
  display: flex;
  gap: 0.5rem;
}
.lang-nav__link {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--cream-muted);
  padding: 0.35rem 0.5rem;
  transition: color 0.2s;
}
.lang-nav__link:hover { color: var(--cream); }
.lang-nav__link.is-active { color: var(--gold); pointer-events: none; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space);
}
@media (max-width: 480px) {
  .container { padding-left: 1rem; padding-right: 1rem; }
}

/* ===== Slide number (presentation style) ===== */
.section__num {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--gold-dim);
  margin-bottom: 0.5rem;
}
.section--light .section__num { color: var(--gold-dim); }

/* ===== Hero — full-bleed image like slide 1 ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding: var(--space);
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,14,12,0.75) 0%, rgba(15,14,12,0.5) 50%, rgba(15,14,12,0.85) 100%);
  z-index: 1;
}
.hero__content { position: relative; z-index: 2; }
.hero .section__num { color: rgba(232,228,220,0.7); margin-bottom: 0.75rem; }
.hero__label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin: 0 0 1.5rem;
}
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 500;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  color: var(--cream);
  letter-spacing: -0.02em;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero__subtitle {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(232,228,220,0.9);
  margin: 0 0 0.5rem;
}
.hero__tagline {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-style: italic;
  color: var(--gold);
  margin: 0 0 1.25rem;
  font-weight: 400;
}
.hero__intro {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--cream-muted);
  max-width: 28em;
  margin: 0 auto 0.75rem;
  line-height: 1.65;
}
.hero__slogan {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--gold);
  margin: 0 0 2rem;
}
.hero__cta {
  display: inline-block;
  padding: 0.9rem 2.2rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--gold);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.hero__cta:hover {
  background: var(--accent);
  transform: translateY(-1px);
}
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cream-muted);
  opacity: 0.9;
  z-index: 2;
}

/* ===== Section common ===== */
.section {
  padding: clamp(4rem, 10vw, 7rem) 0;
  position: relative;
}
.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 500;
  color: var(--cream);
  margin: 0 0 var(--space);
  letter-spacing: -0.02em;
}

/* ===== Light slide sections (presentation style) ===== */
.section--light {
  background: var(--slide-bg);
  color: var(--slide-text);
}
.section--light .section__title { color: var(--slide-text); }
.section--light .tech__lead,
.section--light .economy__intro,
.section--light .economy__compare,
.section--light .use__intro,
.section--light .why__item { color: var(--slide-text-muted); }
.section--light .tech__lead strong,
.section--light .economy__compare strong,
.section--light .why__item strong { color: var(--slide-text); }
.section--light .cert {
  background: #fff;
  border-color: var(--slide-border);
  color: var(--slide-text);
}
.section--light .cert__name { color: var(--slide-text); }
.section--light .cert__num { color: var(--slide-text-muted); }
.section--light .economy__card {
  background: #fff;
  border-color: var(--slide-border);
}
.section--light .economy__value,
.section--light .economy__unit,
.section--light .economy__desc { color: var(--slide-text-muted); }
.section--light .economy__value { color: var(--gold-dim); }
.section--light .use__card {
  background: #fff;
  border-color: var(--slide-border);
}
.section--light .use__name { color: var(--slide-text); }
.section--light .use__desc { color: var(--slide-text-muted); }
.section--light .why__item { border-left-color: var(--slide-border); }
.section--light .why__item:hover { border-left-color: var(--gold-dim); }

