/* ==========================================================================
   Sahand Industrial Group — Stylesheet
   Design system: industrial / glass, deep graphite + teal accent
   ========================================================================== */

:root {
  /* Palette */
  --graphite-950: #0a0e11;
  --graphite-900: #0f1417;
  --graphite-850: #131a1e;
  --graphite-800: #182027;
  --graphite-700: #232c33;
  --graphite-600: #333f47;
  --line: rgba(255, 255, 255, 0.09);
  --line-strong: rgba(255, 255, 255, 0.16);

  --white: #f7f9f9;
  --off-white: #eef2f2;
  --gray-300: #c9d2d5;
  --gray-400: #a8b3b7;
  --gray-500: #859297;

  --teal: #14a596;
  --teal-deep: #00746b;
  --teal-soft: rgba(20, 165, 150, 0.14);
  --glass-blue: #8fb9c9;

  --success: #14a596;

  /* Type */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Layout */
  --container-max: 1280px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-fast: 180ms;
  --dur-med: 420ms;
  --dur-slow: 900ms;

  color-scheme: dark;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--graphite-950);
  color: var(--white);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, h4, p, figure { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, select, textarea { font: inherit; color: inherit; }

/* ---------- Accessibility helpers ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -60px;
  background: var(--teal);
  color: var(--graphite-950);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 999;
  transition: top var(--dur-fast) var(--ease);
}
.skip-link:focus { top: 1rem; }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(4rem, 9vw, 7.5rem);
}

.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

.section--alt { background: var(--graphite-900); }

.section-grid-lines {
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(180deg, transparent, #000 8%, #000 92%, transparent);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--teal);
  display: inline-block;
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

h2.headline {
  font-size: clamp(1.9rem, 3.6vw, 2.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.lede {
  margin-top: 1.1rem;
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  color: var(--gray-300);
  max-width: 42rem;
}

/* Glass / frosted panel language */
.glass-panel {
  background: linear-gradient(155deg, rgba(255,255,255,0.055), rgba(255,255,255,0.02));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 20px 60px -25px rgba(0,0,0,0.6);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.7rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--teal);
  color: var(--graphite-950);
  box-shadow: 0 12px 30px -12px rgba(20,165,150,0.55);
}
.btn--primary:hover { background: #1cc0af; }

.btn--ghost {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line-strong);
  color: var(--white);
}
.btn--ghost:hover { background: rgba(255,255,255,0.11); border-color: rgba(255,255,255,0.3); }

.btn--sm { padding: 0.6rem 1.15rem; font-size: 0.85rem; }
.btn--block { width: 100%; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 500;
  padding-block: 1.1rem;
  transition: background var(--dur-med) var(--ease), padding var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(10, 14, 17, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding-block: 0.7rem;
  border-color: var(--line);
  box-shadow: 0 10px 30px -20px rgba(0,0,0,0.7);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand { display: flex; align-items: center; gap: 0.6rem; }
.brand img { height: 26px; width: auto; filter: brightness(0) invert(1); }
.brand-name { font-weight: 800; font-size: 1.02rem; letter-spacing: 0.01em; }

.nav-main {
  display: none;
}
.nav-main ul { display: flex; gap: 2rem; }
.nav-main a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--gray-300);
  transition: color var(--dur-fast) var(--ease);
  position: relative;
  padding-block: 0.3rem;
}
.nav-main a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--teal);
  transition: right var(--dur-med) var(--ease);
}
.nav-main a:hover { color: var(--white); }
.nav-main a:hover::after { right: 0; }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.header-cta { display: none; }

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,0.04);
}
.menu-toggle svg { width: 20px; height: 20px; }
.menu-toggle .icon-close { display: none; }
.menu-toggle[aria-expanded="true"] .icon-open { display: none; }
.menu-toggle[aria-expanded="true"] .icon-close { display: block; }

