:root {
  --ink: #111827;
  --muted: #5d6677;
  --line: #e7ebf2;
  --panel: #ffffff;
  --soft: #f5f7fb;
  --blue: #173a6a;
  --cyan: #0e7891;
  --green: #15a66a;
  --dark: #08111f;
  --shadow: 0 24px 70px rgba(13, 24, 44, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 6vw;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(231, 235, 242, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 6px;
}

.brand-name {
  font-size: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 6px;
  color: #2c3547;
  transition: background 160ms ease, color 160ms ease;
}

.site-nav a:hover {
  color: var(--ink);
  background: var(--soft);
}

.site-nav a.active {
  color: #fff !important;
  background: var(--ink);
}

.nav-cta {
  color: #2c3547 !important;
  background: transparent;
}

.lang-toggle,
.nav-toggle {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  min-width: 40px;
  min-height: 40px;
  padding: 0;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.lang-toggle:hover {
  border-color: #cfd6e3;
  background: var(--soft);
}

.nav-toggle {
  display: none;
  width: 42px;
  font-size: 20px;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(520px, 1.18fr);
  align-items: center;
  gap: 0;
  min-height: min(760px, calc(100vh - 72px));
  padding: 64px 0 72px 6vw;
  overflow: hidden;
  background:
    radial-gradient(circle at 74% 34%, rgba(23, 58, 106, 0.18), transparent 38%),
    linear-gradient(90deg, #fff 0%, #fff 32%, #f7fbff 66%, #eef5ff 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, 0.98) 34%, rgba(255, 255, 255, 0.4) 52%, transparent 72%),
    linear-gradient(180deg, transparent 72%, rgba(255, 255, 255, 0.72) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(40px, 5.2vw, 76px);
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

.page-hero h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(34px, 4.2vw, 58px);
  line-height: 1.12;
  letter-spacing: 0;
  text-wrap: balance;
}

.hero-copy,
.page-hero p {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-weight: 800;
  font-size: 14px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
}

.button.primary {
  color: #fff;
  border-color: var(--blue);
  background: var(--blue);
}

.button.secondary {
  color: var(--ink);
  background: #fff;
}

.download-body {
  min-height: 100vh;
  background:
    linear-gradient(180deg, #f7f9fc 0%, #ffffff 42%),
    #ffffff;
}

.download-header {
  position: static;
}

.download-nav {
  color: var(--muted);
  font-weight: 700;
}

.download-page {
  width: min(1120px, 88vw);
  margin: 0 auto;
  padding: 64px 0 86px;
}

.download-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 42px;
  align-items: end;
  padding: 56px 0 44px;
}

.download-hero h1 {
  max-width: 760px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}

.download-hero p:not(.eyebrow) {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.release-summary {
  display: grid;
  gap: 8px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 46px rgba(17, 24, 39, 0.08);
}

.release-label,
.release-summary span:last-child {
  color: var(--muted);
  font-size: 14px;
}

.release-summary strong {
  font-size: 34px;
  line-height: 1.1;
}

.download-panel,
.download-guidelines {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 60px rgba(13, 24, 44, 0.08);
}

.download-panel {
  padding: 34px;
}

.download-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.download-panel-head h2,
.release-notes h2,
.download-guidelines h2 {
  margin: 0;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: 0;
}

.release-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  color: #0f5f42;
  background: #e8f7ef;
  font-size: 14px;
  font-weight: 800;
  white-space: nowrap;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.download-card {
  display: grid;
  grid-template-columns: 50px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  min-height: 190px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
}

.platform-icon {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border-radius: 8px;
  color: #fff;
  background: var(--dark);
  font-weight: 900;
}

.download-card h3 {
  margin: 0 0 6px;
  font-size: 20px;
  line-height: 1.2;
}

.download-card p {
  margin: 0;
  color: var(--muted);
}

.download-button {
  grid-column: 1 / -1;
  width: 100%;
  margin-top: 16px;
}

.download-button[aria-disabled="true"] {
  color: #7b8494;
  border-color: #d8dee8;
  background: #eef2f7;
  cursor: not-allowed;
}

.release-notes {
  margin-top: 28px;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.release-notes ul,
.download-guidelines ol {
  margin: 14px 0 0;
  padding-left: 22px;
  color: var(--muted);
}

