:root {
  color-scheme: dark;
  --bg-page: #0b0d11;
  --bg-section-alt: #10131a;
  --bg-card: #151922;
  --bg-card-elevated: #1c222e;
  --text-main: #f4f6f9;
  --text-muted: #9da6b5;
  --brand-red: #eb2127;
  --brand-red-hover: #ff2d34;
  --brand-black: #010101;
  --border-subtle: rgba(255, 255, 255, 0.11);
  --border-strong: rgba(255, 255, 255, 0.2);
  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 16px 40px rgba(0, 0, 0, 0.45);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --container: 1280px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background-color: var(--bg-page);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.6;
  overflow-x: hidden;
}

img,
video,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Sticky Top Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 13, 17, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 84px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand-pair {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

/* Optically balanced cap-heights: Dogsan diamond spans 96u while text spans 39.3u */
.brand-logo-dogsan {
  height: 50px;
  width: auto;
  flex-shrink: 0;
}

.brand-divider {
  width: 1px;
  height: 36px;
  background: rgba(255, 255, 255, 0.22);
  flex-shrink: 0;
}

.brand-logo-erteks {
  height: 34px;
  width: auto;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.main-nav a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.18s ease;
}

.main-nav a:hover {
  color: #ffffff;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  padding: 6px 11px;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  transition: background 0.16s ease, color 0.16s ease;
}

.lang-btn:hover {
  color: #ffffff;
}

.lang-btn.is-active {
  background: #ffffff;
  color: #0b0d11;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  background: var(--brand-red);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.18s ease, transform 0.15s ease;
  white-space: nowrap;
}

.btn-download:hover:not(:disabled) {
  background: var(--brand-red-hover);
  transform: translateY(-1px);
}

.btn-download:disabled {
  opacity: 0.78;
  cursor: wait;
}

.btn-download svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.btn-download .btn-text-mobile {
  display: none;
}

.offline-pill {
  display: none;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.15);
  color: #6ee7b7;
  border: 1px solid rgba(34, 197, 94, 0.35);
  font-size: 0.82rem;
  font-weight: 600;
}

html[data-offline="true"] .btn-download,
html[data-offline="true"] .hero-download-wrap {
  display: none !important;
}

html[data-offline="true"] .offline-pill {
  display: inline-flex;
}

/* Download Progress Banner */
.download-status-bar {
  display: none;
  background: var(--bg-card);
  color: #ffffff;
  border-top: 1px solid var(--border-subtle);
  padding: 10px 0;
  font-size: 0.85rem;
}

.download-status-bar.is-visible {
  display: block;
}

.status-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.progress-track {
  flex: 1;
  min-width: 180px;
  max-width: 360px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--brand-red);
  transition: width 0.15s ease;
}

/* Hero Section */
.hero {
  background: radial-gradient(circle at 85% 15%, rgba(235, 33, 39, 0.16), transparent 45%), var(--bg-page);
  color: var(--text-main);
  padding: 64px 0 74px;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 48px;
  align-items: center;
}

.eyebrow-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
}

.role-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
}

.role-chip--dogsan {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.role-chip--erteks {
  background: rgba(235, 33, 39, 0.18);
  color: #ff7b80;
  border: 1px solid rgba(235, 33, 39, 0.42);
}

.hero h1 {
  font-size: clamp(2rem, 3.6vw, 3.1rem);
  line-height: 1.14;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #ffffff;
}

.hero-lead {
  font-size: 1.06rem;
  color: #cfd5e0;
  margin-bottom: 16px;
  max-width: 62ch;
}

.hero-sublead {
  font-size: 0.96rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 62ch;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}

.btn-primary-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  color: #0b0d11;
  font-weight: 700;
  font-size: 0.92rem;
  transition: background 0.18s ease, transform 0.15s ease;
}

.btn-primary-light:hover {
  background: #e5e8ef;
  transform: translateY(-1px);
}

.btn-outline-dark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.92rem;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.btn-outline-dark:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.07);
}

/* Metrics Strip inside Hero */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
}

.metric-value {
  display: block;
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: 4px;
}

