:root {
  --brand: #4f46c7;
  --brand-dark: #3730a3;
  --brand-soft: #eeedff;
  --blue: #2364c8;
  --ink: #172033;
  --muted: #5f6b7d;
  --line: #dfe4ec;
  --surface: #f5f7fa;
  --white: #ffffff;
  --good: #17845b;
  --good-soft: #e7f7ef;
  --warn: #b86b08;
  --warn-soft: #fff4dd;
  --danger: #c13c48;
  --danger-soft: #fdecef;
  --shadow: 0 18px 50px rgba(29, 36, 61, 0.12);
  --radius: 8px;
  --container: 1180px;
  --header-height: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family:
    "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
body.modal-open {
  overflow: hidden;
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font: inherit;
}
button {
  letter-spacing: 0;
}
.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}
.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
}
.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(223, 228, 236, 0.85);
  backdrop-filter: blur(12px);
}
.site-header.is-scrolled {
  box-shadow: 0 8px 26px rgba(29, 36, 61, 0.08);
}
.nav-shell {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: 0 0 auto;
  font-weight: 800;
  color: #25205d;
}
.brand img{max-width:50px;height:50px;}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 7px;
  background: var(--brand);
  display: grid;
  place-items: center;
  color: #fff;
}
.brand-mark svg {
  width: 22px;
  height: 22px;
  stroke-width: 2;
}
.brand-text {
  font-size: 18px;
  line-height: 1.1;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
}
.main-nav a {
  position: relative;
  color: #3d485c;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--brand);
}
.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -23px;
  height: 2px;
  background: var(--brand);
}
.nav-cta {
  min-height: 42px;
  padding: 9px 18px !important;
  color: #fff !important;
  background: var(--brand);
  border-radius: 6px;
  border: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}
.nav-cta:hover {
  background: var(--brand-dark);
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}
.menu-toggle svg {
  width: 20px;
  height: 20px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 750;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    background 0.18s ease;
}
.btn svg {
  width: 18px;
  height: 18px;
}
.btn:hover {
  transform: translateY(-2px);
}
.btn-primary {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 10px 24px rgba(79, 70, 199, 0.24);
}
.btn-primary:hover {
  background: var(--brand-dark);
}
.btn-secondary {
  color: var(--ink);
  background: #fff;
  border-color: var(--line);
}
.btn-secondary:hover {
  border-color: #aeb8c8;
  box-shadow: 0 8px 22px rgba(23, 32, 51, 0.08);
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--brand-dark);
  font-weight: 750;
}
.text-link svg {
  width: 17px;
}

.hero {
  min-height: calc(100vh - var(--header-height) - 42px);
  display: flex;
  align-items: center;
  padding: 44px 0 22px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(520px, .8fr);
  align-items: center;
  gap: 58px;
}
.hero h1 {
  max-width: 690px;
  margin: 0 0 22px;
  color: #181536;
  font-size: clamp(42px, 5.2vw, 72px);
  line-height: 1.06;
  font-weight: 850;
}
.hero h1 span {
  display: block;
  margin-top: 15px;
  color: var(--brand);
  font-size: 0.48em;
  line-height: 1.25;
}
.hero-copy > p {
  max-width: 640px;
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}
.trust-line {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  color: #4c596d;
  font-size: 14px;
}
.trust-line li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.trust-line svg {
  width: 16px;
  color: var(--good);
}
.app-stage {
  position: relative;
  padding: 20px 0 28px;
}
.app-frame {
  position: relative;
  overflow: hidden;
  background: #141721;
  border: 1px solid #cbd1dc;
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.app-frame::before {
  content: "";
  display: block;
  height: 34px;
  background: #eef1f5;
  border-bottom: 1px solid #d3d8e2;
}
.window-dots {
  position: absolute;
  z-index: 2;
  top: 12px;
  left: 14px;
  display: flex;
  gap: 6px;
}
.window-dots i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #aeb6c4;
}
.app-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 1.397 / 1;
  object-fit: cover;
  object-position: top center;
}
.status-float {
  position: absolute;
  right: -20px;
  bottom: 0;
  min-width: 212px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border-left: 4px solid var(--good);
  box-shadow: 0 14px 34px rgba(23, 32, 51, 0.16);
  border-radius: 6px;
}
.status-float svg {
  width: 24px;
  color: var(--good);
}
.status-float strong,
.status-float span {
  display: block;
  line-height: 1.3;
}
.status-float span {
  color: var(--muted);
  font-size: 12px;
}