.release-notes li,
.download-guidelines li {
  margin: 8px 0;
}

.download-guidelines {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  margin-top: 22px;
  padding: 30px 34px;
}

.download-guidelines p {
  margin: 12px 0 0;
  color: var(--muted);
}

.hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 560px;
  margin-left: -7vw;
  z-index: 0;
}

.hero-product-matrix {
  width: min(84vw, 1120px);
  max-height: 100%;
  object-fit: cover;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  transform: translateX(-2vw);
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.18) 10%, #000 28%, #000 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.18) 10%, #000 28%, #000 100%);
}

.dashboard {
  position: absolute;
  inset: 20px 0 0;
  padding: 22px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.dash-top {
  display: flex;
  gap: 8px;
}

.dash-top span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.metric-grid div,
.product-card,
.detail-card,
.solution-grid article,
.contact-form,
.contact-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.metric-grid div {
  min-height: 112px;
  padding: 16px;
}

.metric-grid strong,
.metric-grid em {
  display: block;
}

.metric-grid strong {
  color: var(--muted);
  font-size: 12px;
}

.metric-grid em {
  margin-top: 18px;
  color: var(--blue);
  font-size: 27px;
  font-style: normal;
  font-weight: 800;
}

.signal-row {
  display: grid;
  grid-template-columns: 1fr 0.7fr 1.4fr 0.9fr;
  gap: 12px;
  margin: 22px 0;
}

.signal-row span {
  height: 12px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.matrix span {
  display: block;
  min-height: 104px;
  border-radius: 8px;
  background: #f1f5fb;
  border: 1px solid var(--line);
}

.matrix span:nth-child(2),
.matrix span:nth-child(5) {
  background: #eefaf6;
}

.section,
.page-hero {
  padding: 88px 6vw;
}

.page-hero {
  background: linear-gradient(180deg, #f7f9fd 0%, #fff 100%);
}

.products-hero {
  padding-bottom: 52px;
}

.contact-hero {
  padding-top: 96px;
  padding-bottom: 76px;
}

.contact-hero h1 {
  max-width: 700px;
  font-size: clamp(34px, 3.6vw, 50px);
  line-height: 1.14;
}

.contact-hero p:not(.eyebrow) {
  max-width: 780px;
  margin-top: 20px;
  font-size: 17px;
  line-height: 1.85;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 32px;
}

.section h2,
.section-head h2 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(28px, 2.7vw, 40px);
  line-height: 1.18;
  letter-spacing: 0;
  text-wrap: balance;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}

.product-overview-section {
  padding-top: 0;
  padding-bottom: 36px;
}

.compact-products {
  margin-top: -26px;
}

.product-card,
.detail-card,
.solution-grid article,
.insight-card,
.fit-grid article {
  padding: 30px;
}

.product-shot {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  margin-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f4f7fb;
}

.overview-card .product-shot {
  margin: -8px -8px 20px;
  width: calc(100% + 16px);
}

.detail-card .product-shot {
  aspect-ratio: 16 / 9;
  margin-bottom: 28px;
}

.product-heading {
  display: block;
  margin: 16px 0 12px;
}

.product-heading h2,
.product-heading h3 {
  margin: 0;
}

.detail-heading {
  margin-top: 18px;
}

.product-card h3,
.solution-grid h2,
.insight-card h3 {
  margin: 16px 0 12px;
  font-size: 25px;
  line-height: 1.25;
}

.detail-card h2 {
  max-width: 760px;
  margin: 0 0 16px;
  font-size: clamp(28px, 2.8vw, 38px);
  line-height: 1.18;
  letter-spacing: 0;
  text-wrap: balance;
}

.product-card .product-heading h3,
.detail-card .product-heading h2 {
  margin: 0;
}

.detail-card > p {
  max-width: 880px;
  font-size: 17px;
  line-height: 1.85;
}

.product-card p,
.detail-card p,
.solution-grid p,
.insight-card p,
.fit-grid p,
.delivery-list p,
.process-rail p,
.faq-list p,
.value-list p,
.contact-card p {
  color: var(--muted);
}

