/* =========================================================
   NTB · Комплексный инжиниринг — corporate site styles
   Brand:
     Green   #44CF79
     Teal    #13B4BF
     Dark    #1F222E
     Black   #000000
     White   #FFFFFF
   Type: Inter Tight (display) + Manrope (body) — wide geometric kirillic
   ========================================================= */

:root {
  --c-green: #44CF79;
  --c-teal:  #13B4BF;
  --c-dark:  #1F222E;
  --c-black: #000000;
  --c-white: #FFFFFF;

  --c-green-15: rgba(68, 207, 121, 0.15);
  --c-teal-15:  rgba(19, 180, 191, 0.15);
  --c-green-08: rgba(68, 207, 121, 0.08);
  --c-teal-08:  rgba(19, 180, 191, 0.08);

  /* dark surfaces */
  --bg:        var(--c-dark);
  --bg-2:      #15171F;
  --bg-3:      #0E1016;
  --fg:        var(--c-white);
  --fg-muted:  rgba(255,255,255,.66);
  --fg-dim:    rgba(255,255,255,.44);
  --line:      rgba(255,255,255,.10);
  --line-2:    rgba(255,255,255,.18);
  --accent:    var(--c-green);
  --accent-2:  var(--c-teal);

  /* type */
  --font-display: "Inter Tight", "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body:    "Manrope", "Inter Tight", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --container: 1240px;
  --wide-container: 1680px;
  --gutter: clamp(20px, 4vw, 56px);
  --radius: 4px;

  --shadow-1: 0 1px 0 0 rgba(255,255,255,.04) inset, 0 30px 60px -20px rgba(0,0,0,.5);
}

[data-theme="light"] {
  --bg:        #F5F6F7;
  --bg-2:      #FFFFFF;
  --bg-3:      #ECEEF1;
  --fg:        #0E1016;
  --fg-muted:  rgba(14,16,22,.66);
  --fg-dim:    rgba(14,16,22,.44);
  --line:      rgba(14,16,22,.10);
  --line-2:    rgba(14,16,22,.20);
  --shadow-1: 0 1px 0 0 rgba(255,255,255,.9) inset, 0 24px 54px -28px rgba(31,34,46,.32);
}

/* base reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-display); font-weight: 800; letter-spacing: -0.01em; line-height: 1.05; }

.skip {
  position: absolute; left: -9999px; top: 0; padding: 12px 16px;
  background: var(--c-green); color: #000; font-weight: 700; z-index: 999;
}
.skip:focus { left: 16px; top: 16px; outline: 2px solid #000; }

/* container */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ============= NAV ============= */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(14px, 1.6vw, 22px);
  min-height: 76px;
}
.nav__inner.container {
  max-width: var(--wide-container);
}
.brand {
  display: inline-flex; align-items: center;
}
.brand__logo {
  display: block;
  width: clamp(112px, 10vw, 142px);
  height: auto;
}
.brand__logo--positive {
  display: none;
}
[data-theme="light"] .brand__logo--inverse {
  display: none;
}
[data-theme="light"] .brand__logo--positive {
  display: block;
}

.nav__links {
  display: flex; gap: clamp(16px, 1.6vw, 24px); justify-self: center;
  font-size: 14px; font-weight: 500;
  white-space: nowrap;
}
.nav__links a {
  color: var(--fg-muted);
  position: relative; padding: 6px 0;
  transition: color .2s ease;
  white-space: nowrap;
}
.nav__links a:hover { color: var(--fg); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--accent);
  transition: width .25s ease;
}
.nav__links a:hover::after { width: 100%; }

.nav__actions { display: inline-flex; align-items: center; gap: 12px; white-space: nowrap; }

.theme-toggle {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; font-weight: 600; letter-spacing: .04em;
  color: var(--fg-muted);
  padding: 9px 12px; border: 1px solid var(--line-2);
  border-radius: 999px;
  transition: color .2s ease, border-color .2s ease;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--fg-dim); }
.theme-toggle__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 18%, transparent);
}

.nav__burger {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line-2); border-radius: 6px;
  position: relative;
}
.nav__burger span {
  position: absolute; left: 11px; right: 11px; height: 2px; background: var(--fg);
  transition: transform .2s ease, opacity .2s ease, top .2s ease;
}
.nav__burger span:nth-child(1) { top: 14px; }
.nav__burger span:nth-child(2) { top: 21px; }
.nav__burger span:nth-child(3) { top: 28px; }
.nav__burger[aria-expanded="true"] span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

