:root {
  --ink: #111315;
  --ink-2: #23272a;
  --muted: #697176;
  --line: rgba(17, 19, 21, 0.14);
  --paper: #f4f5f2;
  --paper-2: #e7ebe7;
  --white: #ffffff;
  --cyan: #12e7e7;
  --cyan-2: #00a9b5;
  --acid: #dfff3f;
  --dark: #0a0d0f;
  --dark-2: #161a1d;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

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

button,
input,
select {
  font: inherit;
}

.scanline {
  display: none;
}

.site-header {
  position: fixed;
  inset: 18px 22px auto;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 12px 12px 12px 18px;
  color: var(--white);
  background: rgba(8, 11, 13, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(20px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(18, 231, 231, 0.36));
}

.brand strong,
.brand em {
  display: block;
  line-height: 1.05;
}

.brand strong {
  font-size: 16px;
  font-weight: 900;
}

.brand em {
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 25px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 800;
}

.site-nav a:hover {
  color: var(--cyan);
}

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

.lang-switch {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.lang-switch select {
  min-height: 36px;
  width: 168px;
  padding: 0 30px 0 10px;
  color: rgba(255, 255, 255, 0.82);
  background:
    linear-gradient(45deg, transparent 50%, rgba(18, 231, 231, 0.88) 50%) calc(100% - 16px) calc(50% - 3px) / 6px 6px no-repeat,
    linear-gradient(135deg, rgba(18, 231, 231, 0.88) 50%, transparent 50%) calc(100% - 11px) calc(50% - 3px) / 6px 6px no-repeat,
    transparent;
  border: 0;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  outline: 0;
}

.lang-switch select option {
  color: var(--ink);
  background: var(--white);
}

[dir="rtl"] .lang-switch select {
  padding: 0 10px 0 30px;
  background:
    linear-gradient(45deg, transparent 50%, rgba(18, 231, 231, 0.88) 50%) 11px calc(50% - 3px) / 6px 6px no-repeat,
    linear-gradient(135deg, rgba(18, 231, 231, 0.88) 50%, transparent 50%) 16px calc(50% - 3px) / 6px 6px no-repeat,
    transparent;
}

.nav-cta {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  color: var(--dark);
  background: var(--cyan);
  font-size: 13px;
  font-weight: 900;
}

.hero {
  min-height: 100vh;
  padding: 118px 4.8vw 40px;
  color: var(--white);
  background:
    radial-gradient(circle at 76% 18%, rgba(18, 231, 231, 0.2), transparent 28%),
    linear-gradient(115deg, #080a0c 0%, #171b1d 46%, #050607 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(360px, 0.72fr) minmax(560px, 1.28fr);
  gap: 10px;
  align-items: center;
  min-height: calc(100vh - 220px);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 650px;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.eyebrow.dark {
  color: var(--cyan-2);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(54px, 8vw, 116px);
  line-height: 0.94;
  font-weight: 900;
  letter-spacing: 0;
  text-wrap: balance;
}

.lead {
  max-width: 620px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.primary-btn,
.ghost-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  font-weight: 900;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.primary-btn {
  color: var(--dark);
  background: var(--cyan);
  border-color: var(--cyan);
}

.ghost-btn {
  color: var(--white);
  background: rgba(255, 255, 255, 0.05);
}

.hero-product {
  position: relative;
  min-height: 620px;
  display: grid;
  place-items: center;
}

.product-halo {
  position: absolute;
  inset: 18% 2% 8% 12%;
  background:
    radial-gradient(circle at 62% 44%, rgba(18, 231, 231, 0.24), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent 56%);
  clip-path: polygon(13% 2%, 100% 0, 92% 88%, 5% 100%, 0 25%);
  opacity: 0.9;
}

.hero-product img {
  position: relative;
  z-index: 2;
  width: min(1040px, 112%);
  max-width: none;
  filter: drop-shadow(0 38px 48px rgba(0, 0, 0, 0.56));
}

.hero-statbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 24px;
  background: rgba(255, 255, 255, 0.14);
}

.hero-statbar div {
  padding: 22px 20px;
  background: rgba(255, 255, 255, 0.055);
}

.hero-statbar span {
  display: block;
  color: var(--cyan);
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 900;
  line-height: 1;
}

.hero-statbar p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  font-weight: 700;
}

