:root {
  --blue: #1e4ba8;
  --blue-d: #163a82;
  --blue-s: #e8eef8;
  --ink: #2b2b2b;
  --muted: #5c6168;
  --line: #e4e6ea;
  --bg: #f6f7f9;
  --white: #fff;
  --dark: #14181f;
  --radius: 14px;
  --shadow: 0 18px 40px rgba(20, 24, 31, 0.12);
  --header: 84px;
  --cta: 64px;
  --font: "Source Sans 3", system-ui, sans-serif;
  --display: Manrope, system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.05rem;
  line-height: 1.6;
  background: var(--white);
}

img, svg, video { max-width: 100%; display: block; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; letter-spacing: -0.03em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 700; }

.screen-reader-text,
.rtc-skip {
  position: absolute;
  left: -999px;
  top: 0;
}
.rtc-skip:focus {
  left: 12px;
  top: 12px;
  z-index: 1000;
  background: var(--white);
  padding: 8px 12px;
}

.rtc-wrap {
  width: min(1180px, calc(100% - 32px));
  margin-inline: auto;
}

.rtc-kicker {
  margin: 0 0 8px;
  color: var(--blue);
  font-family: var(--display);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.rtc-kicker--light { color: #c9d7f2; }
.rtc-lead { font-size: 1.15rem; color: var(--muted); max-width: 46rem; }
.rtc-center { text-align: center; margin-top: 32px; }
.rtc-section { padding: 72px 0; }
.rtc-section--muted { background: var(--bg); }
.rtc-section--dark { background: var(--dark); color: var(--white); }
.rtc-section--dark p { color: #c5cad3; }

.rtc-head { max-width: 720px; margin-bottom: 36px; }
.rtc-head--row {
  max-width: none;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
}
.rtc-head--row > div { max-width: 720px; }

.rtc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--display);
  font-weight: 700;
  cursor: pointer;
}
.rtc-btn--primary { background: var(--blue); color: var(--white); }
.rtc-btn--primary:hover { background: var(--blue-d); }
.rtc-btn--ghost { border-color: rgba(255,255,255,.55); color: var(--white); }
.rtc-btn--ghost:hover { background: rgba(255,255,255,.1); }
.rtc-btn--line { border-color: var(--blue); color: var(--blue); background: transparent; }
.rtc-btn--line:hover { background: var(--blue-s); }

.rtc-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
.rtc-header__inner {
  width: min(1180px, calc(100% - 24px));
  margin: auto;
  min-height: var(--header);
  display: flex;
  align-items: center;
  gap: 16px;
}
.rtc-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.rtc-logo img { width: 52px; height: 52px; object-fit: contain; }
.rtc-logo strong { display: block; font-family: var(--display); font-size: 1.15rem; letter-spacing: 0.04em; }
.rtc-logo em {
  display: block;
  font-style: normal;
  color: var(--muted);
  font-size: 0.72rem;
  max-width: 220px;
  line-height: 1.3;
}
.rtc-nav { margin-left: auto; flex-shrink: 0; }
.rtc-nav__list { display: flex; align-items: center; gap: 2px; flex-wrap: nowrap; }
.rtc-nav__list > li { position: relative; flex-shrink: 0; }
.rtc-nav__list > li > a {
  display: block;
  padding: 10px 9px;
  font-family: var(--display);
  font-weight: 650;
  font-size: 0.88rem;
  white-space: nowrap;
}
.rtc-nav__list > li.is-active > a,
.rtc-nav__list > li > a:hover { color: var(--blue); }
.rtc-nav__list > li.is-cta > a {
  background: var(--blue);
  color: var(--white) !important;
  border-radius: 999px;
  padding-inline: 16px;
}
.rtc-sub {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px;
  box-shadow: var(--shadow);
}
.has-sub:hover .rtc-sub,
.has-sub:focus-within .rtc-sub { display: block; }
.rtc-sub a { display: block; padding: 10px 12px; border-radius: 8px; }
.rtc-sub a:hover { background: var(--blue-s); color: var(--blue); }
.rtc-header__tools { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.rtc-lang { font-family: var(--display); font-weight: 800; font-size: 0.85rem; white-space: nowrap; }
.rtc-lang a { padding: 4px; color: var(--muted); }
.rtc-lang a.is-active { color: var(--blue); }
.rtc-phone-link {
  font-family: var(--display);
  font-weight: 700;
  color: var(--blue);
  white-space: nowrap;
}
.rtc-burger {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: none;
  padding: 10px;
}
.rtc-burger span {
  display: block;
  height: 2px;
  background: var(--ink);
  margin: 6px 0;
}

