.site_header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 0.82rem clamp(1rem, 2.8vw, 2.8rem);
  z-index: 60;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.74), rgba(0, 0, 0, 0));
  transition: background-color 0.22s ease, border-color 0.22s ease;
}

.site_header.is_scrolled {
  background: rgba(5, 6, 8, 0.92);
  border-bottom: 1px solid var(--line-soft);
}

.logo {
  width: clamp(114px, 12vw, 148px);
  height: auto;
  display: block;
}

.site_nav {
  display: block;
}

.nav_toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  min-height: 40px;
  padding: 0.44rem 0.64rem;
  border: 1px solid var(--line-light);
  background: rgba(0, 0, 0, 0.35);
  color: var(--white-100);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  cursor: pointer;
}

.nav_toggle_icon {
  width: 16px;
  height: 2px;
  background: currentcolor;
  position: relative;
  display: inline-block;
}

.nav_toggle_icon::before,
.nav_toggle_icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentcolor;
}

.nav_toggle_icon::before {
  top: -5px;
}

.nav_toggle_icon::after {
  top: 5px;
}

.site_header.nav_open .nav_toggle_icon {
  background: transparent;
}

.site_header.nav_open .nav_toggle_icon::before {
  top: 0;
  transform: rotate(45deg);
}

.site_header.nav_open .nav_toggle_icon::after {
  top: 0;
  transform: rotate(-45deg);
}

.nav_list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: clamp(0.72rem, 1.3vw, 1.08rem);
}

.nav_list a {
  font-weight: 600;
  font-size: clamp(0.74rem, 0.95vw, 0.82rem);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding-bottom: 0.16rem;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.panel {
  position: relative;
  min-height: var(--section-min-h);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: clamp(3.8rem, 9vh, 6rem) clamp(1rem, 3vw, 3rem);
}

.panel_content {
  width: min(var(--shell-width), 100%);
  margin: 0 auto;
  display: grid;
  gap: 1.15rem;
}

.panel_story .panel_content {
  width: min(var(--content-width), 100%);
  margin-left: 0;
  margin-right: auto;
  text-align: left;
}

.panel_center .panel_content {
  text-align: center;
  width: min(900px, 100%);
}

.service_grid,
.project_grid,
.testimonial_grid {
  display: grid;
  gap: 1rem;
}

.service_grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project_grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.testimonial_grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.panel_story .service_grid,
.panel_story .project_grid {
  grid-template-columns: 1fr;
}

.business_facts {
  width: min(980px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  text-align: left;
}

.business_facts div {
  border: 1px solid var(--line-soft);
  background: rgba(9, 11, 15, 0.74);
  padding: 1rem 1.05rem;
  display: grid;
  gap: 0.35rem;
}

.contact_layout {
  grid-template-columns: minmax(240px, 450px) minmax(0, 600px);
  justify-content: space-between;
  align-items: start;
  gap: clamp(1.25rem, 2vw, 2.25rem);
}

.contact_direct {
  display: grid;
  gap: 1rem;
}

.contact_form {
  display: grid;
  gap: 0.9rem;
  padding: 1.2rem;
  border: 1px solid var(--line-soft);
  background: rgba(5, 7, 10, 0.76);
}

.form_row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.site_footer {
  padding: 1rem 1rem;
  text-align: center;
  background: #020305;
  border-top: 1px solid var(--line-soft);
}

.footer_inner {
  width: min(var(--shell-width), 100%);
  margin: 0 auto;
  display: grid;
  gap: 0.74rem;
}

.footer_links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.62rem 0.95rem;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.mobile_cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  display: none;
  z-index: 55;
  border-top: 1px solid var(--line-soft);
  padding-bottom: env(safe-area-inset-bottom);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.mobile_cta.is_hidden {
  transform: translateY(calc(100% + env(safe-area-inset-bottom)));
  opacity: 0;
  pointer-events: none;
}

.mobile_cta a {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.74rem;
}

.subpage_main {
  min-height: 100vh;
  padding: calc(var(--header-height) + 1.5rem) clamp(1rem, 3.6vw, 4rem) 2rem;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.86)),
    radial-gradient(circle at 85% 15%, rgba(242, 244, 248, 0.08), transparent 34%),
    linear-gradient(150deg, var(--black-95), var(--black-100));
}

.subpage_shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 1.1rem;
}

.detail_grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.doc_main {
  min-height: 100vh;
  padding: calc(var(--header-height) + 1.5rem) clamp(1rem, 3.2vw, 3rem) 2rem;
  background: linear-gradient(180deg, var(--black-90) 0%, var(--black-100) 100%);
  color: var(--white-90);
}

.doc_shell {
  width: min(940px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}