:root {
  --header-h: 72px;
}

body {
  background:
    linear-gradient(rgb(255 255 255 / 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 0.018) 1px, transparent 1px),
    var(--bg);
  background-size: 72px 72px;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.nav-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

.dudu-logo {
  width: 92px;
  height: 46px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}

.dudu-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.brand-divider {
  width: 1px;
  height: 34px;
  flex: 0 0 auto;
  background: rgb(255 255 255 / 0.24);
}

.logo {
  display: inline-flex;
  align-items: center;
  width: 172px;
  height: 60px;
  flex: 0 0 auto;
}

.logo-icon {
  width: 172px;
  height: 60px;
  background-image: url("../images/brand/thunder-falcon-logo-horizontal.png");
  background-color: var(--bg);
  background-blend-mode: lighten;
  background-repeat: no-repeat;
  background-size: 172px 172px;
  background-position: center -52px;
}

.logo-copy {
  display: none;
}

.logo-cn {
  color: var(--fg);
  font-size: 23px;
  font-weight: 900;
}

.logo-en {
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 34px);
}

.nav-links > a:not(.btn) {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  transition: color 180ms ease;
}

.nav-links > a:not(.btn):hover,
.nav-links > a.active:not(.btn) {
  color: var(--fg);
}

.nav-cta {
  min-height: 40px;
  padding: 0 18px;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
}

.menu-button span,
.menu-button::before,
.menu-button::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.home-hero {
  min-height: 94svh;
  position: relative;
  display: grid;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
  background: #06101d;
}

.home-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: url("../images/thunder-falcon-ecosystem-hero.png") center / cover no-repeat;
  animation: hero-scale 1.2s ease-out both;
}

.home-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgb(5 14 26 / 0.98) 0%, rgb(5 14 26 / 0.86) 37%, rgb(5 14 26 / 0.1) 72%);
}

.hero-content {
  width: min(1280px, 100% - 48px);
  margin: 0 auto;
  padding: calc(var(--header-h) + 64px) 0 72px;
}

.hero-copy-block {
  max-width: 760px;
  animation: hero-enter 700ms 120ms ease-out both;
}

.hero-brand {
  margin-bottom: 18px;
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

.home-hero h1 {
  font-size: clamp(68px, 9vw, 132px);
  line-height: 0.95;
  text-shadow: 0 0 38px rgb(0 4 255 / 0.26);
}

.hero-line {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px 22px;
}

.hero-time {
  display: inline-flex;
  align-items: flex-end;
  gap: 7px;
  color: var(--warn);
}

.hero-time strong {
  font-family: var(--font-display);
  font-size: clamp(52px, 6vw, 82px);
  font-weight: 900;
  line-height: 0.88;
}

.hero-time small {
  padding-bottom: 4px;
  font-size: clamp(16px, 1.6vw, 22px);
  font-weight: 800;
}

.hero-charge-claim {
  padding-left: 22px;
  border-left: 1px solid rgb(255 255 255 / 0.32);
  color: var(--fg);
  font-size: clamp(24px, 2.7vw, 38px);
  font-weight: 800;
  line-height: 1.08;
}

.hero-description {
  max-width: 620px;
  margin-top: 20px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 22px;
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--accent), transparent);
  animation: scroll-pulse 1.8s ease-in-out infinite;
}

.proof-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--border);
  background: #071321;
}

.proof-item {
  min-height: 126px;
  padding: 28px clamp(20px, 3vw, 44px);
  border-right: 1px solid var(--border);
}

.proof-item:last-child {
  border-right: 0;
}

.proof-item strong {
  display: block;
  color: var(--warn);
  font: 800 clamp(28px, 3vw, 42px) / 1 var(--font-mono);
}

.proof-item strong small {
  font-family: var(--font-body);
  font-size: 0.42em;
  font-weight: 800;
}

.proof-item span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 14px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 42px;
}

.section-heading > div {
  max-width: 760px;
}

.section-heading p,
.body-copy {
  max-width: 620px;
  color: var(--muted);
  line-height: 1.8;
}

.section-heading h2 + p,
.page-hero h1 + p {
  margin-top: 16px;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.system-item {
  min-height: 300px;
  padding: 32px 26px;
  border-right: 1px solid var(--border);
  transition: background 180ms ease;
}

.system-item:last-child {
  border-right: 0;
}

.system-item:hover {
  background: rgb(0 4 255 / 0.055);
}

.system-index {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-text);
  font: 700 13px / 1.4 var(--font-body);
}