.product-card ul {
  padding-left: 18px;
  color: #344054;
}

.product-card a {
  color: var(--blue);
  font-weight: 800;
}

.overview-card {
  display: flex;
  flex-direction: column;
  min-height: 520px;
  box-shadow: 0 16px 42px rgba(13, 24, 44, 0.06);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.overview-card .product-shot {
  order: 5;
  width: 100%;
  margin: 22px 0 0;
  aspect-ratio: 16 / 8.8;
}

.overview-card .product-heading {
  order: 1;
}

.overview-card > p {
  order: 2;
}

.overview-card .overview-tags {
  order: 3;
}

.overview-card:hover {
  transform: translateY(-4px);
  border-color: rgba(23, 58, 106, 0.28);
  box-shadow: var(--shadow);
}

.overview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.overview-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  color: #173a6a;
  background: #eef3ff;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
}

.card-index {
  color: var(--blue);
  font-weight: 900;
}

.band {
  background: var(--soft);
}

.split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: start;
}

.value-list {
  display: grid;
  gap: 22px;
}

.value-list div {
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.value-list strong {
  font-size: 20px;
}

.cta-section {
  text-align: center;
}

.visual-cta {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.58fr);
  gap: 34px;
  align-items: center;
  text-align: left;
  background: linear-gradient(135deg, #fff 0%, #f7faff 100%);
  border-top: 1px solid var(--line);
}

.visual-cta-copy h2,
.visual-cta-copy p {
  margin-left: 0;
  margin-right: 0;
}

.visual-cta-copy p {
  max-width: 760px;
}

.visual-cta-image {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(13, 24, 44, 0.08);
}

.cta-section h2,
.cta-section p {
  margin-left: auto;
  margin-right: auto;
}

.visual-cta .visual-cta-copy h2,
.visual-cta .visual-cta-copy p {
  margin-left: 0;
  margin-right: 0;
}

.insight-grid,
.fit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}

.insight-card,
.fit-grid article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.decision-section {
  padding-top: 24px;
}

.proof-section {
  padding-top: 64px;
  background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
}

.tool-preview-section {
  background: #f8fafc;
}

.tool-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.tool-preview-grid article {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 42px rgba(13, 24, 44, 0.06);
}

.tool-preview-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.tool-preview-grid article > div {
  padding: 26px;
}

.tool-preview-grid span {
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
}

.tool-preview-grid h3 {
  margin: 10px 0 10px;
  font-size: 24px;
  line-height: 1.25;
}

.tool-preview-grid p {
  margin: 0;
  color: var(--muted);
}

.commerce-visual-section {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  gap: 34px;
  align-items: center;
  padding-top: 28px;
  padding-bottom: 28px;
}

.commerce-visual-copy h2 {
  margin-bottom: 16px;
}

.commerce-visual-copy > p:not(.eyebrow) {
  max-width: 620px;
  color: var(--muted);
}

.commerce-visual-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.commerce-visual-points span {
  padding: 8px 12px;
  color: #17336b;
  background: #eef3ff;
  border: 1px solid #dce6ff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.commerce-visual-card,
.fulfillment-context {
  position: relative;
  overflow: hidden;
  margin: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(13, 24, 44, 0.08);
}

.commerce-visual-card img,
.fulfillment-context img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.commerce-visual-card figcaption,
.fulfillment-context figcaption {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
}

.commerce-visual-card strong,
.fulfillment-context strong {
  color: var(--ink);
  font-size: 18px;
  line-height: 1.25;
}

.commerce-visual-card span,
.fulfillment-context span {
  color: var(--muted);
}

.proof-layout {
  display: grid;
  grid-template-columns: 1.15fr repeat(2, minmax(0, 0.9fr));
  gap: 22px;
}

.proof-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  padding: 30px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.proof-card span {
  width: fit-content;
  padding: 6px 10px;
  color: var(--blue);
  background: #eef3ff;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 800;
}

.proof-card h3 {
  margin: auto 0 12px;
  font-size: 26px;
  line-height: 1.2;
}

.proof-card p {
  margin: 0;
  color: var(--muted);
}

.primary-proof {
  color: #fff;
  background:
    linear-gradient(135deg, rgba(23, 58, 106, 0.9), rgba(8, 17, 31, 0.96)),
    #08111f;
  border-color: rgba(23, 58, 106, 0.36);
}

.primary-proof span {
  color: #dff7ff;
  background: rgba(255, 255, 255, 0.14);
}