.positioning {
  display: grid;
  grid-template-columns: 0.9fr 1fr;
  gap: 54px;
  padding: 92px 5vw;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

h2 {
  margin-bottom: 0;
  font-size: clamp(38px, 5.5vw, 76px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: 0;
  text-wrap: balance;
}

.positioning-copy p,
.section-head p,
.flagship-copy p,
.model-card p,
.capability-list p,
.workflow-item p,
.market-grid p,
.contact-intro p,
.spec-note p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.76;
}

.positioning-copy p {
  margin: 34px 0 0;
  font-size: 19px;
}

.series-section,
.markets-section {
  padding: 106px 5vw;
}

.section-head {
  max-width: 940px;
  margin-bottom: 46px;
}

.section-head h2 {
  max-width: 920px;
}

.flagship-card {
  display: grid;
  grid-template-columns: minmax(340px, 0.72fr) minmax(520px, 1.28fr);
  gap: 24px;
  align-items: center;
  min-height: 620px;
  padding: 42px;
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(18, 231, 231, 0.14), transparent 42%),
    #0d1012;
  overflow: hidden;
}

.flagship-copy {
  position: relative;
  z-index: 2;
}

.model-tag {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 7px 10px;
  color: var(--dark);
  background: var(--acid);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.flagship-copy h3 {
  margin-bottom: 18px;
  color: var(--cyan);
  font-size: clamp(80px, 12vw, 160px);
  line-height: 0.82;
  font-weight: 900;
}

.flagship-copy p {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.68);
}

.model-specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 34px 0 0;
}

.model-specs div {
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 14px;
}

.model-specs dt {
  color: var(--white);
  font-size: 38px;
  font-weight: 900;
}

.model-specs dd {
  margin: 5px 0 0;
  color: rgba(255, 255, 255, 0.56);
  font-size: 12px;
  line-height: 1.45;
}

.flagship-image {
  position: relative;
}

.flagship-image::before {
  content: "";
  position: absolute;
  inset: 18% 3% 6% 18%;
  background: radial-gradient(circle at 55% 50%, rgba(18, 231, 231, 0.18), transparent 52%);
}

.flagship-image img {
  position: relative;
  z-index: 2;
  width: 112%;
  max-width: none;
  margin-left: -5%;
  filter: drop-shadow(0 34px 44px rgba(0, 0, 0, 0.55));
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.model-card {
  display: grid;
  grid-template-rows: 320px auto;
  min-height: 560px;
  background: var(--white);
  border: 1px solid var(--line);
  overflow: hidden;
}

.model-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 12px 22px 6px;
  background:
    repeating-linear-gradient(0deg, rgba(17, 19, 21, 0.055) 0 1px, transparent 1px 8px),
    linear-gradient(180deg, rgba(18, 231, 231, 0.08), transparent 56%),
    var(--paper-2);
}

.model-card-c41 img {
  padding: 8px 20px 0;
}

.model-card-c31 img,
.model-card-c21 img {
  padding: 6px 10px 0;
}

.model-card div {
  padding: 28px 28px 34px;
}

.model-card span {
  color: var(--cyan-2);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.1em;
}

h3 {
  margin-bottom: 12px;
  font-size: 25px;
  line-height: 1.2;
  font-weight: 900;
}

.system-section {
  display: grid;
  grid-template-columns: minmax(440px, 1.08fr) minmax(360px, 0.92fr);
  gap: 58px;
  align-items: center;
  padding: 106px 5vw;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(18, 231, 231, 0.08), transparent 34%),
    var(--dark);
}

.system-visual {
  min-height: 560px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 50% 44%, rgba(18, 231, 231, 0.16), transparent 44%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.065) 0 1px, transparent 1px 9px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), transparent);
  overflow: hidden;
}

.system-visual img {
  width: 112%;
  max-width: none;
  filter: drop-shadow(0 32px 42px rgba(0, 0, 0, 0.52));
}

.system-copy h2 {
  margin-bottom: 34px;
}

.capability-list {
  display: grid;
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.capability-list article {
  padding: 24px;
  background: var(--dark-2);
}

.capability-list strong {
  display: block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-size: 18px;
}

.capability-list p {
  margin: 0;
  color: rgba(255, 255, 255, 0.62);
}

.workflow-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.workflow-item {
  min-height: 280px;
  padding: 34px 28px;
  background: var(--paper-2);
}