/* ===== Technology — with image ===== */
.tech { background: var(--bg-soft); }
.tech__wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space);
  align-items: center;
  margin-bottom: 2rem;
}
@media (max-width: 768px) {
  .tech__wrap { grid-template-columns: 1fr; }
  .tech__img { order: -1; max-height: 280px; }
}
.tech__img {
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tech__img img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
}
.tech__lead {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--cream-muted);
  max-width: 42em;
  margin: 0 0 1.5rem;
  line-height: 1.7;
}
.tech__lead strong { color: var(--cream); font-weight: 500; }
.tech__local {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 1.5rem;
}
.tech__cert-intro {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin: 0 0 1.25rem;
}
.tech__structure {
  font-size: 0.85rem;
  color: var(--cream-muted);
  margin: 1.5rem 0 0;
}
.certs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}
.cert {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.25rem 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.cert:hover {
  border-color: rgba(201, 169, 98, 0.35);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}
.cert__name { font-weight: 500; color: var(--cream); grid-column: 1; }
.cert__num { font-size: 0.8rem; color: var(--gold-dim); grid-column: 2; text-align: right; }
.cert__note { font-size: 0.8rem; color: var(--cream-muted); grid-column: 1 / -1; }
@media (max-width: 480px) {
  .cert { grid-template-columns: 1fr; gap: 0.35rem 0; }
  .cert__num { grid-column: 1; text-align: left; }
}

/* ===== Why QUENTEX ===== */
.why { background: var(--bg); }
.why__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
  max-width: 42em;
}
.why__item {
  font-size: 1rem;
  color: var(--cream-muted);
  line-height: 1.65;
  padding-left: 1.25rem;
  border-left: 2px solid var(--border);
  transition: border-color 0.2s;
}
.why__item:hover { border-left-color: rgba(201, 169, 98, 0.4); }
.why__item strong { color: var(--cream); font-weight: 500; }

/* ===== Economy ===== */
.economy { background: var(--slide-bg); }
.economy .section__num { color: var(--gold-dim); }
.economy .section__title { color: var(--slide-text); }
.economy__intro {
  font-size: 1rem;
  color: var(--slide-text-muted);
  margin: 0 0 1.5rem;
  max-width: 32em;
}
.economy__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space);
  margin-bottom: 2rem;
}
.economy__card {
  padding: 2rem 1.5rem;
  background: #fff;
  border: 1px solid var(--slide-border);
  border-radius: 8px;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}
.economy__card:hover {
  border-color: rgba(201, 169, 98, 0.35);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}
.economy__card--highlight {
  border-color: rgba(201, 169, 98, 0.5);
  background: linear-gradient(180deg, rgba(201, 169, 98, 0.08) 0%, #fff 100%);
}
.economy__value {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  color: var(--gold-dim);
  margin-bottom: 0.25rem;
}
.economy__unit { display: block; font-size: 0.85rem; color: var(--slide-text-muted); margin-bottom: 0.75rem; }
.economy__desc { font-size: 0.85rem; color: var(--slide-text-muted); margin: 0; line-height: 1.5; }
.economy__compare { font-size: 1rem; color: var(--slide-text-muted); margin: 0; }
.economy__compare strong { color: var(--slide-text); }