@media (max-width: 1180px) {
  .nav__links { display: none; }
  .nav__actions .btn { display: none; }
  .nav__actions .theme-toggle { display: none; }
  .nav__burger { display: inline-block; }
  .nav__inner { grid-template-columns: auto 1fr auto; }
}

.nav.is-open .nav__links {
  display: flex; flex-direction: column;
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--bg-2); border-bottom: 1px solid var(--line);
  padding: 16px var(--gutter) 24px; gap: 14px;
}
.nav.is-open .nav__links a { font-size: 18px; padding: 10px 0; border-bottom: 1px solid var(--line); }

/* ============= BUTTONS ============= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 12px 18px;
  font-family: var(--font-display);
  font-weight: 700; font-size: 14px; letter-spacing: .02em;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn--lg { padding: 16px 26px; font-size: 15px; }
.btn--accent {
  background: var(--c-green);
  color: #08110B;
  border-color: var(--c-green);
}
.btn--accent:hover { background: #5BE08E; border-color: #5BE08E; transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line-2);
}
.btn--ghost:hover { border-color: var(--fg); }

/* ============= TYPE HELPERS ============= */
.eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--fg-muted); font-weight: 600;
  margin-bottom: 28px;
}
.eyebrow__bar {
  width: 36px; height: 2px; background: var(--accent);
}
.eyebrow--light { color: rgba(255,255,255,.78); }
.eyebrow--light .eyebrow__bar { background: var(--c-green); }

.section__title {
  font-size: clamp(30px, 4.4vw, 60px);
  letter-spacing: -0.025em;
  line-height: 1.02;
}
.section__title--light { color: #fff; }
.t-muted { color: var(--fg-muted); font-weight: 500; }
.t-accent { color: var(--c-green); }

.lede {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--fg-muted);
  max-width: 56ch;
  margin: 24px 0 16px;
}

/* ============= HERO ============= */
.hero {
  position: relative;
  min-height: clamp(620px, 92vh, 880px);
  isolation: isolate;
  overflow: hidden;
  display: flex; align-items: flex-end;
  padding-top: 80px; padding-bottom: 80px;
  border-bottom: 1px solid var(--line);
  background: var(--c-black);
  color: #fff;
}
.hero__media { position: absolute; inset: 0; z-index: -1; }
.hero__media img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) contrast(1.05) brightness(.7);
}
.hero__overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(0,0,0,.50) 0%, rgba(0,0,0,.20) 35%, rgba(0,0,0,.85) 95%),
    linear-gradient(105deg, rgba(31,34,46,.85) 0%, rgba(31,34,46,.10) 55%, rgba(0,0,0,0) 100%);
}
.hero__diag {
  position: absolute;
  right: max(32px, calc((100vw - var(--wide-container)) / 2));
  bottom: 28%;
  width: 44vw; height: 44vw;
  max-width: 620px; max-height: 620px;
  background: linear-gradient(135deg, var(--c-green) 0%, var(--c-teal) 100%);
  clip-path: polygon(30% 100%, 100% 100%, 100% 30%);
  opacity: .55;
  mix-blend-mode: normal;
  pointer-events: none;
}
@media (max-width: 1024px) { .hero__diag { display: none; } }

.hero__inner { position: relative; }
.hero .eyebrow { color: rgba(255,255,255,.85); }
.hero .eyebrow__bar { background: var(--c-green); }

.hero__title {
  font-size: clamp(34px, 5.6vw, 78px);
  letter-spacing: -0.025em;
  max-width: 18ch;
  margin: 0 0 22px;
  color: #fff;
  text-wrap: balance;
}
.hero__title-accent { color: var(--c-green); }
.hero__lede {
  max-width: 52ch;
  font-size: clamp(15px, 1.3vw, 18px);
  color: rgba(255,255,255,.85);
  margin: 0 0 32px;
}
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero__metrics {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 64px;
  border-top: 1px solid rgba(255,255,255,.18);
  border-left: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.18);
}
.hero__metrics li {
  background: rgba(0,0,0,.55);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  padding: 22px 22px 20px;
  display: flex; flex-direction: column; gap: 6px;
  border-right: 1px solid rgba(255,255,255,.18);
  border-bottom: 1px solid rgba(255,255,255,.18);
}
.metric__value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 2.6vw, 38px);
  letter-spacing: -0.02em; line-height: 1;
  color: #fff;
}
.metric__label {
  font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  color: rgba(255,255,255,.65);
}
@media (max-width: 720px) {
  .hero__metrics { grid-template-columns: repeat(2, 1fr); margin-top: 40px; }
}