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 490;
  background: var(--graphite-950);
  padding: 6rem 1.5rem 2rem;
  transform: translateX(100%);
  transition: transform var(--dur-med) var(--ease);
  overflow-y: auto;
}
.mobile-nav.is-open { transform: translateX(0); }
.mobile-nav ul { display: flex; flex-direction: column; gap: 0.25rem; }
.mobile-nav a {
  display: block;
  padding: 1rem 0.25rem;
  font-size: 1.3rem;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}
.mobile-nav .header-cta { display: flex; margin-top: 1.5rem; }

@media (min-width: 960px) {
  .nav-main { display: block; }
  .header-cta { display: inline-flex; }
  .menu-toggle { display: none; }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--graphite-950);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-media video,
.hero-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-media::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(0deg, rgba(8,11,13,0.96) 0%, rgba(8,11,13,0.62) 42%, rgba(8,11,13,0.35) 68%, rgba(8,11,13,0.55) 100%),
    linear-gradient(90deg, rgba(8,11,13,0.55) 0%, rgba(8,11,13,0.05) 55%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-block: clamp(6rem, 14vw, 8rem) clamp(3rem, 7vw, 4.5rem);
}

.hero-content { max-width: 40rem; }

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--teal);
  text-transform: uppercase;
}

.hero-headline {
  margin-top: 1rem;
  font-size: clamp(2.3rem, 6vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.hero-sub {
  margin-top: 1.4rem;
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  color: var(--gray-300);
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 2.1rem;
}

.hero-trust {
  margin-top: 2.4rem;
  font-size: 0.85rem;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.hero-trust::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px var(--teal-soft);
}

.scroll-cue {
  position: absolute;
  bottom: 1.6rem;
  right: var(--gutter);
  z-index: 2;
  display: none;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray-400);
}
.scroll-cue .line {
  width: 1px; height: 34px;
  background: linear-gradient(var(--gray-400), transparent);
  animation: scrollcue 2.2s var(--ease) infinite;
}
@keyframes scrollcue {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  50.01% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}
@media (min-width: 700px) { .scroll-cue { display: flex; } }

/* ==========================================================================
   Trust metrics
   ========================================================================== */
.metrics {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--graphite-900);
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
}
@media (min-width: 760px) {
  .metrics-grid { grid-template-columns: repeat(5, 1fr); }
}
.metric-card {
  background: var(--graphite-900);
  padding: 2.25rem 1.25rem;
  text-align: center;
}
.metric-value {
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}
.metric-value .unit { font-size: 0.55em; font-weight: 700; color: var(--teal); margin-left: 0.15em; }
.metric-label {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--gray-400);
  line-height: 1.35;
}

/* ==========================================================================
   About
   ========================================================================== */
.about-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}
@media (min-width: 900px) {
  .about-grid { grid-template-columns: 1.05fr 0.95fr; gap: 4rem; }
}
.about-media {
  order: -1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 5;
  position: relative;
}
.about-media img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 900px) { .about-media { order: 1; } }

.about-bullets {
  margin-top: 2rem;
  display: grid;
  gap: 0.9rem;
}
.about-bullets li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  font-size: 0.96rem;
  color: var(--gray-300);
}
.about-bullets svg { flex: none; width: 18px; height: 18px; margin-top: 0.15rem; color: var(--teal); }

/* ==========================================================================
   Products
   ========================================================================== */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .product-grid > :nth-child(4),
  .product-grid > :nth-child(5) { grid-column: span 1; }
}

.product-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--graphite-900);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: border-color var(--dur-med) var(--ease), transform var(--dur-med) var(--ease);
}
.product-card:hover { transform: translateY(-4px); border-color: rgba(20,165,150,0.45); }

.product-card-media {
  position: absolute; inset: 0;
}
.product-card-media img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 900ms var(--ease);
}
.product-card:hover .product-card-media img { transform: scale(1.06); }
.product-card-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(6,9,11,0.92) 10%, rgba(6,9,11,0.35) 55%, rgba(6,9,11,0.15) 100%);
}

.product-card-body {
  position: relative;
  z-index: 1;
  padding: 1.6rem 1.5rem;
}
.product-card-title { font-size: 1.2rem; font-weight: 800; }
.product-card-text { margin-top: 0.5rem; font-size: 0.9rem; color: var(--gray-300); }
.product-card-link {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--teal);
}
.product-card-link svg { width: 14px; height: 14px; transition: transform var(--dur-fast) var(--ease); }
.product-card-link:hover svg { transform: translateX(3px); }