.workflow-item span {
  display: block;
  margin-bottom: 70px;
  color: var(--cyan-2);
  font-size: 13px;
  font-weight: 900;
}

.spec-section {
  padding: 106px 5vw;
  background: var(--white);
}

.dark-head .eyebrow {
  color: var(--cyan-2);
}

.spec-layout {
  display: grid;
  grid-template-columns: minmax(420px, 1fr) minmax(320px, 0.52fr);
  gap: 36px;
  align-items: start;
}

.spec-table {
  border-top: 2px solid var(--ink);
}

.spec-table div {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.spec-table span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.spec-table strong {
  font-size: clamp(18px, 2.6vw, 30px);
  line-height: 1.25;
}

.spec-note {
  position: sticky;
  top: 110px;
  padding: 22px;
  background: var(--paper-2);
}

.spec-note img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  object-position: center;
  margin-bottom: 16px;
}

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

.market-grid article {
  min-height: 280px;
  padding: 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.36);
}

.contact-section {
  padding: 0 5vw 112px;
  scroll-margin-top: 112px;
}

.contact-shell {
  border-top: 2px solid var(--ink);
}

.contact-intro {
  display: grid;
  grid-template-columns: minmax(360px, 0.94fr) minmax(360px, 0.66fr);
  gap: 54px;
  align-items: end;
  padding: 88px 0 36px;
}

.contact-intro p {
  margin: 0;
}

.lead-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(420px, 0.64fr);
  gap: 44px;
  align-items: start;
  padding: 42px;
  color: var(--white);
  background:
    linear-gradient(90deg, rgba(18, 231, 231, 0.16), transparent 36%),
    #0b0d0f;
  border-left: 8px solid var(--cyan);
}

.contact-label,
.manager-card span,
.founder-card span {
  display: block;
  color: var(--cyan-2);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: none;
}

.lead-panel .contact-label,
.lead-copy p {
  color: rgba(255, 255, 255, 0.68);
}

.lead-copy h3 {
  margin: 10px 0 14px;
  color: var(--cyan);
  max-width: 12ch;
  font-size: clamp(34px, 4.2vw, 54px);
  line-height: 1.06;
  text-wrap: balance;
}

.lead-copy p {
  max-width: 580px;
  font-size: 17px;
  line-height: 1.7;
  text-wrap: pretty;
}

.contact-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  max-width: 940px;
  margin-top: 32px;
  background: rgba(255, 255, 255, 0.14);
}

.contact-meta div {
  min-height: 96px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.055);
}

.contact-meta span {
  display: block;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
  font-weight: 900;
}

.contact-meta strong {
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  line-height: 1.48;
}

.email-hub {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 1px;
  max-width: 940px;
  margin-top: 1px;
  background: rgba(255, 255, 255, 0.14);
}

.email-hub-head,
.email-list a {
  min-height: 74px;
  padding: 15px 16px;
  background: rgba(255, 255, 255, 0.055);
}

.email-hub-head span,
.email-list span {
  display: block;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 12px;
  font-weight: 900;
}

.email-hub-head strong {
  color: var(--cyan);
  font-size: 16px;
  line-height: 1.35;
}

.email-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
}

.email-list a {
  display: block;
  min-width: 0;
  transition: background 160ms ease, color 160ms ease;
}

.email-list a:hover {
  color: var(--dark);
  background: var(--cyan);
}

.email-list a:hover span,
.email-list a:hover strong {
  color: var(--dark);
}

.email-list strong {
  display: block;
  overflow-wrap: anywhere;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  line-height: 1.35;
}

.contact-form {
  display: grid;
  gap: 15px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.075);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  font-weight: 900;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 0 13px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.085);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 0;
  outline: 0;
  transition: border-color 160ms ease, background-color 160ms ease, box-shadow 160ms ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(18, 231, 231, 0.36);
  box-shadow: inset 0 0 0 1px rgba(18, 231, 231, 0.14);
}

.contact-form select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 44px;
  color-scheme: dark;
  background:
    linear-gradient(45deg, transparent 50%, rgba(18, 231, 231, 0.78) 50%) calc(100% - 18px) calc(50% - 3px) / 7px 7px no-repeat,
    linear-gradient(135deg, rgba(18, 231, 231, 0.78) 50%, transparent 50%) calc(100% - 12px) calc(50% - 3px) / 7px 7px no-repeat,
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
    #1b1f23;
  border-color: rgba(255, 255, 255, 0.14);
}