.primary-proof p {
  color: #c7d3e5;
}

.process-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.process-rail article {
  min-height: 260px;
  padding: 26px 24px 0 0;
  border-right: 1px solid var(--line);
}

.process-rail article + article {
  padding-left: 24px;
}

.process-rail article:last-child {
  border-right: 0;
}

.process-rail span {
  color: var(--blue);
  font-weight: 900;
}

.process-rail h3,
.fit-grid strong,
.delivery-list strong {
  display: block;
  margin: 14px 0 10px;
  font-size: 20px;
  line-height: 1.25;
}

.faq-section {
  background: var(--soft);
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 960px;
}

.faq-list details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 22px;
}

.faq-list summary {
  color: var(--ink);
  cursor: pointer;
  font-weight: 900;
}

.faq-list p {
  margin-bottom: 0;
}

.fit-section {
  padding-top: 28px;
}

.fit-grid a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--blue);
  font-weight: 900;
}

.delivery-section {
  background: var(--soft);
}

.delivery-list {
  display: grid;
  gap: 18px;
}

.delivery-list div {
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.official-section {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: 42px;
  align-items: start;
  background: #f8fafc;
  border-top: 1px solid var(--line);
}

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

.official-grid div {
  padding: 20px 0;
  border-top: 2px solid var(--ink);
}

.official-grid strong {
  display: block;
  margin-bottom: 8px;
  font-size: 15px;
}

.official-grid p {
  margin: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.official-grid a {
  color: var(--blue);
  font-weight: 800;
}

.detail-stack {
  display: grid;
  gap: 26px;
}

.detail-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 28px 0;
}

.detail-cols div {
  padding: 18px;
  background: var(--soft);
  border-radius: 8px;
}

.fulfillment-context {
  margin: 28px 0 6px;
}

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

.solution-stack {
  display: grid;
  gap: 22px;
}

.solution-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 26px;
  padding: 30px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.solution-card h2 {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.18;
  letter-spacing: 0;
}

.solution-meta {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--blue);
  font-weight: 800;
}

.problem-label {
  margin: 0;
  color: var(--ink);
  font-weight: 900;
}

.solution-points {
  margin: 0;
  padding-left: 18px;
  color: #344054;
}

.solution-points li + li {
  margin-top: 10px;
}

.linked-product {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.linked-product strong {
  color: var(--muted);
}

.linked-product a {
  color: var(--blue);
  font-weight: 900;
}

.solution-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--dark);
  color: #fff;
}

.solution-cta h2 {
  color: #fff;
}

.solution-cta p:not(.eyebrow) {
  max-width: 760px;
  color: #c6cfdb;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 28px;
}

.contact-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  padding: 28px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: #2d3748;
  font-weight: 700;
}

.contact-form .full {
  grid-column: 1 / -1;
}

.contact-form .button[type="submit"] {
  position: relative;
  overflow: hidden;
  gap: 14px;
  min-height: 60px;
  padding: 0 34px;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
  box-shadow: 0 16px 32px rgba(23, 58, 106, 0.2);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.contact-form .button[type="submit"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, 0.24) 45%, transparent 62%);
  transform: translateX(-120%);
  transition: transform 520ms ease;
}

.contact-form .button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 38px rgba(23, 58, 106, 0.26);
}

.contact-form .button[type="submit"]:hover::before {
  transform: translateX(120%);
}

.contact-form .button[type="submit"]:active {
  transform: translateY(0);
  box-shadow: 0 10px 20px rgba(23, 58, 106, 0.2);
}

.contact-form .button[type="submit"].is-loading,
.contact-form .button[type="submit"]:disabled {
  cursor: wait;
  opacity: 0.82;
  transform: none;
}

.contact-form .button[type="submit"].is-loading::after {
  content: "";
  display: inline-grid;
  width: 22px;
  height: 22px;
  border: 2px solid rgba(23, 58, 106, 0.24);
  border-top-color: var(--blue);
  border-radius: 50%;
  background: #fff;
  animation: spin 800ms linear infinite;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 12px 13px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  background: #fff;
}

textarea {
  resize: vertical;
}

.form-status {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
}

.form-status.success {
  color: var(--green);
}

.form-status.error {
  color: #d92d20;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.contact-card {
  padding: 28px;
}