.system-index::before {
  content: "";
  width: 18px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--accent-text);
}

.system-item h3 {
  margin-top: 34px;
  font-size: 24px;
  font-weight: 700;
}

.system-item p {
  margin-top: 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.system-item a {
  display: inline-block;
  margin-top: 22px;
  color: var(--warn);
  font-weight: 800;
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  align-items: center;
  gap: clamp(44px, 7vw, 100px);
}

.feature-row + .feature-row {
  margin-top: clamp(80px, 10vw, 150px);
}

.feature-row.reverse .feature-media {
  order: 2;
}

.feature-media {
  min-height: 460px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: linear-gradient(145deg, #10283f, #071421);
}

.feature-media img {
  width: 100%;
  height: 100%;
  max-height: 620px;
  object-fit: contain;
  transition: transform 400ms ease;
}

.feature-media:hover img {
  transform: scale(1.025);
}

.feature-copy h2 {
  margin-bottom: 18px;
}

.feature-copy p {
  color: var(--muted);
  line-height: 1.85;
}

.feature-copy .claim-note {
  margin-top: 16px;
  padding-left: 14px;
  border-left: 2px solid var(--warn);
  color: var(--dim);
  font-size: 12px;
  line-height: 1.7;
}

.feature-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 28px;
  border-top: 1px solid var(--border);
}

.feature-facts div {
  padding: 18px 18px 18px 0;
  border-bottom: 1px solid var(--border);
}

.feature-facts strong {
  display: block;
  color: var(--accent-text);
  font-family: var(--font-mono);
}

.feature-facts span {
  color: var(--dim);
  font-size: 13px;
}

.page-hero {
  padding: calc(var(--header-h) + 76px) 0 72px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(circle at 82% 10%, rgb(0 4 255 / 0.2), transparent 34%),
    linear-gradient(180deg, #081828, #0a1929);
}

.page-hero p {
  max-width: 780px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.category-nav {
  position: sticky;
  top: var(--header-h);
  z-index: 30;
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  background: rgb(7 18 33 / 0.94);
  backdrop-filter: blur(14px);
  scrollbar-width: none;
  scroll-snap-type: x proximity;
}

.category-nav::-webkit-scrollbar { display: none; }

.category-nav a {
  flex: 1 0 auto;
  min-width: 160px;
  padding: 17px 22px;
  border-right: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
  font-size: 14px;
  font-weight: 800;
  scroll-snap-align: start;
}

.category-nav a:hover {
  color: var(--fg);
  background: rgb(0 4 255 / 0.075);
}

.section[id] {
  scroll-margin-top: calc(var(--header-h) + 58px);
}

.product-lead {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1.18fr);
  align-items: center;
  gap: clamp(38px, 6vw, 86px);
  margin-bottom: 44px;
}

.product-visual {
  min-height: 420px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--border-s);
  border-radius: var(--radius-m);
  background: linear-gradient(145deg, #122c44, #071421);
}

.product-visual img {
  width: 100%;
  max-height: 520px;
  object-fit: contain;
}

.product-summary p {
  margin-top: 18px;
  color: var(--muted);
  line-height: 1.85;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.chip {
  padding: 7px 11px;
  border: 1px solid var(--border-s);
  border-radius: 999px;
  color: var(--accent-text);
  background: rgb(0 4 255 / 0.07);
  font-size: 12px;
  font-weight: 800;
}

.table-panel {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: rgb(7 18 33 / 0.82);
}

.table-title {
  padding: 17px 20px;
  border-bottom: 1px solid var(--border);
  background: rgb(0 4 255 / 0.07);
  font-weight: 800;
}

.table-scroll {
  overflow-x: auto;
}

.product-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  font-size: 14px;
}

.product-table th,
.product-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.product-table th {
  color: var(--accent-text);
  font-size: 12px;
  font-weight: 800;
}

.product-table tbody tr:last-child td {
  border-bottom: 0;
}

.product-table tbody tr:hover td {
  background: rgb(255 255 255 / 0.024);
}

.product-table .yes {
  color: var(--warn);
  font-weight: 900;
  text-align: center;
}

.product-table .no {
  color: var(--dim);
  text-align: center;
}

.source-note {
  margin-top: 18px;
  padding: 16px 18px;
  border-left: 3px solid var(--warn);
  background: rgb(245 166 35 / 0.075);
  color: #ffd79a;
  font-size: 13px;
  line-height: 1.7;
}

.series-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 38px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.series-item {
  padding: 26px;
  border-right: 1px solid var(--border);
}