.contact-form select option,
.contact-form select optgroup {
  color: rgba(255, 255, 255, 0.92);
  background: #171a1d;
}

.contact-form select option:checked {
  color: rgba(255, 255, 255, 0.96);
  background: #2b3439;
}

.contact-form textarea {
  min-height: 112px;
  padding-top: 13px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.34);
}

.contact-form button {
  min-height: 52px;
  color: var(--dark);
  background: var(--cyan);
  border: 0;
  font-weight: 900;
  cursor: pointer;
}

.contact-form button:disabled {
  cursor: default;
  opacity: 0.72;
}

.form-hint {
  margin: -2px 0 0;
  color: rgba(255, 255, 255, 0.52);
  font-size: 12px;
  line-height: 1.62;
}

.form-hint a {
  color: var(--cyan);
  font-weight: 900;
}

.form-status {
  min-height: 20px;
  margin: -5px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  line-height: 1.5;
}

.qr-frame {
  display: grid;
  justify-items: center;
  gap: 10px;
  width: 136px;
  margin: 0;
  padding: 10px;
  background: var(--white);
  border: 1px solid rgba(17, 19, 21, 0.1);
}

.qr-frame-large {
  width: 246px;
  justify-self: end;
}

.qr-frame img,
.region-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  background: var(--white);
}

.qr-frame figcaption {
  color: var(--ink);
  font-size: 11px;
  font-weight: 900;
  line-height: 1.25;
  text-align: center;
}

.contact-directory {
  display: grid;
  gap: 36px;
  margin-top: 36px;
}

.contact-group {
  min-width: 0;
}

.contact-group-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 0 0 16px;
  border-bottom: 2px solid var(--ink);
}

.contact-group-head h3 {
  margin: 0;
  font-size: clamp(28px, 3.4vw, 44px);
}

.manager-card h4,
.founder-card h4,
.region-card h4 {
  margin: 7px 0 8px;
  color: var(--ink);
  font-size: 25px;
  line-height: 1.15;
}

.manager-card p,
.founder-card p,
.region-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.62;
}

.channel-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.channel-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 10px;
  color: var(--ink);
  background: rgba(18, 231, 231, 0.14);
  border: 1px solid rgba(18, 231, 231, 0.34);
  font-size: 12px;
  font-weight: 900;
}

.channel-strip a:hover {
  background: var(--cyan);
}

.region-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.region-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 112px;
  gap: 22px;
  align-items: start;
  min-height: 188px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.66);
}

.region-card img {
  width: 112px;
  padding: 6px;
  border: 1px solid rgba(17, 19, 21, 0.1);
}

.manager-card,
.founder-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  min-height: 220px;
  padding: 28px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}

.founder-card {
  background:
    linear-gradient(90deg, rgba(18, 231, 231, 0.08), transparent 46%),
    var(--paper-2);
}

.qr-pair {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 5vw;
  color: rgba(255, 255, 255, 0.58);
  background: var(--dark);
  font-size: 13px;
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: var(--white);
  margin-bottom: 5px;
}

.site-footer a {
  color: var(--cyan);
  font-weight: 800;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

@media (max-width: 1120px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .hero-grid,
  .positioning,
  .flagship-card,
  .system-section,
  .spec-layout,
  .lead-panel,
  .contact-intro,
  .contact-directory,
  .manager-card,
  .founder-card {
    grid-template-columns: 1fr;
  }

  .hero-product {
    min-height: 520px;
  }

  .model-grid,
  .market-grid,
  .region-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .qr-frame-large {
    justify-self: start;
  }

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

  .email-hub {
    grid-template-columns: 1fr;
  }

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

  .workflow-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .spec-note {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-header {
    inset: 10px 10px auto;
    padding: 10px;
  }

  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .brand strong {
    font-size: 14px;
  }

  .brand em {
    font-size: 10px;
  }

  .nav-cta {
    min-height: 34px;
    padding: 0 11px;
    font-size: 12px;
    white-space: nowrap;
  }

  .header-actions {
    gap: 8px;
  }

  .lang-switch {
    min-height: 34px;
  }

  .lang-switch select {
    min-height: 26px;
    width: 128px;
    font-size: 11px;
  }