.color-strip {
  margin-top: 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}
.color-strip span.label { font-size: 0.8rem; color: var(--gray-400); margin-right: 0.3rem; }
.color-chip {
  width: 40px; height: 40px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
}
.color-chip img { width: 100%; height: 100%; object-fit: cover; }

/* ==========================================================================
   Ecosystem
   ========================================================================== */
.chain {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
  margin-bottom: 3rem;
}
@media (min-width: 860px) {
  .chain { grid-template-columns: repeat(4, 1fr); gap: 0; }
}
.chain-step {
  position: relative;
  padding: 1.6rem 1.5rem;
  border: 1px solid var(--line);
  background: var(--graphite-900);
}
@media (min-width: 860px) {
  .chain-step:not(:last-child) { border-right: none; }
  .chain-step::after {
    content: "";
    position: absolute;
    right: -9px; top: 50%;
    transform: translateY(-50%);
    width: 16px; height: 16px;
    background: var(--graphite-950);
    border: 1px solid var(--line-strong);
    border-left: none; border-bottom: none;
    rotate: 45deg;
    z-index: 2;
  }
  .chain-step:last-child::after { display: none; }
}
.chain-step-index { font-size: 0.75rem; font-weight: 700; color: var(--teal); letter-spacing: 0.1em; }
.chain-step-title { margin-top: 0.5rem; font-weight: 800; font-size: 1.05rem; }
.chain-step-text { margin-top: 0.4rem; font-size: 0.86rem; color: var(--gray-400); }

.subsidiary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}
@media (min-width: 640px) { .subsidiary-grid { grid-template-columns: repeat(4, 1fr); } }
.subsidiary-item {
  background: var(--graphite-900);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  text-align: center;
  transition: background var(--dur-fast) var(--ease);
}
.subsidiary-item:hover { background: var(--graphite-800); }
.subsidiary-item img { height: 42px; width: auto; object-fit: contain; }
.subsidiary-item span { font-size: 0.74rem; color: var(--gray-400); }

/* ==========================================================================
   Capabilities
   ========================================================================== */
.capabilities-grid {
  display: grid;
  gap: 3rem;
}
@media (min-width: 940px) {
  .capabilities-grid { grid-template-columns: 0.95fr 1.05fr; gap: 4rem; align-items: start; }
}

.capability-list { display: grid; gap: 0.75rem; margin-top: 2rem; }
.capability-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.capability-item:hover, .capability-item.is-active {
  border-color: rgba(20,165,150,0.5);
  background: rgba(20,165,150,0.06);
}
.capability-item-head {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.capability-num { font-size: 0.78rem; color: var(--teal); font-weight: 700; }
.capability-title { font-weight: 800; font-size: 1.05rem; margin-top: 0.3rem; }
.capability-text { margin-top: 0.5rem; font-size: 0.9rem; color: var(--gray-400); max-width: 34rem; }

.capability-media {
  position: sticky;
  top: 6rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  aspect-ratio: 4/3;
}
.capability-media video, .capability-media img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease);
}
.capability-media video.is-active, .capability-media img.is-active { opacity: 1; }
.capability-media { position: relative; background: var(--graphite-900); }

.cert-row {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.cert-row-label { font-size: 0.8rem; color: var(--gray-400); margin-bottom: 1rem; }
.cert-list { display: flex; gap: 1rem; flex-wrap: wrap; }
.cert-item { width: 64px; }
.cert-item img {
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  aspect-ratio: 3/4;
  object-fit: cover;
}
.cert-item span { display: block; margin-top: 0.4rem; font-size: 0.68rem; text-align: center; color: var(--gray-500); }

/* ==========================================================================
   Customer Partnership
   ========================================================================== */
.partnership-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 760px) { .partnership-grid { grid-template-columns: repeat(3, 1fr); } }