.rtc-hero {
  position: relative;
  min-height: min(86vh, 820px);
  color: var(--white);
  overflow: hidden;
  display: grid;
  align-items: end;
}
.rtc-hero__slides,
.rtc-hero__slide,
.rtc-hero__overlay { position: absolute; inset: 0; }
.rtc-hero__slide { opacity: 0; transition: opacity 1s ease; }
.rtc-hero__slide.is-active { opacity: 1; }
.rtc-hero__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rtc-hero__overlay {
  background: linear-gradient(180deg, rgba(12,18,32,.18) 0%, rgba(12,18,32,.58) 68%);
}
.rtc-hero__content {
  position: relative;
  z-index: 2;
  padding: 0 0 72px;
  text-shadow: 0 2px 16px rgba(0,0,0,.45);
}
.rtc-hero .rtc-lead { color: rgba(255,255,255,.92); }
.rtc-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.rtc-trust { background: var(--blue); color: var(--white); }
.rtc-trust__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 22px 0;
  text-align: center;
  font-family: var(--display);
  font-weight: 700;
}
.rtc-trust p { margin: 0; }

.rtc-cards {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, 1fr);
}
.rtc-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: 0 8px 24px rgba(20,24,31,.04);
  transition: transform .2s ease, box-shadow .2s ease;
}
.rtc-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.rtc-ico {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  color: var(--blue);
  margin-bottom: 12px;
}
.rtc-ico svg { width: 100%; height: 100%; display: block; }
.rtc-card p { color: var(--muted); margin: 0; }

.rtc-sol {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.rtc-sol__card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 100%;
  transition: transform .2s ease, box-shadow .2s ease;
}
.rtc-sol__card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.rtc-sol__pic {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 180px;
  padding: 14px 12px 8px;
  background: linear-gradient(180deg, #c5cedb 0%, #d8dee8 100%);
}
.rtc-sol__pic img {
  max-height: 150px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}
.rtc-sol__pic--photo {
  padding: 0;
  background: #d8dde4;
}
.rtc-sol__pic--photo img {
  width: 100%;
  height: 100%;
  max-height: none;
  object-fit: cover;
}
.rtc-sol__body {
  display: grid;
  gap: 6px;
  padding: 14px 16px 18px;
  flex: 1;
}
.rtc-sol__body strong {
  font-family: var(--display);
  font-size: 1.02rem;
  line-height: 1.25;
}
.rtc-sol__body em {
  color: var(--muted);
  font-style: normal;
  font-size: .92rem;
  line-height: 1.4;
}

.rtc-projects {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.rtc-project {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.rtc-project__img {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.rtc-project__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.rtc-project:hover img { transform: scale(1.05); }
.rtc-project__meta { padding: 14px 16px 18px; display: grid; gap: 4px; }
.rtc-project__meta small { color: var(--blue); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: .72rem; }
.rtc-project__meta em { color: var(--muted); font-style: normal; font-size: .92rem; }

.rtc-materials {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.rtc-material {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 100%;
  transition: transform .2s ease, box-shadow .2s ease;
}
.rtc-material:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.rtc-material__pic {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 180px;
  padding: 14px 12px 8px;
  background: linear-gradient(180deg, #c5cedb 0%, #d8dee8 100%);
}
.rtc-material__pic img {
  max-height: 150px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}
.rtc-material__body {
  display: grid;
  gap: 6px;
  padding: 14px 16px 18px;
  flex: 1;
}
.rtc-material h3 {
  font-family: var(--display);
  font-size: 1.15rem;
  line-height: 1.25;
}
.rtc-material p { color: var(--muted); font-size: .92rem; line-height: 1.4; }

.rtc-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 18px;
}
.rtc-steps li {
  padding: 8px 4px 16px;
  border-top: 2px solid rgba(255,255,255,.18);
}
.rtc-steps span {
  display: block;
  font-family: var(--display);
  font-weight: 800;
  color: #7ea0e0;
  margin-bottom: 8px;
}