  .hero {
    padding: 104px 18px 28px;
  }

  .hero-grid {
    min-height: auto;
  }

  h1 {
    font-size: clamp(46px, 15vw, 70px);
  }

  .lead {
    font-size: 16px;
  }

  .hero-product {
    min-height: 330px;
    margin-top: 20px;
  }

  .hero-product img {
    width: 148%;
  }

  .hero-statbar,
  .model-grid,
  .workflow-band,
  .market-grid,
  .model-specs {
    grid-template-columns: 1fr;
  }

  .positioning,
  .series-section,
  .system-section,
  .spec-section,
  .markets-section {
    padding: 76px 18px;
  }

  .flagship-card {
    min-height: auto;
    padding: 30px 20px;
  }

  .flagship-copy h3 {
    font-size: 86px;
  }

  .flagship-image img {
    width: 142%;
    margin-left: -20%;
  }

  .model-card {
    grid-template-rows: 260px auto;
    min-height: auto;
  }

  .system-visual {
    min-height: 320px;
  }

  .system-visual img {
    width: 150%;
  }

  .workflow-item {
    min-height: auto;
  }

  .workflow-item span {
    margin-bottom: 32px;
  }

  .spec-table div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .contact-section {
    padding: 0 18px 76px;
  }

  .contact-intro {
    gap: 22px;
    padding: 68px 0 28px;
  }

  .lead-panel {
    gap: 28px;
    padding: 24px 16px 20px;
    border-left-width: 5px;
  }

  .lead-copy h3 {
    font-size: clamp(30px, 10vw, 42px);
    line-height: 1.04;
  }

  .lead-copy p {
    font-size: 14px;
    line-height: 1.68;
  }

  .contact-meta {
    margin-top: 24px;
  }

  .contact-meta div {
    min-height: auto;
    padding: 14px;
  }

  .contact-meta strong {
    font-size: 14px;
  }

  .email-hub-head,
  .email-list a {
    min-height: auto;
    padding: 14px;
  }

  .email-hub-head strong {
    font-size: 15px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form {
    padding: 20px 16px;
  }

  h1,
  h2,
  h3,
  .lead,
  .nav-cta,
  .primary-btn,
  .ghost-btn,
  .channel-strip a,
  .contact-form button {
    overflow-wrap: anywhere;
  }

  .contact-form input,
  .contact-form select,
  .contact-form textarea {
    min-height: 46px;
  }

  .qr-frame-large {
    width: min(190px, 100%);
  }

  .contact-directory {
    gap: 28px;
    margin-top: 28px;
  }

  .contact-group-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-bottom: 14px;
  }

  .contact-group-head h3 {
    font-size: clamp(24px, 8vw, 34px);
  }

  .contact-directory,
  .region-grid,
  .region-card,
  .manager-card,
  .founder-card {
    grid-template-columns: 1fr;
  }

  .manager-card,
  .founder-card {
    gap: 16px;
    min-height: auto;
    padding: 18px;
  }

  .region-card {
    gap: 16px;
    min-height: auto;
    padding: 18px;
  }

  .region-card img {
    width: 112px;
    justify-self: start;
  }

  .manager-card h4,
  .founder-card h4,
  .region-card h4 {
    font-size: 22px;
  }

  .qr-frame {
    width: min(128px, calc(50vw - 30px));
    padding: 8px;
  }

  .qr-pair {
    justify-content: flex-start;
  }

  .email-list {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 430px) {
  .site-header {
    grid-template-columns: 1fr;
    justify-items: start;
    gap: 8px;
  }

  .nav-cta {
    justify-self: start;
  }

  .header-actions {
    justify-self: stretch;
    width: 100%;
  }

  .hero {
    padding-top: 140px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .primary-btn,
  .ghost-btn,
  .nav-cta {
    width: 100%;
  }

  .lang-switch,
  .lang-switch select {
    width: 100%;
  }

  .contact-section {
    padding: 0 14px 64px;
  }

  .contact-intro {
    padding-top: 60px;
  }

  .lead-panel {
    gap: 24px;
    padding: 22px 14px 18px;
  }

  .contact-meta {
    margin-top: 20px;
  }

  .contact-form {
    padding: 18px 14px;
  }

  .channel-strip a {
    width: 100%;
    justify-content: center;
  }

  .qr-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: stretch;
  }

  .qr-frame {
    width: 100%;
  }

  .region-card img {
    width: 104px;
  }
}