.section {
  padding: 96px 0;
}
.section-soft {
  background: var(--surface);
}
.section-dark {
  color: #fff;
  background: #1c2333;
}
.section-head {
  max-width: 720px;
  margin-bottom: 48px;
}
.section-head.center {
  margin-inline: auto;
  text-align: center;
}
.section-head h2 {
  margin: 0 0 14px;
  font-size: 36px;
  line-height: 1.25;
  color: #1e2638;
}
.section-dark .section-head h2 {
  color: #fff;
}
.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}
.section-dark .section-head p {
  color: #bec7d8;
}
.section-dark .section-label {
  color: #a9c8ff;
}
.section-label {
  margin: 0 0 12px;
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.support-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.support-inner {
  min-height: 88px;
  display: grid;
  grid-template-columns: 1.3fr repeat(4, 1fr);
  align-items: center;
  gap: 20px;
}
.support-title {
  font-weight: 750;
}
.support-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #4d596d;
  font-size: 14px;
}
.support-item svg {
  width: 20px;
  color: var(--blue);
}

.scene-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}
.scene-item {
  min-height: 250px;
  padding: 34px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.scene-item:nth-child(3n) {
  border-right: 0;
}
.scene-index {
  color: var(--brand);
  font-size: 13px;
  font-weight: 800;
}
.scene-item svg {
  width: 30px;
  height: 30px;
  margin: 22px 0 18px;
  color: var(--brand);
}
.scene-item h3 {
  margin: 0 0 8px;
  font-size: 20px;
}
.scene-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.feature-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.86fr);
  align-items: center;
  gap: 74px;
}
.feature-media {
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.feature-media img {
  width: 100%;
}
.check-list {
  display: grid;
  gap: 20px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}
.check-list li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
}
.check-list svg {
  width: 22px;
  color: var(--good);
  margin-top: 2px;
}
.check-list strong {
  display: block;
  margin-bottom: 3px;
}
.check-list span {
  color: var(--muted);
  font-size: 15px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.step {
  padding-top: 24px;
  border-top: 3px solid var(--brand);
}
.step-number {
  color: var(--brand);
  font-size: 14px;
  font-weight: 850;
}
.step h3 {
  margin: 14px 0 8px;
  font-size: 22px;
}
.step p {
  margin: 0;
  color: var(--muted);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.review {
  margin: 0;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.review p {
  margin: 0 0 22px;
  color: #344054;
}
.review footer {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}
.avatar {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand);
  border-radius: 50%;
  font-weight: 800;
}
.review:nth-child(2) .avatar {
  background: var(--good);
}
.review:nth-child(3) .avatar {
  background: var(--warn);
}
.reviews-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 13px;
}

.cta-band {
  padding: 68px 0;
  color: #fff;
  background: var(--brand);
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-inner h2 {
  max-width: 650px;
  margin: 0 0 8px;
  font-size: 34px;
  line-height: 1.3;
}
.cta-inner p {
  margin: 0;
  color: #dedcff;
}
.cta-band .btn {
  color: var(--brand-dark);
  background: #fff;
  box-shadow: none;
}