.rtc-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.rtc-checks { display: grid; gap: 12px; }
.rtc-checks li,
.rtc-list-grid li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.rtc-checks svg,
.rtc-list-grid svg {
  width: 20px;
  height: 20px;
  color: var(--blue);
  flex-shrink: 0;
  margin-top: 3px;
}

.rtc-types {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.rtc-types a {
  display: block;
  padding: 22px 16px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  font-family: var(--display);
  font-weight: 700;
}
.rtc-types a:hover { border-color: var(--blue); color: var(--blue); }

.rtc-cta {
  background: var(--blue);
  color: var(--white);
  padding: 56px 0;
}
.rtc-cta__inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}
.rtc-cta p { margin: 0; max-width: 40rem; color: #d5e0f5; }

.rtc-footer { background: var(--dark); color: #d5d8de; padding-top: 56px; }
.rtc-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr .8fr 1fr;
  gap: 32px;
  padding-bottom: 40px;
}
.rtc-footer h2 { color: var(--white); font-size: 1rem; letter-spacing: .08em; text-transform: uppercase; }
.rtc-footer a:hover { color: var(--white); }
.rtc-tag { color: #8ea4d4; font-weight: 700; }
.rtc-logo--foot { margin-bottom: 16px; color: var(--white); }
.rtc-contact-list { display: grid; gap: 12px; }
.rtc-contact-list li { display: flex; gap: 10px; align-items: flex-start; }
.rtc-contact-list svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 4px; color: #8ea4d4; }
.rtc-footer__bar { border-top: 1px solid rgba(255,255,255,.08); }
.rtc-footer__bar-inner {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0 88px;
  font-size: .92rem;
}
.rtc-footer__bar-inner a { margin-left: 16px; }

.rtc-mobile-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: none;
  grid-template-columns: 1fr 1fr 1fr;
  background: var(--white);
  border-top: 1px solid var(--line);
}
.rtc-mobile-cta a {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 8px 4px 10px;
  font-size: .72rem;
  font-family: var(--display);
  font-weight: 700;
}
.rtc-mobile-cta svg { width: 20px; height: 20px; }
.rtc-mobile-cta .is-primary { background: var(--blue); color: var(--white); }

.rtc-pagehead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: var(--white);
  padding: 80px 0 60px;
  background:
    radial-gradient(1100px 460px at 86% 12%, rgba(62, 110, 210, .5), transparent 58%),
    linear-gradient(115deg, #0c1426 0%, #16325f 52%, #1e4ba8 100%);
  box-shadow: inset 0 -3px 0 var(--blue);
}
.rtc-pagehead::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../img/pagehead.webp") 68% 42% / cover no-repeat;
  opacity: .82;
  filter: saturate(.7) contrast(1.12) brightness(.92);
  mix-blend-mode: luminosity;
  -webkit-mask-image: linear-gradient(100deg, transparent 12%, #000 48%);
  mask-image: linear-gradient(100deg, transparent 12%, #000 48%);
  pointer-events: none;
}
.rtc-pagehead::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(10, 16, 28, .82) 0%, rgba(12, 24, 48, .48) 34%, rgba(16, 36, 72, .16) 68%, transparent 100%);
  pointer-events: none;
}
.rtc-pagehead .rtc-wrap {
  position: relative;
  z-index: 1;
}
.rtc-pagehead .rtc-kicker { color: #c3d4f4; }
.rtc-pagehead .rtc-lead { color: rgba(232, 238, 248, .82); }

.rtc-seq {
  position: relative;
  height: 240vh;
  background: var(--white);
}
.rtc-seq.is-static { height: auto; }
.rtc-seq__pin {
  position: sticky;
  top: var(--header);
  z-index: 2;
  height: calc(100dvh - var(--header));
  min-height: 480px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.rtc-seq.is-static .rtc-seq__pin {
  position: relative;
  top: 0;
  height: auto;
  min-height: 0;
  padding: 24px 16px 48px;
}
.rtc-seq__img {
  width: min(980px, 92vw);
  max-height: min(72dvh, 680px);
  height: auto;
  object-fit: contain;
  margin: 0 auto;
  user-select: none;
  pointer-events: none;
}
.rtc-seq__notes {
  position: absolute;
  inset: 18px 8%;
  pointer-events: none;
}
.rtc-seq__note {
  position: absolute;
  max-width: 220px;
  padding: 10px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 10px 28px rgba(20, 24, 31, 0.08);
  color: var(--ink);
  font-family: var(--display);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.35;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.rtc-seq__note.is-on,
.rtc-seq.is-static .rtc-seq__note {
  opacity: 1;
  transform: none;
}
.rtc-seq__note--top-left { top: 6%; left: 0; }
.rtc-seq__note--bottom-left { bottom: 14%; left: 0; }
.rtc-seq__note--top-right { top: 10%; right: 0; left: auto; }
.rtc-seq__note--bottom-right { bottom: 18%; right: 0; left: auto; }
.rtc-seq__hint {
  position: absolute;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  margin: 0;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--blue-s);
  color: var(--blue-d);
  font-family: var(--display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 1;
  transition: opacity 0.3s ease;
}
.rtc-seq__hint.is-gone,
.rtc-seq.is-static .rtc-seq__hint { opacity: 0; }