.partnership-card {
  padding: 2rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--graphite-900);
}
.partnership-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--teal-soft);
  color: var(--teal);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.25rem;
}
.partnership-icon svg { width: 22px; height: 22px; }
.partnership-title { font-weight: 800; font-size: 1.08rem; }
.partnership-text { margin-top: 0.6rem; font-size: 0.9rem; color: var(--gray-400); }

.partnership-note {
  margin-top: 2.5rem;
  font-size: 0.9rem;
  color: var(--gray-400);
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
  max-width: 46rem;
}

/* ==========================================================================
   Global reach
   ========================================================================== */
.reach-grid {
  display: grid;
  gap: 3rem;
}
@media (min-width: 940px) {
  .reach-grid { grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
}

.region-map { position: relative; }
.region-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
}
@media (min-width: 480px) { .region-list { grid-template-columns: repeat(3, 1fr); } }

.region-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.6rem 1rem;
  font-size: 0.82rem;
  text-align: center;
  color: var(--gray-300);
  background: var(--graphite-900);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
  cursor: default;
}
.region-chip:hover, .region-chip:focus-visible {
  border-color: var(--teal);
  color: var(--white);
  background: var(--teal-soft);
}

.reach-proofs { display: grid; gap: 1rem; margin-top: 2rem; }
.proof-card {
  display: flex; gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}
.proof-card-num { font-weight: 800; color: var(--teal); font-size: 0.9rem; flex: none; width: 2rem; }
.proof-card-title { font-weight: 700; }
.proof-card-text { margin-top: 0.3rem; font-size: 0.88rem; color: var(--gray-400); }

/* ==========================================================================
   R&D / People / Responsibility
   ========================================================================== */
.rnd-grid {
  display: grid;
  gap: 1.25rem;
}
@media (min-width: 760px) { .rnd-grid { grid-template-columns: repeat(3, 1fr); } }
.rnd-card {
  padding: 1.9rem 1.6rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20,165,150,0.07), transparent 60%), var(--graphite-900);
}
.rnd-title { font-weight: 800; font-size: 1.05rem; }
.rnd-text { margin-top: 0.6rem; font-size: 0.9rem; color: var(--gray-400); }

/* ==========================================================================
   Media proof strip
   ========================================================================== */
.proof-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.9rem;
}
@media (min-width: 860px) {
  .proof-strip { grid-template-columns: 1.4fr 1fr 1fr; grid-template-rows: repeat(2, 1fr); }
  .proof-tile--lead { grid-row: span 2; }
}

.proof-strip-scroll {
  display: flex;
  gap: 0.9rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 0.5rem;
  -webkit-overflow-scrolling: touch;
}
.proof-strip-scroll .proof-tile { scroll-snap-align: start; flex: 0 0 82%; }
@media (min-width: 860px) {
  .proof-strip-scroll { display: contents; }
}

.proof-tile {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  min-height: 220px;
  background: var(--graphite-900);
}
.proof-tile--lead { min-height: 320px; }
.proof-tile img, .proof-tile video {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover;
}
.proof-tile::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(6,9,11,0.85), transparent 45%);
}
.proof-tile-caption {
  position: absolute; left: 1rem; bottom: 0.9rem; z-index: 1;
  font-size: 0.82rem; font-weight: 700;
}

/* ==========================================================================
   Contact / Final CTA
   ========================================================================== */
.contact-grid {
  display: grid;
  gap: 3rem;
}
@media (min-width: 980px) {
  .contact-grid { grid-template-columns: 1fr 1.05fr; gap: 4rem; }
}

.inquiry-list { display: grid; gap: 0.6rem; margin-top: 2rem; }
.inquiry-chip {
  display: flex; align-items: center; gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.1rem;
  font-size: 0.9rem;
  color: var(--gray-300);
}
.inquiry-chip svg { width: 16px; height: 16px; color: var(--teal); flex: none; }