.scroll-hint {
  position: absolute;
  right: max(28px, calc((100vw - var(--wide-container)) / 2 + 28px));
  bottom: 28px; z-index: 1;
  display: flex; align-items: center; gap: 10px;
  font-size: 11px; letter-spacing: .2em; text-transform: uppercase;
  color: rgba(255,255,255,.7);
}
.scroll-hint::after {
  content: ""; width: 36px; height: 1px; background: rgba(255,255,255,.7);
  animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint { 0%,100% { transform: scaleX(.4); } 50% { transform: scaleX(1); } }
@media (max-width: 720px) { .scroll-hint { display: none; } }

/* ============= SECTIONS ============= */
.section {
  position: relative;
  padding: clamp(72px, 9vw, 140px) 0;
  border-bottom: 1px solid var(--line);
}
.section--dark {
  background: #0E1016;
  color: #fff;
  border-bottom-color: rgba(255,255,255,.08);
}
.section--dark .t-muted { color: rgba(255,255,255,.7); }
.section--construction {
  background: var(--c-black);
  color: #fff;
  border-bottom-color: rgba(255,255,255,.08);
}

[data-theme="light"] .section--dark,
[data-theme="light"] .section--construction {
  background: #F5F6F7;
  color: var(--fg);
  border-bottom-color: var(--line);
}

.section__head { max-width: 880px; margin-bottom: 56px; }
.section__head--split {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: end;
  max-width: none;
}
@media (max-width: 900px) { .section__head--split { grid-template-columns: 1fr; } }
.section__sub {
  font-size: clamp(15px, 1.2vw, 17px);
  color: var(--fg-muted);
  max-width: 60ch;
  margin: 24px 0 0;
}
.section__sub--light { color: rgba(255,255,255,.75); }

/* ============= TWO-COL GRID ============= */
.grid-2 {
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(40px, 6vw, 96px);
  align-items: start;
}
.grid-2--reverse .grid-2__copy { order: 2; }
.grid-2--reverse .grid-2__media { order: 1; }
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-2--reverse .grid-2__copy { order: 2; }
  .grid-2--reverse .grid-2__media { order: 1; }
}

/* media frame with diagonal cut — anti-AI signature */
.grid-2__media { position: relative; }
.media-frame {
  position: relative; aspect-ratio: 4/3; overflow: hidden;
  background: var(--bg-3);
  border: 1px solid var(--line);
}
.media-frame img {
  width: 100%; height: 100%; object-fit: cover;
  filter: grayscale(1) contrast(1.06);
}
.media-frame--diag {
  clip-path: polygon(0 0, 100% 0, 100% 88%, 92% 100%, 0 100%);
}
.media-frame--diag-rev {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 12%, 8% 0);
}
.figure__tag {
  position: absolute; left: -16px; bottom: -22px;
  background: var(--c-green);
  color: #08110B;
  padding: 14px 18px;
  display: inline-flex; align-items: center; gap: 14px;
  box-shadow: var(--shadow-1);
}
.figure__tag--right { left: auto; right: -16px; background: var(--c-teal); color: #03191B; }
.figure__tag-num {
  font-family: var(--font-display); font-weight: 900; font-size: 22px; letter-spacing: -0.02em;
}
.figure__tag-text { font-size: 12px; line-height: 1.35; font-weight: 600; }
@media (max-width: 540px) {
  .figure__tag { left: 12px; bottom: 12px; }
  .figure__tag--right { right: 12px; left: auto; }
}

/* bullets */
.bullets {
  margin-top: 28px; display: grid; gap: 14px;
}
.bullets li {
  position: relative; padding-left: 26px; color: var(--fg-muted);
  font-size: 15.5px;
}
.bullets li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 14px; height: 2px; background: var(--accent);
}
.bullets strong { color: var(--fg); font-weight: 700; }

/* ============= TEAM ============= */
.section--team {
  background: var(--bg);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

.team-card {
  min-height: 250px;
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, color-mix(in oklab, var(--bg-2) 92%, var(--c-teal) 8%), var(--bg-2));
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.team-card h3 {
  font-size: 22px;
  margin: 14px 0 10px;
  letter-spacing: -0.015em;
}