.rtc-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.rtc-chip {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font-family: var(--display);
  font-weight: 700;
}
.rtc-chip.is-active { background: var(--blue); color: var(--white); border-color: var(--blue); }

.rtc-real__hero {
  position: relative;
  min-height: 52vh;
  color: var(--white);
  display: grid;
  align-items: end;
}
.rtc-real__hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.rtc-real__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(12,18,32,.82));
}
.rtc-real__hero-copy { position: relative; z-index: 1; padding-bottom: 40px; }
.rtc-back { display: inline-block; margin-bottom: 12px; color: #c9d7f2; }
.rtc-real__intro { padding: 48px 0 0; display: grid; gap: 24px; }
.rtc-facts { display: flex; gap: 32px; }
.rtc-facts dt { color: var(--muted); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; }
.rtc-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.rtc-gallery figure { margin: 0; }
.rtc-gallery figure .rtc-zoom { display: block; width: 100%; }
.rtc-gallery figcaption {
  margin-top: 6px;
  font-size: .78rem;
  color: var(--muted);
}
.rtc-zoom {
  border: 0;
  padding: 0;
  background: none;
  cursor: zoom-in;
  overflow: hidden;
  border-radius: 10px;
}
.rtc-zoom img { width: 100%; height: 240px; object-fit: cover; }
.rtc-ba { display: grid; gap: 36px; }
.rtc-ba__pair { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.rtc-ba figcaption { margin-top: 8px; font-weight: 700; color: var(--blue); }
.rtc-ba-block { margin-bottom: 48px; }
.rtc-ba-block h2 { margin-bottom: 20px; }
.rtc-ba--featured .rtc-zoom,
.rtc-ba-collage .rtc-zoom {
  display: block;
  width: 100%;
  background: var(--bg);
}
.rtc-ba--featured .rtc-zoom img {
  width: 100%;
  height: min(70vh, 680px);
  object-fit: contain;
  background: var(--bg);
}
.rtc-ba-collage {
  margin: 0;
  max-width: 960px;
}
.rtc-ba-collage .rtc-zoom img {
  width: 100%;
  height: auto;
  max-height: min(78vh, 820px);
  object-fit: contain;
  background: var(--bg);
}
.rtc-videos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 560px));
  justify-content: center;
  gap: 28px 32px;
  margin-top: 32px;
}
.rtc-video {
  margin: 0;
  width: 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.rtc-video figcaption {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 650;
  text-align: center;
}
.rtc-video video {
  width: 100%;
  height: min(70dvh, 560px);
  object-fit: contain;
  border-radius: var(--radius);
  background: #0b0d12;
  box-shadow: var(--shadow);
}
.rtc-pager {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0 8px;
}
.rtc-pager a { display: grid; }
.rtc-pager strong { display: block; }

.rtc-form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.rtc-form label { display: grid; gap: 8px; font-weight: 650; }
.rtc-form .is-full { grid-column: 1 / -1; }
.rtc-form input:not([type="checkbox"]):not([type="file"]):not([type="hidden"]),
.rtc-form select,
.rtc-form textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  background: var(--white);
  font-size: 1rem;
  line-height: 1.4;
}
.rtc-form textarea {
  min-height: 140px;
  resize: vertical;
}
.rtc-form select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%235c6168' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 42px;
}
.rtc-form input[type="file"] {
  width: 100%;
  min-height: 52px;
  padding: 12px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  background: var(--bg);
}
.rtc-form .rtc-btn { margin-top: 12px; }
.rtc-check { display: flex; flex-direction: row; align-items: flex-start; gap: 10px; font-weight: 400; }
.rtc-check input {
  width: 22px;
  height: 22px;
  margin-top: 2px;
  flex-shrink: 0;
}
.rtc-check label {
  font-weight: 400;
  line-height: 1.45;
  cursor: pointer;
}
.rtc-check a {
  position: relative;
  z-index: 2;
}
.rtc-notice { padding: 12px 14px; border-radius: 10px; }
.rtc-notice--ok { background: #e8f6ec; }
.rtc-notice--err { background: #fdecea; }
.rtc-contact-layout { display: grid; grid-template-columns: 1.4fr .8fr; gap: 40px; }
.rtc-aside {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 28px;
  height: fit-content;
}
.rtc-aside__btns { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0; }