.contact-card {
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.5rem;
}
.contact-card-title { font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal); font-weight: 700; }
.contact-card-name { margin-top: 0.6rem; font-size: 1.3rem; font-weight: 800; }
.contact-card-role { color: var(--gray-400); font-size: 0.9rem; }
.contact-card-links { margin-top: 1.1rem; display: grid; gap: 0.6rem; }
.contact-card-links a {
  display: flex; align-items: center; gap: 0.6rem;
  font-weight: 700; font-size: 1rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.045);
  border: 1px solid var(--line);
  transition: background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.contact-card-links a:hover { background: var(--teal-soft); border-color: rgba(20,165,150,0.5); }
.contact-card-links svg { width: 18px; height: 18px; color: var(--teal); flex: none; }
.contact-card-sub { margin-top: 1rem; font-size: 0.84rem; color: var(--gray-500); }

.form-panel { padding: 1.9rem; border-radius: var(--radius-lg); }
.form-row { display: grid; gap: 1.1rem; }
.form-row--2 { grid-template-columns: 1fr; }
@media (min-width: 560px) { .form-row--2 { grid-template-columns: 1fr 1fr; } }

.field { display: flex; flex-direction: column; gap: 0.45rem; }
.field label { font-size: 0.82rem; font-weight: 700; color: var(--gray-300); }
.field label .req { color: var(--teal); }
.field input, .field select, .field textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  font-size: 0.94rem;
  color: var(--white);
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.field input::placeholder, .field textarea::placeholder { color: var(--gray-500); }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--teal);
  background: rgba(255,255,255,0.08);
}
.field textarea { resize: vertical; min-height: 110px; }
.field select { appearance: none; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23859297' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>"); background-repeat: no-repeat; background-position: right 0.9rem center; background-size: 16px; padding-right: 2.5rem; }

.form-foot {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.88rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  display: none;
}
.form-status.is-visible { display: block; }
.form-status.is-error { color: #ff9d9d; border-color: rgba(255,110,110,0.4); background: rgba(255,80,80,0.08); }
.form-status.is-success { color: var(--teal); border-color: rgba(20,165,150,0.4); background: var(--teal-soft); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 3.5rem 6.5rem;
  background: var(--graphite-950);
}
@media (min-width: 700px) { .site-footer { padding-bottom: 3.5rem; } }

.footer-grid {
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 780px) {
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem; }
}
.footer-brand img { height: 24px; filter: brightness(0) invert(1); }
.footer-tagline { margin-top: 1rem; font-size: 0.88rem; color: var(--gray-400); max-width: 26rem; }
.footer-heading { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gray-500); margin-bottom: 1rem; }
.footer-links { display: grid; gap: 0.6rem; }
.footer-links a { font-size: 0.92rem; color: var(--gray-300); }
.footer-links a:hover { color: var(--teal); }
.footer-bottom {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--gray-500);
}
.footer-social { display: flex; gap: 0.9rem; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center;
}
.footer-social svg { width: 16px; height: 16px; }
.footer-social a:hover { border-color: var(--teal); color: var(--teal); }

/* ==========================================================================
   Sticky mobile contact bar
   ========================================================================== */
.mobile-cta-bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 480;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line-strong);
  background: rgba(10,14,17,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transform: translateY(100%);
  transition: transform var(--dur-med) var(--ease);
  padding-bottom: env(safe-area-inset-bottom, 0);
}
.mobile-cta-bar.is-visible { transform: translateY(0); }
.mobile-cta-bar a {
  display: flex; flex-direction: column; align-items: center; gap: 0.3rem;
  padding: 0.75rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gray-300);
  border-right: 1px solid var(--line);
}
.mobile-cta-bar a:last-child { border-right: none; }
.mobile-cta-bar svg { width: 20px; height: 20px; color: var(--teal); }

@media (min-width: 960px) { .mobile-cta-bar { display: none; } }

/* ==========================================================================
   Reveal-on-scroll
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}
[data-reveal].is-revealed { opacity: 1; transform: translateY(0); }

.js-disabled [data-reveal] { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ==========================================================================
   Utility
   ========================================================================== */
.no-js .js-only { display: none !important; }
.lazy-video { background: var(--graphite-800); }

@media (max-width: 959px) {
  body { padding-bottom: 0; }
  .has-mobile-cta { padding-bottom: 64px; }
}