.page-hero {
  padding: 76px 0 66px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.65fr);
  align-items: end;
  gap: 70px;
}
.breadcrumbs {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 13px;
}
.breadcrumbs a {
  color: var(--brand);
}
.page-hero h1 {
  margin: 0 0 18px;
  font-size: 46px;
  line-height: 1.2;
}
.page-hero p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}
.page-aside {
  padding-left: 24px;
  border-left: 3px solid var(--brand);
  color: #424e62;
}
.page-aside strong {
  display: block;
  color: var(--ink);
  font-size: 22px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.metric {
  padding: 24px;
  background: #fff;
}
.metric strong {
  display: block;
  margin-bottom: 4px;
  font-size: 20px;
}
.metric span {
  color: var(--muted);
  font-size: 14px;
}
.capability-list {
  border-top: 1px solid var(--line);
}
.capability-row {
  display: grid;
  grid-template-columns: 68px minmax(220px, 0.7fr) 1.3fr;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}
.capability-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 6px;
}
.capability-icon svg {
  width: 24px;
}
.capability-row h3 {
  margin: 6px 0 0;
  font-size: 20px;
}
.capability-row p {
  margin: 3px 0 0;
  color: var(--muted);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.status-panel {
  padding: 26px;
  border: 1px solid var(--line);
  border-top-width: 5px;
  border-radius: var(--radius);
}
.status-panel.good {
  border-top-color: var(--good);
  background: var(--good-soft);
}
.status-panel.warn {
  border-top-color: var(--warn);
  background: var(--warn-soft);
}
.status-panel.danger {
  border-top-color: var(--danger);
  background: var(--danger-soft);
}
.status-panel h3 {
  margin: 0 0 9px;
}
.status-panel p {
  margin: 0;
  color: #495568;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
.data-table th,
.data-table td {
  padding: 16px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.data-table th {
  color: #445065;
  background: var(--surface);
  font-size: 14px;
}
.data-table tr:last-child td {
  border-bottom: 0;
}

.guide-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 70px;
  align-items: start;
}
.toc {
  position: sticky;
  top: 98px;
  padding: 22px;
  background: var(--surface);
  border-left: 3px solid var(--brand);
}
.toc strong {
  display: block;
  margin-bottom: 10px;
}
.toc a {
  display: block;
  padding: 6px 0;
  color: var(--muted);
  font-size: 14px;
}
.toc a:hover {
  color: var(--brand);
}
.article-section {
  padding-bottom: 56px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--line);
}
.article-section:last-child {
  border-bottom: 0;
}
.article-section h2 {
  margin: 0 0 16px;
  font-size: 30px;
}
.article-section h3 {
  margin: 30px 0 8px;
}
.article-section p {
  color: #4f5c70;
}
.numbered {
  counter-reset: guide;
  display: grid;
  gap: 22px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.numbered li {
  counter-increment: guide;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
}
.numbered li::before {
  content: counter(guide);
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--brand);
  border-radius: 50%;
  font-weight: 800;
}
.callout {
  margin: 24px 0;
  padding: 20px 22px;
  background: var(--warn-soft);
  border-left: 4px solid var(--warn);
}
.callout strong {
  display: block;
}

.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 42px;
  align-items: start;
}
.release-panel {
  padding: 34px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--brand);
}
.release-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}
.release-top h2 {
  margin: 0;
  font-size: 30px;
}
.release-badge {
  width: 34px;
  height: 34px;
  color: var(--good);
}
.version {
  color: var(--brand);
  font-weight: 850;
}
.release-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin: 20px 0 28px;
  color: var(--muted);
  font-size: 14px;
}
.download-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.download-actions {
  margin-top: 28px;
}
.download-option {
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--line);
}
.download-option h3 {
  margin: 0 0 5px;
  font-size: 18px;
}
.download-option p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.source-panel {
  padding: 26px;
  color: #fff;
  background: #1c2333;
}
.source-icon {
  width: 30px;
  height: 30px;
}
.source-panel h3 {
  margin: 0 0 8px;
}
.source-panel p {
  color: #c4ccda;
  font-size: 14px;
}
.source-panel a {
  color: #a9c8ff;
}
.requirement-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.requirement-list li {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.requirement-list strong {
  color: #344054;
}
.requirement-list span {
  color: var(--muted);
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item summary {
  position: relative;
  padding: 24px 52px 24px 0;
  cursor: pointer;
  font-size: 18px;
  font-weight: 750;
  list-style: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 19px;
  color: var(--brand);
  font-size: 26px;
  font-weight: 400;
}
.faq-item[open] summary::after {
  content: "-";
}
.faq-answer {
  max-width: 780px;
  padding: 0 0 24px;
  color: var(--muted);
}
.faq-answer p {
  margin: 0 0 10px;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: 70px;
}
.about-grid h2 {
  margin-top: 0;
  font-size: 32px;
}
.about-grid p {
  color: var(--muted);
}
.fact-box {
  padding: 28px;
  background: var(--surface);
  border-top: 4px solid var(--brand);
}
.fact-box dl {
  margin: 0;
}
.fact-box div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.fact-box div:last-child {
  border-bottom: 0;
}
.fact-box dt {
  color: var(--muted);
}
.fact-box dd {
  margin: 0;
  font-weight: 700;
}
.source-list {
  margin: 24px 0 0;
  padding-left: 20px;
}
.source-list a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer {
  padding: 62px 0 28px;
  color: #c5ccda;
  background: #141a27;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 50px;
}
.footer-brand .brand {
  color: #fff;
}
.footer-brand p {
  max-width: 380px;
  margin: 18px 0 0;
  color: #9fa9ba;
  font-size: 14px;
}
.footer-col strong {
  display: block;
  margin-bottom: 14px;
  color: #fff;
}
.footer-col a {
  display: block;
  padding: 4px 0;
  color: #aeb7c6;
  font-size: 14px;
}
.footer-col a:hover {
  color: #fff;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid #2d3545;
  color: #818c9f;
  font-size: 12px;
}