/* ===== Use — gallery of carpets ===== */
.use { background: var(--bg); }
.use__gallery-title {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin: 0 0 1.25rem;
}
/* ===== Carousel — вертикальные фото, бесконечная прокрутка, затухание по краям ===== */
.carousel-wrap {
  position: relative;
  margin: 0 calc(-1 * var(--space));
  margin-bottom: var(--space);
}
.carousel-fade {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 60px;
  max-width: 15vw;
  z-index: 2;
  pointer-events: none;
}
.carousel-fade--left {
  left: 0;
  background: linear-gradient(to right, var(--bg) 0%, transparent 100%);
}
.carousel-fade--right {
  right: 0;
  background: linear-gradient(to left, var(--bg) 0%, transparent 100%);
}
.carousel {
  direction: ltr;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  min-height: 200px;
}
.carousel::-webkit-scrollbar { display: none; }
.carousel__track {
  direction: ltr;
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 12px;
  padding: 0 var(--space);
  width: max-content;
  min-width: 100%;
  box-sizing: border-box;
}
.carousel__slide {
  flex: 0 0 calc(85vw - var(--space));
  min-width: 200px;
  scroll-snap-align: center;
  scroll-snap-stop: always;
}
.carousel__slide img {
  width: 100%;
  aspect-ratio: 3 / 4;
  max-height: 66.67vh;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
  vertical-align: top;
}
@media (min-width: 480px) {
  .carousel__slide { flex: 0 0 calc(45vw - var(--space)); }
}
@media (min-width: 768px) {
  .carousel__slide { flex: 0 0 calc(33.333vw - 20px); }
}
@media (min-width: 1024px) {
  .carousel__slide { flex: 0 0 calc(25vw - 24px); }
}
.use__intro {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--gold-dim);
  margin: 0 0 1.5rem;
}
.use__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space);
}
.use__grid--four { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.use__card {
  padding: 2.5rem 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.use__card:hover {
  border-color: rgba(201, 169, 98, 0.35);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}
.use__card--featured {
  border-color: rgba(201, 169, 98, 0.45);
  background: linear-gradient(180deg, rgba(201, 169, 98, 0.06) 0%, var(--surface) 100%);
}
.use__card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 1rem;
}
.use__size { display: block; font-size: 0.8rem; letter-spacing: 0.08em; color: var(--gold-dim); margin-bottom: 0.75rem; }
.use__name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--cream);
  margin: 0 0 0.5rem;
}
.use__desc { font-size: 0.95rem; color: var(--cream-muted); margin: 0; }

/* ===== CTA ===== */
.cta {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: clamp(4rem, 10vw, 6rem) 0;
  overflow: hidden;
  background: var(--bg-soft);
}
.cta__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 50%, rgba(201, 169, 98, 0.06) 0%, transparent 60%),
    var(--bg);
  z-index: 0;
}
.cta__container { position: relative; z-index: 1; text-align: center; }
.cta__title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 500;
  color: var(--cream);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.cta__brand {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-dim);
  margin: 0 0 1rem;
}
.cta__text {
  font-size: 1.05rem;
  color: var(--cream-muted);
  max-width: 28em;
  margin: 0 auto 2rem;
  line-height: 1.7;
}
.cta__contacts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2.5rem;
  margin-bottom: 1rem;
}
.cta__link {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--gold);
  padding: 0.5rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.cta__link:hover { color: var(--accent); border-bottom-color: var(--accent); }
.cta__hint { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--cream-muted); margin: 0; opacity: 0.9; }

/* ===== Contact form ===== */
.contact-form {
  margin-top: 2.5rem;
  max-width: 520px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  display: grid;
  gap: 0.85rem;
  text-align: left;
}
.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}
@media (max-width: 480px) {
  .contact-form__row { grid-template-columns: 1fr; }
}
.contact-form__input,
.contact-form__textarea {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--cream);
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.contact-form__input::placeholder,
.contact-form__textarea::placeholder { color: var(--cream-muted); }
.contact-form__input:focus,
.contact-form__textarea:focus { border-color: rgba(201,169,98,0.5); }
.contact-form__textarea { resize: vertical; min-height: 110px; }
.contact-form__btn {
  padding: 0.95rem 2rem;
  background: var(--gold);
  color: var(--bg);
  border: none;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}
.contact-form__btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
}
.contact-form__note {
  font-size: 0.78rem;
  color: var(--cream-muted);
  text-align: center;
  margin: 0;
  opacity: 0.8;
}