.team-card p {
  color: var(--fg-muted);
  font-size: 14.5px;
  margin: 0;
}

@media (max-width: 1024px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
  .team-grid { grid-template-columns: 1fr; }
  .team-card { min-height: auto; }
}

/* ============= EXPERIENCE STRIP & CARDS ============= */
.exp-strip {
  position: relative; height: clamp(220px, 30vw, 340px); margin: 0 0 48px;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 92%, 96% 100%, 0 100%);
}
.exp-strip img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.05) brightness(.78); }
.exp-strip__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(31,34,46,.55) 0%, rgba(0,0,0,0) 50%);
}
.exp-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}
.exp-card {
  min-height: 320px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 30px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: border-color .2s ease, transform .2s ease;
}
.exp-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.exp-card__index {
  font-family: var(--font-display);
  font-weight: 900; font-size: 14px; letter-spacing: .14em;
  color: var(--accent);
}
.exp-card h3 {
  font-size: 22px; margin: 14px 0 10px; letter-spacing: -0.015em;
}
.exp-card p { color: var(--fg-muted); font-size: 14.5px; margin: 0; }
.kpi-row {
  margin-top: auto;
  display: flex; flex-wrap: wrap; gap: 24px;
  padding-top: 18px; border-top: 1px dashed var(--line-2);
}
.kpi-row li { display: flex; flex-direction: column; }
.kpi-row b {
  font-family: var(--font-display); font-weight: 800; font-size: 22px; letter-spacing: -0.02em;
  color: var(--fg);
}
.kpi-row span { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-dim); }

@media (max-width: 1024px) {
  .exp-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .exp-grid { grid-template-columns: 1fr; }
}

.project-panel {
  margin-top: 22px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: clamp(24px, 4vw, 42px);
  display: grid;
  grid-template-columns: minmax(240px, .78fr) 1.22fr;
  gap: clamp(24px, 4vw, 56px);
}

.project-panel__head h3 {
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.025em;
  margin: 0 0 14px;
}

.project-panel__head p {
  color: var(--fg-muted);
  margin: 0;
  font-size: 15px;
}

.project-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.project-list span {
  background: var(--bg);
  padding: 14px 16px;
  color: var(--fg-muted);
  font-size: 13.5px;
  line-height: 1.35;
}

.project-list span:nth-child(3n + 1) {
  color: var(--fg);
}

@media (max-width: 900px) {
  .project-panel { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .project-list { grid-template-columns: 1fr; }
}

/* ============= CASE CATALOG ============= */
.section--cases {
  background: var(--bg);
}

.case-filters {
  display: grid;
  gap: 16px;
  margin-bottom: 22px;
}

.case-filter-group {
  display: grid;
  grid-template-columns: 138px repeat(9, max-content);
  align-items: center;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  overflow-x: auto;
  scrollbar-width: none;
}

.case-filter-group::-webkit-scrollbar {
  display: none;
}

.case-filter-group[data-filter-group="work"] {
  grid-template-columns: 138px repeat(6, max-content);
}

.case-filter-group__label {
  width: 128px;
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--fg-dim);
  font-weight: 800;
}

.case-filter {
  min-height: 38px;
  padding: 9px 11px;
  border: 1px solid var(--line-2);
  color: var(--fg-muted);
  background: transparent;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.case-filter:hover {
  color: var(--fg);
  border-color: var(--fg-dim);
}

.case-filter.is-active {
  color: #06140B;
  background: var(--c-green);
  border-color: var(--c-green);
}

.case-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 0 0 18px;
}

.case-count {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.case-reset {
  color: var(--fg-muted);
  font-size: 13px;
  font-weight: 700;
  border-bottom: 1px solid currentColor;
}

.case-reset:hover {
  color: var(--c-teal);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  background: transparent;
}

.case-card {
  min-height: 376px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  justify-content: space-between;
  transition: background .18s ease, color .18s ease, opacity .18s ease;
  overflow: hidden;
}

.case-card > a {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  gap: 14px;
}

.case-card__media {
  display: block;
  height: 148px;
  margin: -22px -22px 4px;
  background: var(--bg-3);
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
  overflow: hidden;
}

.case-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.04) brightness(.88);
}

.case-card[hidden] {
  display: none;
}

.case-card:hover {
  background: color-mix(in oklab, var(--bg-2) 88%, var(--c-green) 12%);
}