.series-item:last-child {
  border-right: 0;
}

.series-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.series-item h3 {
  margin-top: 20px;
  font-size: 21px;
}

.series-item p {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.battery-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 34px 0;
}

.battery-item {
  min-height: 330px;
  display: grid;
  grid-template-rows: 1fr auto;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: #eef3f8;
}

.battery-item img {
  width: 100%;
  height: 270px;
  object-fit: contain;
}

.battery-item div {
  padding: 16px 18px;
  background: var(--surface);
}

.battery-item strong {
  display: block;
}

.battery-item span {
  color: var(--muted);
  font-size: 13px;
}

.platform-layout {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 42px;
  align-items: start;
}

.platform-tabs {
  position: sticky;
  top: calc(var(--header-h) + 30px);
  display: grid;
  border-top: 1px solid var(--border);
}

.platform-tab {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 10px;
  padding: 20px 12px;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  text-align: left;
  cursor: pointer;
}

.platform-tab span {
  color: var(--dim);
  font-family: var(--font-body);
  font-weight: 700;
}

.platform-tab strong {
  font-size: 17px;
}

.platform-tab.active {
  color: var(--fg);
  background: rgb(0 4 255 / 0.07);
}

.platform-tab.active span {
  color: var(--accent-text);
}

.platform-screen {
  overflow: hidden;
  border: 1px solid var(--border-s);
  border-radius: var(--radius-m);
  background: #06101d;
}

.platform-screen img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.platform-panel {
  display: none;
  margin-top: 32px;
  animation: panel-enter 240ms ease both;
}

.platform-panel.active {
  display: block;
}

.platform-panel > p {
  max-width: 760px;
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.8;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 28px;
  border-top: 1px solid var(--border);
}

.capability {
  padding: 24px 24px 24px 0;
  border-bottom: 1px solid var(--border);
}

.capability:nth-child(odd) {
  border-right: 1px solid var(--border);
}

.capability:nth-child(even) {
  padding-left: 24px;
}

.capability h4 {
  color: var(--accent-text);
  font-size: 16px;
}

.capability p {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.architecture {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.architecture div {
  padding: 26px;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.architecture strong {
  color: var(--accent-text);
}

.architecture p {
  margin-top: 9px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.service-list {
  border-top: 1px solid var(--border);
}

.service-item {
  display: grid;
  grid-template-columns: 90px minmax(220px, 0.75fr) 1.25fr;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.service-item .number {
  color: var(--accent-text);
  font: 800 14px / 1 var(--font-body);
}

.service-item h3 {
  font-size: 24px;
}

.service-item p {
  color: var(--muted);
  line-height: 1.75;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.support-item {
  min-height: 230px;
  padding: 28px 22px;
  border-right: 1px solid var(--border);
}

.support-item:last-child {
  border-right: 0;
}

.support-item strong {
  color: var(--warn);
  font: 800 26px / 1 var(--font-mono);
}

.support-item h3 {
  margin-top: 28px;
  font-size: 19px;
}

.support-item p {
  margin-top: 9px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.values-line {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 52px;
  border-top: 1px solid var(--border);
}

.values-line div {
  padding: 24px 16px 0 0;
}

.values-line strong {
  display: block;
  color: var(--accent-text);
  font-size: 19px;
}

.values-line span {
  color: var(--dim);
  font-size: 13px;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 48px;
  align-items: start;
}

.map-panel {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: var(--surface);
}

.map-panel img {
  width: 100%;
  aspect-ratio: 856 / 529;
  object-fit: cover;
}

.map-caption {
  padding: 18px 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

.map-caption strong {
  display: block;
  margin-bottom: 4px;
  color: var(--fg);
}

.contact-list {
  border-top: 1px solid var(--border);
}

.contact-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.contact-row strong {
  color: var(--accent-text);
  font-size: 13px;
}

.contact-row a,
.contact-row span {
  color: var(--muted);
}

.final-cta {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border);
  background: #071321;
}

.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 40%, rgb(0 4 255 / 0.18), transparent 34%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 44px;
}

.cta-inner p {
  max-width: 660px;
  margin-top: 14px;
  color: var(--muted);
}

.site-footer {
  padding: 48px 0 26px;
  border-top: 1px solid var(--border);
  background: #050e19;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 34px;
}

.footer-brand p,
.footer-col a,
.footer-bottom {
  color: var(--dim);
  font-size: 13px;
}