.rtc-brands {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.rtc-brands a {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--white);
}
.rtc-brands a:hover { border-color: var(--blue); }
.rtc-brands span { display: block; color: var(--muted); margin-top: 6px; }

.rtc-swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(92px, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}
.rtc-swatches span {
  display: block;
  height: 72px;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.rtc-swatches figcaption { margin-top: 8px; font-size: .85rem; text-align: center; }
.rtc-list-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 24px;
  margin-bottom: 32px;
}
.rtc-note {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 28px;
}
.rtc-faq details {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.rtc-faq summary { cursor: pointer; font-family: var(--display); font-weight: 700; font-size: 1.1rem; }
.rtc-faq p { color: var(--muted); }
.rtc-prose { max-width: 46rem; }
.rtc-prose p { color: var(--muted); font-size: 1.08rem; line-height: 1.7; }
.rtc-prose h2 {
  margin: 2rem 0 0.55rem;
  font-size: 1.25rem;
}
.rtc-prose h2:first-child { margin-top: 0; }
.rtc-prose a,
.rtc-check a {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.rtc-lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(10,12,18,.92);
  display: grid;
  place-items: center;
  padding: 24px;
}
.rtc-lightbox[hidden] { display: none !important; }
.rtc-lightbox img { max-height: 90vh; max-width: 92vw; object-fit: contain; }
.rtc-lightbox__close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: 0;
  color: var(--white);
  font-size: 2.4rem;
  cursor: pointer;
}

.rtc-cookie {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.rtc-cookie[hidden] { display: none !important; }
.rtc-empty { text-align: center; color: var(--muted); }
.rtc-catgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}
.rtc-cat {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 100%;
  transition: transform .2s ease, box-shadow .2s ease;
}
.rtc-cat:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.rtc-cat__pic {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: 18px 14px 8px;
  background: linear-gradient(180deg, #c5cedb 0%, #d8dee8 100%);
}
.rtc-cat__pic img {
  max-height: 190px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}
.rtc-cat__meta { padding: 12px 16px 18px; display: grid; gap: 4px; }
.rtc-cat__meta strong { font-size: 1.05rem; }
.rtc-cat__meta em { color: var(--muted); font-style: normal; font-size: .92rem; }
.rtc-pagehead a { color: inherit; }

.rtc-systems {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.rtc-system {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}
.rtc-system__cut {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  padding: 22px 16px 10px;
  background: linear-gradient(180deg, #c5cedb 0%, #d8dee8 100%);
}
.rtc-system__cut img {
  max-height: 250px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  transition: transform .35s ease;
}
.rtc-system:hover img { transform: scale(1.05); }
.rtc-system__cut--photo {
  padding: 0;
  min-height: 220px;
  background: #d8dde4;
}
.rtc-system__cut--photo img {
  width: 100%;
  height: 220px;
  max-height: none;
  object-fit: cover;
}
.rtc-system:hover .rtc-system__cut--photo img { transform: scale(1.03); }
.rtc-system__meta { padding: 12px 16px 18px; display: grid; gap: 3px; }
.rtc-system__meta small { color: var(--blue); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: .72rem; }
.rtc-system__meta em { color: var(--muted); font-style: normal; font-size: .92rem; }