.case-card__type {
  color: var(--accent-2);
  font-size: 11px;
  letter-spacing: .13em;
  text-transform: uppercase;
  font-weight: 900;
}

.case-card h3 {
  font-size: clamp(18px, 1.55vw, 24px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
}

.case-card p {
  color: var(--fg-muted);
  margin: auto 0 0;
  font-size: 14px;
}

.case-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-2);
}

.case-card__tags span,
.case-card__tags li {
  font-size: 11px;
  line-height: 1;
  color: var(--fg-dim);
  border: 1px solid var(--line);
  padding: 6px 8px;
  text-transform: uppercase;
  letter-spacing: .07em;
}

@media (max-width: 1120px) {
  .cases-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .cases-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-filter-group,
  .case-filter-group[data-filter-group="work"] {
    grid-template-columns: repeat(10, max-content);
  }
}

@media (max-width: 540px) {
  .cases-grid { grid-template-columns: 1fr; }
  .case-toolbar { align-items: flex-start; flex-direction: column; }
}

/* ============= STEPS (tech customer) ============= */
.steps { display: grid; gap: 16px; margin-top: 28px; counter-reset: step; }
.steps li {
  display: grid; grid-template-columns: 64px 1fr; gap: 18px;
  padding: 18px 0; border-top: 1px solid rgba(255,255,255,.10);
}
.steps li:last-child { border-bottom: 1px solid rgba(255,255,255,.10); }
.steps__num {
  font-family: var(--font-display); font-weight: 900;
  font-size: 24px; letter-spacing: -0.02em;
  color: var(--c-teal);
}
.steps h4 { font-size: 18px; margin: 2px 0 6px; }
.steps p { color: rgba(255,255,255,.72); margin: 0; font-size: 14.5px; }

/* ============= DESIGN tags ============= */
.tags {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px;
}
.tags span {
  font-size: 12.5px; padding: 7px 11px;
  border: 1px solid var(--line-2); color: var(--fg-muted);
  font-weight: 600; letter-spacing: .02em;
}
.tags span:hover { color: var(--fg); border-color: var(--fg-dim); }

/* ============= CONSTRUCTION grid ============= */
.constr-grid {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(32px, 5vw, 72px);
  margin-top: 8px;
}
@media (max-width: 900px) { .constr-grid { grid-template-columns: 1fr; } }
.constr-grid__visual { position: relative; aspect-ratio: 4/3; overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%, 0 14%, 9% 0);
  border: 1px solid rgba(255,255,255,.12);
}
.constr-grid__visual img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.08); }
.constr-grid__visual-tag {
  position: absolute; right: 0; bottom: 0;
  background: #fff; color: #000;
  display: inline-flex; align-items: center; gap: 14px;
  padding: 14px 18px;
  font-size: 12px; line-height: 1.35; font-weight: 600;
}
.constr-grid__visual-tag span:first-child {
  font-family: var(--font-display); font-weight: 900; font-size: 22px; letter-spacing: -0.02em;
}
.constr-list { display: grid; gap: 14px; }
.constr-list li {
  display: grid; grid-template-columns: 64px 1fr; gap: 18px;
  padding: 20px 0; border-top: 1px solid rgba(255,255,255,.14);
}
.constr-list li:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.constr-list__num {
  font-family: var(--font-display); font-weight: 900;
  font-size: 24px; letter-spacing: -0.02em; color: var(--c-green);
}
.constr-list h4 { font-size: 18px; margin: 2px 0 6px; color: #fff; }
.constr-list p { color: rgba(255,255,255,.72); margin: 0; font-size: 14.5px; }

.trust-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  margin-top: 56px;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.18);
}
.trust { background: #000; padding: 22px; display: flex; flex-direction: column; gap: 6px; }
.trust b {
  font-family: var(--font-display); font-weight: 800; font-size: 22px; letter-spacing: -0.02em;
  color: #fff;
}
.trust span { font-size: 12px; color: rgba(255,255,255,.65); }
@media (max-width: 720px) { .trust-row { grid-template-columns: repeat(2, 1fr); } }

/* ============= CONTACT ============= */
.section--contact {
  background: var(--bg-2);
  position: relative; overflow: hidden;
}
.section--contact::before {
  content: "";
  position: absolute; inset: auto -10% -30% auto;
  width: 60vw; height: 60vw; max-width: 900px; max-height: 900px;
  background: linear-gradient(135deg, var(--c-green) 0%, var(--c-teal) 100%);
  clip-path: polygon(40% 100%, 100% 100%, 100% 28%);
  opacity: .14;
  pointer-events: none;
}
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 88px); align-items: start; position: relative; }
@media (max-width: 900px) { .contact { grid-template-columns: 1fr; } }