.footer-brand .brand-lockup {
  margin-bottom: 14px;
}

.footer-brand .logo {
  margin-bottom: 0;
}

.footer-brand .logo-icon {
  background-color: #050e19;
}

.footer-brand p {
  max-width: 360px;
  line-height: 1.7;
}

.footer-col h4 {
  margin-bottom: 13px;
  color: var(--muted);
  font-size: 13px;
}

.footer-col a {
  display: block;
  padding: 4px 0;
}

.footer-col a:hover {
  color: var(--fg);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-bottom a {
  color: var(--muted);
  transition: color 180ms ease;
}

.footer-bottom a:hover {
  color: var(--fg);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes hero-enter {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes hero-scale {
  from { opacity: 0.7; transform: scale(1.035); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.35; transform: scaleY(0.7); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

@keyframes panel-enter {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    padding: 26px;
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    background: #071321;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open { display: flex; }
  .menu-button { display: block; }
  .home-hero::before { background-position: 61% center; }
  .home-hero::after { background: linear-gradient(90deg, rgb(5 14 26 / 0.98), rgb(5 14 26 / 0.58) 65%, rgb(5 14 26 / 0.2)); }
  .system-grid,
  .support-grid,
  .architecture { grid-template-columns: repeat(2, 1fr); }
  .system-item:nth-child(2),
  .support-item:nth-child(2) { border-right: 0; }
  .system-item:nth-child(-n+2),
  .support-item:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .feature-row,
  .product-lead,
  .contact-grid { grid-template-columns: 1fr; }
  .feature-row.reverse .feature-media { order: 0; }
  .series-grid,
  .battery-gallery { grid-template-columns: 1fr; }
  .series-item { border-right: 0; border-bottom: 1px solid var(--border); }
  .series-item:last-child { border-bottom: 0; }
  .platform-layout { grid-template-columns: 1fr; }
  .platform-tabs { position: static; grid-template-columns: repeat(4, 1fr); }
  .platform-tab { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .container,
  .hero-content { width: calc(100% - 32px); padding-left: 0; padding-right: 0; }
  .brand-lockup { gap: 10px; }
  .dudu-logo { width: 72px; height: 36px; }
  .brand-divider { height: 28px; }
  .logo { width: 130px; height: 50px; }
  .logo-icon { width: 130px; height: 50px; background-size: 130px 130px; background-position: center -39px; }
  .home-hero { min-height: calc(100svh - 34px); }
  .home-hero::before { background-position: 68% center; opacity: 0.66; }
  .home-hero::after { background: linear-gradient(180deg, rgb(5 14 26 / 0.72), rgb(5 14 26 / 0.94) 68%); }
  .hero-content { display: flex; align-items: end; min-height: calc(100svh - 34px); padding-bottom: 76px; }
  .home-hero h1 { font-size: clamp(62px, 21vw, 92px); }
  .hero-line { gap: 12px 14px; }
  .hero-time strong { font-size: clamp(50px, 16vw, 66px); }
  .hero-charge-claim { padding-left: 14px; font-size: clamp(22px, 7vw, 28px); }
  .hero-description { font-size: 16px; }
  .proof-band { grid-template-columns: 1fr 1fr; }
  .proof-item:nth-child(2) { border-right: 0; }
  .proof-item:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .section-heading,
  .cta-inner { align-items: flex-start; flex-direction: column; }
  .system-grid,
  .support-grid,
  .architecture,
  .capability-grid { grid-template-columns: 1fr; }
  .system-item,
  .support-item { min-height: auto; border-right: 0; border-bottom: 1px solid var(--border); }
  .feature-media,
  .product-visual { min-height: 310px; }
  .feature-facts { grid-template-columns: 1fr; }
  .platform-tabs { grid-template-columns: 1fr 1fr; }
  .capability,
  .capability:nth-child(even) { padding: 20px 0; border-right: 0; }
  .service-item { grid-template-columns: 50px 1fr; }
  .service-item p { grid-column: 2; }
  .values-line { grid-template-columns: 1fr 1fr; }
  .contact-row { grid-template-columns: 1fr; gap: 6px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

@media (max-width: 480px) {
  .nav-inner { gap: 12px; }
  .brand-lockup { gap: 8px; }
  .dudu-logo { width: 64px; height: 32px; }
  .logo { width: 120px; height: 46px; }
  .logo-icon { width: 120px; height: 46px; background-size: 120px 120px; background-position: center -36px; }
  .footer-legal { align-items: flex-start; gap: 8px; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .home-hero::before,
  .hero-copy-block,
  .hero-scroll { animation: none; }
  .reveal { opacity: 1; transform: none; }
}