.wechat-qr {
  display: block;
  width: 180px;
  height: 180px;
  margin: 22px 0;
  padding: 10px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 36px rgba(13, 24, 44, 0.08);
}

.site-footer {
  color: #c6cfdb;
  background: #071024;
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(300px, 1.5fr) repeat(3, minmax(160px, 1fr));
  gap: 42px;
  padding: 64px 6vw 44px;
}

.footer-brand {
  max-width: 360px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  color: #fff;
  font-size: 22px;
  font-weight: 800;
}

.footer-mark {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: 0;
}

.footer-brand strong,
.footer-col strong {
  display: block;
  margin-bottom: 14px;
  color: #fff;
  font-size: 15px;
}

.footer-brand p {
  margin: 0;
  color: #9ba8ba;
  font-size: 14px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.footer-col a,
.footer-col span {
  color: #aeb8c8;
  font-size: 14px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  padding: 20px 6vw 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #8d99ac;
  font-size: 13px;
}

.footer-bottom a {
  color: #aeb8c8;
}

.footer-bottom a:hover {
  color: #fff;
}

.legal-section {
  padding-top: 36px;
}

.legal-stack {
  display: grid;
  gap: 18px;
  max-width: 920px;
}

.legal-card {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 44px rgba(13, 24, 44, 0.06);
}

.legal-card h2 {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.3;
}

.legal-card p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px 6vw;
    background: #fff;
    border-bottom: 1px solid var(--line);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a,
  .lang-toggle {
    margin: 4px 0;
  }

  .site-nav a {
    justify-content: flex-start;
  }

  .lang-toggle {
    align-self: flex-start;
  }

  .hero,
  .split,
  .commerce-visual-section,
  .visual-cta,
  .contact-layout,
  .official-section,
  .download-hero,
  .download-grid,
  .download-guidelines {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding: 56px 6vw 64px;
  }

  .hero-visual {
    min-height: auto;
    margin-left: 0;
  }

  .hero::after {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.52) 58%, rgba(255, 255, 255, 0.9) 100%);
  }

  .hero-product-matrix {
    width: 100%;
    transform: none;
    border-radius: 8px;
    mask-image: none;
    -webkit-mask-image: none;
  }

  .product-grid,
  .insight-grid,
  .fit-grid,
  .tool-preview-grid,
  .proof-layout,
  .solution-grid,
  .solution-card,
  .detail-cols,
  .official-grid {
    grid-template-columns: 1fr;
  }

  .process-rail {
    grid-template-columns: 1fr;
    border-top: 0;
    gap: 14px;
  }

  .process-rail article,
  .process-rail article + article {
    min-height: auto;
    padding: 22px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
  }

  .solution-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .compact-products {
    margin-top: 0;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .download-hero {
    align-items: start;
    padding-top: 34px;
  }
}

@media (max-width: 1120px) {
  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0 20px;
  }

  .hero,
  .section,
  .page-hero {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 34px;
    line-height: 1.12;
  }

  .contact-hero h1 {
    max-width: 100%;
    font-size: 32px;
    line-height: 1.18;
  }

  .contact-hero p:not(.eyebrow) {
    font-size: 16px;
    line-height: 1.75;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .section-head h2,
  .section-head p {
    max-width: 100%;
  }

  .contact-layout,
  .contact-form,
  .contact-card {
    min-width: 0;
  }

  .contact-form,
  .contact-card {
    padding: 22px;
  }

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

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

  .contact-form .full,
  .form-status {
    grid-column: auto;
  }

  .footer-main {
    grid-template-columns: 1fr;
    padding: 48px 20px 34px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
    padding: 18px 20px 26px;
  }

  .download-page {
    width: auto;
    padding: 32px 20px 58px;
  }

  .download-hero {
    gap: 24px;
    padding: 28px 0 30px;
  }

  .download-hero h1 {
    font-size: 34px;
    line-height: 1.12;
  }

  .download-hero p:not(.eyebrow) {
    font-size: 16px;
  }

  .download-panel,
  .download-guidelines {
    padding: 22px;
  }

  .download-panel-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .download-card {
    grid-template-columns: 44px minmax(0, 1fr);
    padding: 18px;
  }

  .platform-icon {
    width: 44px;
    height: 44px;
  }
}