.contact__direct { margin-top: 36px; }
.contact__mail {
  display: inline-grid; grid-template-columns: auto auto auto; align-items: center; gap: 18px;
  padding: 22px 26px; border: 1px solid var(--line-2);
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}
.contact__mail:hover { background: var(--c-green); border-color: var(--c-green); color: #08110B; }
.contact__mail-label {
  font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--fg-muted); font-weight: 600;
}
.contact__mail:hover .contact__mail-label { color: rgba(0,0,0,.7); }
.contact__mail-addr {
  font-family: var(--font-display); font-weight: 800; font-size: 18px; letter-spacing: -0.01em;
}
.contact__mail-arrow {
  font-size: 20px; transition: transform .2s ease;
}
.contact__mail:hover .contact__mail-arrow { transform: translateX(4px); }
@media (max-width: 540px) {
  .contact__mail { grid-template-columns: 1fr; gap: 6px; }
  .contact__mail-arrow { display: none; }
}

.contact__form {
  border: 1px solid var(--line);
  background: var(--bg);
  padding: clamp(24px, 3vw, 36px);
  display: grid; gap: 16px;
}
.field { display: grid; gap: 6px; }
.field span {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-muted); font-weight: 600;
}
.field input, .field textarea {
  font: inherit; color: var(--fg);
  background: transparent;
  border: 0; border-bottom: 1px solid var(--line-2);
  padding: 10px 0; outline: none;
  resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: var(--fg-dim); }
.field input:focus, .field textarea:focus { border-bottom-color: var(--c-green); }
.file-field {
  position: relative;
}
.file-field input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.file-field__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--line-2);
  color: var(--fg);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: none;
}
.file-field:hover .file-field__button {
  border-color: var(--c-green);
}
.form-status {
  min-height: 18px;
  margin: 0;
  font-size: 13px;
  color: var(--fg-muted);
}
.form-status[data-state="success"] { color: var(--c-green); }
.form-status[data-state="error"] { color: #d45757; }
.btn[disabled] { cursor: progress; opacity: .72; }

/* ============= INNER PAGES ============= */
.page-main {
  padding-top: 0;
}
.page-hero {
  min-height: clamp(340px, 42vw, 560px);
  display: grid;
  align-items: end;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.page-hero--compact {
  min-height: clamp(280px, 34vw, 430px);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, color-mix(in oklab, var(--bg) 92%, transparent), color-mix(in oklab, var(--bg) 46%, transparent)),
    var(--page-image, url("/site-static/images/hero-industrial.png")) center / cover no-repeat;
  filter: grayscale(1);
  opacity: .34;
}
.page-hero__content {
  position: relative;
  padding-top: clamp(58px, 8vw, 100px);
  padding-bottom: clamp(42px, 6vw, 72px);
  max-width: 900px;
}
.page-hero h1 {
  font-size: clamp(38px, 6vw, 82px);
  max-width: 960px;
}
.page-hero p {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--fg-muted);
  font-size: clamp(17px, 1.4vw, 20px);
}
.page-section {
  padding: clamp(56px, 7vw, 104px) 0;
  border-bottom: 1px solid var(--line);
}
.page-section--compact { padding-top: 0; }
.page-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.page-card {
  border: 1px solid var(--line);
  background: var(--bg-2);
  min-height: 260px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color .2s ease, transform .2s ease;
}
.page-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.page-card__kicker {
  color: var(--accent);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.page-card h2,
.page-card h3 {
  font-size: clamp(24px, 2.5vw, 34px);
}
.page-card p,
.page-list li,
.page-copy p {
  color: var(--fg-muted);
}
.page-card .btn { margin-top: auto; align-self: flex-start; }
.page-split {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
}
.page-copy h2 {
  font-size: clamp(34px, 5vw, 68px);
  margin-bottom: 22px;
}
.page-copy p + p { margin-top: 16px; }
.page-media {
  min-height: 420px;
  border: 1px solid var(--line);
  overflow: hidden;
}
.page-media img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  filter: grayscale(1) contrast(1.04);
}
.page-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.page-list li {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 18px 20px;
}
.gallery-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.gallery-strip img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(1);
}
.contact-page {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(0, 1fr);
  gap: clamp(36px, 6vw, 88px);
  align-items: start;
}
.contact-channels {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}
.contact-channels a {
  border: 1px solid var(--line);
  padding: 18px 20px;
  color: var(--fg);
  font-weight: 800;
}
.file-list {
  display: grid;
  gap: 16px;
}
.file-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 22px 24px;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.news-card {
  display: grid;
  gap: 16px;
  border: 1px solid var(--line);
  background: var(--bg-2);
}
.news-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  filter: grayscale(1);
}
.news-card__body {
  padding: 0 22px 24px;
}
.news-card__body h2 {
  font-size: 24px;
  margin-bottom: 12px;
}
@media (max-width: 980px) {
  .page-grid,
  .news-grid,
  .gallery-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-split,
  .contact-page { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .page-grid,
  .news-grid,
  .gallery-strip,
  .page-list { grid-template-columns: 1fr; }
  .file-row { grid-template-columns: 1fr; }
}