/* ===== Floating button (FAB) — в стиле сайта ===== */
.fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.75rem 1.35rem;
  background: var(--surface);
  color: var(--gold);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.fab svg { flex-shrink: 0; }
.fab:hover {
  border-color: rgba(201,169,98,0.45);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ===== Modal — в стиле сайта ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(15,14,12,0.88);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}
.modal {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2.5rem 2.25rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
  transform: translateY(12px);
  transition: transform 0.3s ease;
  text-align: center;
}
.modal-overlay.is-open .modal { transform: translateY(0); }
.modal__close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: var(--cream-muted);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  transition: color 0.2s;
  font-weight: 300;
}
.modal__close:hover { color: var(--cream); }
.modal__title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 500;
  color: var(--cream);
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
}
.modal__sub {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--cream-muted);
  margin: 0 0 1.75rem;
  letter-spacing: 0.02em;
}
.modal__form {
  display: grid;
  gap: 0.9rem;
  text-align: left;
}
.modal__input {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.9rem 1.1rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--cream);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}
.modal__input::placeholder { color: var(--cream-muted); opacity: 0.9; }
.modal__input:focus {
  border-color: rgba(201,169,98,0.4);
  box-shadow: 0 0 0 1px rgba(201,169,98,0.15);
}
.modal__btn {
  margin-top: 0.25rem;
  padding: 0.9rem 1.5rem;
  background: var(--gold);
  color: var(--bg);
  border: none;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
}
.modal__btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
}
.modal__success {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--gold);
  margin: 1rem 0 0;
}

/* ===== Footer ===== */
.footer {
  padding: 2rem var(--space);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.footer__brand { font-family: var(--font-sans); font-size: 0.8rem; font-weight: 500; letter-spacing: 0.2em; color: var(--gold-dim); }
.footer__copy { font-family: var(--font-serif); font-style: italic; font-size: 0.9rem; color: var(--cream-muted); }

@media (prefers-reduced-motion: no-preference) {
  .hero__title, .hero__tagline, .hero__cta { animation: fadeUp 0.8s ease-out backwards; }
  .hero__tagline { animation-delay: 0.15s; }
  .hero__cta { animation-delay: 0.3s; }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Адаптив: планшеты и телефоны ===== */
@media (max-width: 768px) {
  .lang-nav { padding: 0.85rem 1rem; }
  .hero { padding: 1.5rem 1rem 4rem; min-height: 100svh; }
  .hero__label { letter-spacing: 0.2em; margin-bottom: 1rem; }
  .hero__title { font-size: clamp(1.75rem, 8vw, 2.5rem); }
  .hero__intro { font-size: 0.9rem; }
  .hero__scroll { bottom: 1.25rem; font-size: 0.65rem; }
  .section { padding: 2.5rem 0 3.5rem; }
  .section__title { font-size: clamp(1.5rem, 5vw, 1.85rem); margin-bottom: 1.25rem; }
  .economy__grid { grid-template-columns: 1fr; gap: 1rem; }
  .economy__card { padding: 1.5rem 1.25rem; }
  .use__grid--four { grid-template-columns: 1fr; }
  .use__card { padding: 1.75rem 1.25rem; }
  .use__name { font-size: 1.35rem; }
  .cta { min-height: auto; padding: 2.5rem 0 3rem; }
  .cta__title { font-size: clamp(1.5rem, 5vw, 1.9rem); }
  .cta__contacts { flex-direction: column; gap: 0.75rem; align-items: center; }
  .cta__link { font-size: 1rem; min-height: 44px; display: inline-flex; align-items: center; }
  .fab { bottom: 1.25rem; right: 1rem; padding: 0.65rem 1rem; font-size: 0.7rem; letter-spacing: 0.08em; }
  .fab span { max-width: 0; overflow: hidden; opacity: 0; transition: max-width 0.2s, opacity 0.2s; }
  .modal { padding: 2rem 1.5rem 1.75rem; margin: 0 1rem; max-width: none; }
  .modal__title { font-size: 1.35rem; }
  .modal__input, .modal__btn { min-height: 48px; }
  .footer { padding: 1.5rem 1rem; flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  :root { --space: 1.25rem; }
  .hero__title { font-size: 1.65rem; }
  .hero__cta { padding: 0.85rem 1.75rem; font-size: 0.8rem; min-height: 48px; }
  .carpet-gallery { gap: 0.5rem; margin-bottom: 1.5rem; }
  .carpet-gallery img { aspect-ratio: 3/4; }
  .tech__lead { font-size: 0.95rem; }
  .tech__local, .tech__cert-intro { font-size: 0.75rem; }
  .why__item { font-size: 0.95rem; padding-left: 1rem; }
}