.rtc-prod__hero { padding: 36px 0 8px; background: var(--bg); }
.rtc-prod__grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.rtc-prod__cut {
  margin: 0;
  background: #eef1f5;
  border-radius: var(--radius);
  padding: 28px;
  min-height: 520px;
  display: grid;
  place-items: center;
}
.rtc-prod__cut img { max-height: 560px; width: auto; max-width: 100%; }
.rtc-prod__cut--photo {
  padding: 0;
  min-height: 420px;
  overflow: hidden;
}
.rtc-prod__cut--photo img {
  width: 100%;
  height: 100%;
  max-height: 560px;
  object-fit: cover;
}
.rtc-prod__copy .rtc-lead { margin-bottom: 20px; }
.rtc-back--dark { color: var(--blue); }
.rtc-facts--prod { flex-wrap: wrap; gap: 20px 32px; margin: 8px 0 16px; }
.rtc-prod__opts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}
.rtc-prod__opts li {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: .88rem;
  font-weight: 600;
}
.rtc-prod .rtc-note,
.rtc-catalog .rtc-note {
  padding: 14px 16px;
  font-size: .95rem;
  color: var(--muted);
  margin: 16px 0 24px;
}
.rtc-catalog .rtc-note { margin-top: 36px; }

.rtc-project[hidden],
.rtc-system[hidden] { display: none !important; }

@media (max-width: 1200px) {
  .rtc-logo em { display: none; }
}

@media (max-width: 980px) {
  .rtc-cards,
  .rtc-projects,
  .rtc-systems,
  .rtc-catgrid,
  .rtc-sol,
  .rtc-prod__grid,
  .rtc-materials,
  .rtc-steps,
  .rtc-types,
  .rtc-trust__grid,
  .rtc-footer__grid,
  .rtc-split,
  .rtc-form__grid,
  .rtc-gallery,
  .rtc-list-grid,
  .rtc-brands,
  .rtc-swatches { grid-template-columns: 1fr 1fr; }
  .rtc-head--row,
  .rtc-cta__inner,
  .rtc-footer__bar-inner { flex-direction: column; align-items: flex-start; }
  .rtc-logo em, .rtc-phone-link { display: none; }
  .rtc-header__inner { justify-content: space-between; }
  .rtc-header__tools { margin-left: auto; }
  .rtc-burger { display: block; }
  .rtc-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: 12px 16px 20px;
  }
  .rtc-nav.is-open { display: block; }
  .rtc-nav__list { flex-direction: column; align-items: stretch; }
  .rtc-sub { position: static; display: block; box-shadow: none; border: 0; }
  .rtc-mobile-cta { display: grid; }
  body.has-mobile-cta { padding-bottom: var(--cta); }
  .rtc-cookie { bottom: 76px; }
  body.has-mobile-cta .rtc-seq__pin {
    height: calc(100dvh - var(--header) - var(--cta));
  }
  .rtc-seq__notes { inset: 12px 4%; }
  .rtc-seq__note { max-width: 160px; font-size: 0.78rem; padding: 8px 10px; }
  .rtc-contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .rtc-pagehead {
    padding: 48px 0 36px;
  }
  .rtc-pagehead::before {
    opacity: .55;
    mix-blend-mode: luminosity;
    -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
    mask-image: linear-gradient(180deg, #000 0%, transparent 92%);
  }
  .rtc-pagehead::after {
    background: linear-gradient(180deg, rgba(10, 16, 28, .28) 0%, rgba(10, 16, 28, .78) 100%);
  }
  .rtc-cards,
  .rtc-projects,
  .rtc-systems,
  .rtc-catgrid,
  .rtc-sol,
  .rtc-prod__grid,
  .rtc-materials,
  .rtc-steps,
  .rtc-types,
  .rtc-trust__grid,
  .rtc-gallery,
  .rtc-ba__pair,
  .rtc-swatches,
  .rtc-list-grid,
  .rtc-brands,
  .rtc-form__grid { grid-template-columns: 1fr; }
  .rtc-form__grid { gap: 18px; }
  .rtc-form input:not([type="checkbox"]):not([type="file"]):not([type="hidden"]),
  .rtc-form select,
  .rtc-form textarea {
    min-height: 52px;
    padding: 16px;
    font-size: 16px;
  }
  .rtc-form textarea { min-height: 160px; }
  .rtc-form .rtc-btn { width: 100%; min-height: 52px; }
  .rtc-hero { min-height: 78vh; }
  .rtc-cookie { flex-direction: column; align-items: stretch; bottom: 76px; }
  .rtc-zoom img { height: 200px; }
  .rtc-seq { height: 200vh; }
  .rtc-seq__notes { display: none; }
  .rtc-seq__img { max-height: min(64dvh, 520px); }
  .rtc-video video { height: min(56dvh, 480px); }
}