/* ============= FOOTER ============= */
.footer {
  background: var(--c-black);
  color: rgba(255,255,255,.7);
  padding: 56px 0 40px;
}
.footer__inner.container { max-width: var(--wide-container); }
.footer__inner {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px;
}
.footer__logo {
  display: block;
  width: clamp(132px, 14vw, 181px);
  height: auto;
}
.footer__nav { display: flex; flex-wrap: nowrap; gap: clamp(10px, 1.1vw, 18px); justify-content: center; font-size: 13px; white-space: nowrap; }
.footer__nav a:hover { color: #fff; }
.footer__legal { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: rgba(255,255,255,.5); text-align: right; white-space: nowrap; }
.footer__requisites { display: flex; gap: 10px; justify-content: flex-end; }
@media (max-width: 1180px) {
  .footer__inner { grid-template-columns: 1fr; text-align: center; }
  .footer__legal { text-align: center; }
  .footer__nav { justify-content: center; flex-wrap: wrap; white-space: normal; }
  .footer__requisites { justify-content: center; flex-wrap: wrap; }
}

/* ============= LIGHT THEME tweaks for dark blocks ============= */
[data-theme="light"] .nav {
  background: color-mix(in oklab, #FFFFFF 86%, transparent);
  box-shadow: 0 10px 34px -28px rgba(31,34,46,.45);
}
[data-theme="light"] .hero {
  background: #F5F6F7;
  color: var(--fg);
}
[data-theme="light"] .hero__media img {
  filter: grayscale(1) contrast(1.04) brightness(1.05);
  opacity: .34;
}
[data-theme="light"] .hero__overlay {
  background:
    linear-gradient(180deg, rgba(245,246,247,.98) 0%, rgba(245,246,247,.78) 42%, rgba(245,246,247,1) 98%),
    linear-gradient(104deg, rgba(255,255,255,.94) 0%, rgba(255,255,255,.66) 50%, rgba(255,255,255,.20) 100%);
}
[data-theme="light"] .hero__diag {
  opacity: .32;
  mix-blend-mode: multiply;
}
[data-theme="light"] .hero .eyebrow,
[data-theme="light"] .hero__lede {
  color: var(--fg-muted);
}
[data-theme="light"] .hero__title,
[data-theme="light"] .metric__value {
  color: var(--fg);
}
[data-theme="light"] .hero__metrics {
  border-top-color: var(--line-2);
  border-left-color: var(--line-2);
  background: var(--line-2);
}
[data-theme="light"] .hero__metrics li {
  background: rgba(255,255,255,.78);
  border-right-color: var(--line-2);
  border-bottom-color: var(--line-2);
  box-shadow: 0 18px 42px -34px rgba(31,34,46,.55);
}
[data-theme="light"] .metric__label,
[data-theme="light"] .scroll-hint {
  color: var(--fg-muted);
}
[data-theme="light"] .scroll-hint::after {
  background: var(--fg-muted);
}
[data-theme="light"] .btn--ghost {
  color: var(--fg);
  background: rgba(255,255,255,.48);
  border-color: var(--line-2);
}
[data-theme="light"] .btn--ghost:hover {
  border-color: var(--c-dark);
}
[data-theme="light"] .section--dark,
[data-theme="light"] .section--construction {
  background: #FFFFFF;
  color: var(--fg);
}
[data-theme="light"] .section--dark .t-muted,
[data-theme="light"] .section__title--light {
  color: var(--fg);
}
[data-theme="light"] .section__sub--light,
[data-theme="light"] .eyebrow--light {
  color: var(--fg-muted);
}
[data-theme="light"] .steps li,
[data-theme="light"] .steps li:last-child,
[data-theme="light"] .constr-list li,
[data-theme="light"] .constr-list li:last-child {
  border-color: var(--line);
}
[data-theme="light"] .steps p,
[data-theme="light"] .constr-list p {
  color: var(--fg-muted);
}
[data-theme="light"] .constr-list h4 {
  color: var(--fg);
}
[data-theme="light"] .constr-grid__visual {
  border-color: var(--line);
  background: var(--bg-3);
}
[data-theme="light"] .constr-grid__visual img,
[data-theme="light"] .media-frame img,
[data-theme="light"] .exp-strip img {
  filter: grayscale(1) contrast(1.04) brightness(1.02);
}
[data-theme="light"] .trust-row {
  background: var(--line-2);
  border-color: var(--line-2);
}
[data-theme="light"] .trust {
  background: #FFFFFF;
}
[data-theme="light"] .trust b {
  color: var(--fg);
}
[data-theme="light"] .trust span {
  color: var(--fg-muted);
}
[data-theme="light"] .footer { background: #0E1016; }
[data-theme="light"] .contact__form { background: #fff; }
[data-theme="light"] .exp-card { background: #fff; }