.metric-value span {
  color: var(--brand-red);
}

.metric-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* Hero Visual Card */
.hero-visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: #090b0e;
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.55);
  cursor: pointer;
}

.hero-visual-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.hero-visual-card:hover img {
  transform: scale(1.025);
}

.hero-visual-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  background: var(--bg-card);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.84rem;
  color: var(--text-muted);
}

.hero-visual-caption strong {
  color: #ffffff;
  font-weight: 600;
}

/* Product Scope Bar */
.product-scope-bar {
  background: var(--bg-section-alt);
  border-bottom: 1px solid var(--border-subtle);
  padding: 20px 0;
}

.scope-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.scope-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.scope-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.scope-tag {
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.86rem;
  font-weight: 600;
  color: #ffffff;
}

/* Section Headers */
.section {
  padding: 72px 0;
}

.section-intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.section-kicker {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-red);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.65rem, 2.6vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #ffffff;
}

.section-desc {
  margin-top: 8px;
  color: var(--text-muted);
  max-width: 64ch;
  font-size: 0.98rem;
}

/* Stage Jump Pills */
.stage-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}

.stage-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border-radius: 999px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.18s ease, background 0.18s ease;
}

.stage-pill:hover {
  border-color: var(--brand-red);
  background: var(--bg-card-elevated);
}

.stage-pill span {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--brand-red);
}

.pill-txt {
  font-weight: inherit;
}

/* Production Stage Block */
.stage-block {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 100px;
}

.stage-block:last-child {
  margin-bottom: 0;
}

.stage-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 22px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.stage-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 8px;
}

.stage-badge i {
  font-style: normal;
  color: var(--brand-red);
  margin-right: 4px;
}

.stage-header h3 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.stage-header p {
  color: var(--text-muted);
  font-size: 0.93rem;
  margin-top: 4px;
  max-width: 66ch;
}

.stage-count {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-card-elevated);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
}

/* Media Grid */
.media-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.media-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-card-elevated);
  border: 1px solid var(--border-subtle);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.media-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.media-card--wide {
  grid-column: span 2;
}

.media-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #090b0f;
  cursor: pointer;
}

.media-card--wide .media-frame {
  aspect-ratio: 4 / 3;
}

.media-card--video .media-frame {
  cursor: default;
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame img {
  transition: transform 0.35s ease;
}

.media-card:hover .media-frame img {
  transform: scale(1.03);
}

/* Video Card Controls */
.video-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(11, 13, 17, 0.85);
  backdrop-filter: blur(6px);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  pointer-events: none;
}

.video-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-red);
}

.video-play-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.48), rgba(0, 0, 0, 0.12));
  transition: opacity 0.2s ease;
}

.media-card--video.is-playing .video-play-overlay {
  opacity: 0;
  pointer-events: none;
}

.play-circle {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(235, 33, 39, 0.95);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(235, 33, 39, 0.45);
  transition: transform 0.18s ease;
}

.video-play-overlay:hover .play-circle {
  transform: scale(1.08);
}

.video-controls-bar {
  position: absolute;
  right: 10px;
  bottom: 10px;
  left: 10px;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  pointer-events: none;
}

.video-ctrl-btn {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 10px;
  border-radius: 6px;
  background: rgba(11, 13, 17, 0.85);
  backdrop-filter: blur(6px);
  color: #ffffff;
  font-size: 0.74rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: background 0.15s ease;
}

.video-ctrl-btn:hover {
  background: rgba(11, 13, 17, 0.98);
}

.media-caption {
  padding: 12px 14px;
  background: var(--bg-card-elevated);
  color: #ffffff;
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.38;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.zoom-hint {
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  flex-shrink: 0;
}

/* Sustainability Section */
.sustainability-section {
  background: var(--bg-section-alt);
  color: var(--text-main);
  padding: 76px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.sustain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 36px;
}

.sustain-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.sustain-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(235, 33, 39, 0.16);
  color: #ff666b;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.sustain-card h3 {
  font-size: 1.14rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.sustain-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Locations & Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.entity-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.entity-top {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 26px;
  margin-bottom: 26px;
}

/* Generous executive proportions matching Untitled-1.pdf */
.entity-logo-dogsan {
  height: 82px;
  width: auto;
  margin-bottom: 18px;
}

.entity-logo-erteks {
  height: 56px;
  width: auto;
  margin-bottom: 44px;
}

.entity-badge {
  display: inline-block;
  padding: 7px 18px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.entity-badge--dogsan {
  background: #ffffff;
  color: #0b0d11;
}

.entity-badge--erteks {
  background: var(--brand-red);
  color: #ffffff;
}

.entity-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.detail-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.96rem;
  color: #ffffff;
}

.detail-icon {
  width: 20px;
  height: 20px;
  color: var(--brand-red);
  flex-shrink: 0;
  margin-top: 3px;
}

.detail-label {
  display: block;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.detail-link {
  font-weight: 600;
  color: #ffffff;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.detail-link:hover {
  color: #ff6b70;
  border-bottom-color: #ff6b70;
}

/* Footer */
.site-footer {
  background: var(--bg-section-alt);
  border-top: 1px solid var(--border-subtle);
  padding: 28px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* Lightbox Modal */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(6, 8, 12, 0.95);
  backdrop-filter: blur(10px);
  display: none;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px;
}

.lightbox.is-open {
  display: flex;
}

.lightbox-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
  font-size: 0.88rem;
}

.lightbox-counter {
  font-weight: 600;
  color: var(--text-muted);
}

.lightbox-close {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.14);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 600;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.24);
}

.lightbox-stage {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  margin: 12px 0;
}

.lightbox-content {
  max-width: 92vw;
  max-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-content img,
.lightbox-content video {
  max-width: 92vw;
  max-height: 78vh;
  width: auto;
  height: auto;
  border-radius: 10px;
  object-fit: contain;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.65);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: background 0.15s ease;
}

.lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.28);
}

.lightbox-prev {
  left: 8px;
}

.lightbox-next {
  right: 8px;
}

.lightbox-caption {
  text-align: center;
  color: #ffffff;
  font-size: 0.94rem;
  font-weight: 500;
  padding-bottom: 4px;
}

/* Info Dialog for local file:// notice */
.notice-modal {
  position: fixed;
  inset: 0;
  z-index: 1100;
  background: rgba(6, 8, 12, 0.82);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.notice-modal.is-open {
  display: flex;
}

.notice-box {
  background: var(--bg-card-elevated);
  border: 1px solid var(--border-strong);
  color: #ffffff;
  max-width: 460px;
  width: 100%;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.notice-box h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.notice-box p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.notice-close-btn {
  display: inline-flex;
  padding: 9px 18px;
  border-radius: 8px;
  background: #ffffff;
  color: #0b0d11;
  font-size: 0.88rem;
  font-weight: 700;
}

/* Responsive Breakpoints */
@media (max-width: 1140px) {
  .main-nav {
    display: none;
  }
}

@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

@media (max-width: 820px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sustain-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .media-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stage-block {
    padding: 22px 18px;
  }

  .brand-logo-dogsan {
    height: 40px;
  }

  .brand-logo-erteks {
    height: 28px;
  }
}

@media (max-width: 540px) {
  .container {
    padding: 0 14px;
  }

  .header-inner {
    min-height: 68px;
    gap: 8px;
  }

  .brand-logo-dogsan {
    height: 24px;
  }

  .brand-logo-erteks {
    height: 17px;
  }

  .brand-divider {
    height: 20px;
  }

  .brand-pair {
    gap: 8px;
  }

  .header-actions {
    gap: 6px;
  }

  .lang-btn {
    padding: 5px 7px;
    font-size: 0.74rem;
  }

  .btn-download {
    padding: 8px 11px;
    font-size: 0.78rem;
    gap: 6px;
  }

  .btn-download .btn-text-desktop {
    display: none;
  }

  .btn-download .btn-text-mobile {
    display: inline;
  }

  .hero {
    padding: 44px 0 52px;
  }

  .media-card--video,
  .media-card--wide {
    grid-column: span 2;
  }

  .entity-card {
    padding: 26px 20px;
  }

  .entity-logo-dogsan {
    height: 60px;
  }

  .entity-logo-erteks {
    height: 42px;
    margin-bottom: 24px;
  }
}