/* light: muted backgrounds for sections that aren't dark */
[data-theme="light"] .section--about { background: #FFFFFF; }
[data-theme="light"] .section--design { background: #FFFFFF; }
[data-theme="light"] .section--experience { background: #F5F6F7; }
[data-theme="light"] .section--contact { background: #F5F6F7; }

.news-card > a {
  display: block;
  min-height: 100%;
}

.page-action {
  margin: 28px 0 0;
}

.article-copy {
  max-width: 840px;
}

.article-copy p {
  font-size: clamp(17px, 1.4vw, 20px);
}

.btn--danger {
  border-color: #b83b3b;
  background: #fff2f2;
  color: #8f1d1d;
}

.admin-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.admin-head__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.admin-tabs {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin-bottom: 24px;
  overflow-x: auto;
}

.admin-tab {
  min-height: 38px;
  padding: 9px 12px;
  border: 1px solid var(--line-2);
  color: var(--fg-muted);
  background: transparent;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.admin-tab.is-active {
  color: #06140B;
  background: var(--c-green);
  border-color: var(--c-green);
}

.admin-layout {
  display: grid;
  grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr);
  gap: 20px;
  align-items: start;
}

.admin-list {
  display: grid;
  gap: 8px;
}

.admin-item {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 14px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  text-align: left;
}

.admin-item strong {
  color: var(--fg);
}

.admin-item span {
  color: var(--fg-muted);
  font-size: 12px;
}

.admin-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--bg-2);
}

.admin-form label {
  display: grid;
  gap: 6px;
  color: var(--fg-muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.admin-form input,
.admin-form select,
.admin-form textarea {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-bottom: 1px solid var(--line-2);
  background: transparent;
  color: var(--fg);
  font: inherit;
  letter-spacing: 0;
  text-transform: none;
}

.admin-form select {
  appearance: none;
}

.admin-form textarea {
  resize: vertical;
}

.admin-form .wide,
.admin-actions,
.admin-form .form-status {
  grid-column: 1 / -1;
}

.admin-form .check {
  display: flex;
  align-items: center;
  gap: 10px;
}

.admin-form .check input {
  width: auto;
  min-height: auto;
}

.admin-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.admin-empty {
  padding: 18px;
  color: var(--fg-muted);
  border: 1px solid var(--line);
  background: var(--bg-2);
}

.lead-item.is-active {
  border-color: var(--c-green);
}

.lead-item__meta b {
  color: var(--accent-2);
  font-weight: 900;
}

.lead-summary {
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--bg-2) 86%, var(--c-green) 14%);
}

.lead-summary strong {
  font-size: 20px;
  line-height: 1.1;
}

.lead-summary span,
.lead-summary p {
  color: var(--fg-muted);
  margin: 0;
}

.lead-summary a {
  color: var(--accent-2);
  font-weight: 800;
}

@media (max-width: 900px) {
  .admin-head,
  .admin-layout,
  .admin-form {
    grid-template-columns: 1fr;
  }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}