.download-modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(12, 16, 26, 0.68);
}
.download-modal.is-open {
  display: flex;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}
.modal-dialog {
  position: relative;
  width: min(760px, 100%);
  max-height: calc(100vh - 40px);
  overflow: auto;
  padding: 34px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.26);
}
.modal-close {
  position: absolute;
  right: 18px;
  top: 18px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  color: var(--ink);
  background: var(--surface);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}
.modal-close svg {
  width: 20px;
}
.modal-dialog h2 {
  margin: 0 46px 8px 0;
  font-size: 28px;
}
.modal-lead {
  margin: 0 0 22px;
  color: var(--muted);
}
.qr-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.qr-item {
  padding: 20px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
}
.qr-item img {
  width: 176px;
  height: 176px;
  margin: 0 auto 12px;
  padding: 8px;
  background: #fff;
}
.qr-item strong {
  display: block;
}
.qr-item span {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 13px;
}
.qr-item a {
  color: var(--brand);
  font-size: 14px;
  font-weight: 750;
}
.modal-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  color: #5a4b2d;
  background: var(--warn-soft);
  font-size: 13px;
}

@media (max-width: 1020px) {
  .main-nav {
    gap: 16px;
  }
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .hero h1 {
    font-size: 48px;
  }
  .status-float {
    right: 12px;
  }
  .support-inner {
    grid-template-columns: 1fr repeat(2, 1fr);
    padding: 16px 0;
  }
  .support-title {
    grid-row: span 2;
  }
  .feature-split {
    gap: 42px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
  }
  .menu-toggle {
    display: grid;
  }
  .main-nav {
    position: fixed;
    left: 20px;
    right: 20px;
    top: 70px;
    display: none;
    padding: 18px;
    background: #fff;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
  }
  .main-nav.is-open {
    display: grid;
  }
  .main-nav a {
    padding: 8px 4px;
  }
  .main-nav a[aria-current="page"]::after {
    display: none;
  }
  .nav-cta {
    width: 100%;
  }
  .hero {
    min-height: auto;
    padding-top: 46px;
  }
  .hero-grid,
  .page-hero-grid,
  .feature-split,
  .about-grid,
  .download-layout {
    grid-template-columns: 1fr;
  }
  .hero-copy {
    max-width: 680px;
  }
  .hero h1 {
    font-size: 48px;
  }
  .app-stage {
    max-width: 660px;
  }
  .scene-list {
    grid-template-columns: 1fr 1fr;
  }
  .scene-item:nth-child(3n) {
    border-right: 1px solid var(--line);
  }
  .scene-item:nth-child(2n) {
    border-right: 0;
  }
  .steps,
  .review-grid,
  .status-grid {
    grid-template-columns: 1fr;
  }
  .guide-layout {
    grid-template-columns: 1fr;
    gap: 34px;
  }
  .toc {
    position: static;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }
  .brand-text {
    font-size: 16px;
  }
  .hero {
    padding: 38px 0 36px;
  }
  .hero-grid {
    gap: 24px;
  }
  .hero h1 {
    font-size: 38px;
  }
  .hero h1 span {
    font-size: 0.5em;
  }
  .hero-copy > p {
    font-size: 16px;
  }
  .btn-row .btn {
    width: 100%;
  }
  .app-stage {
    height: 214px;
    padding-top: 0;
    overflow: hidden;
  }
  .app-frame img {
    height: 180px;
    object-fit: cover;
    object-position: top center;
  }
  .status-float {
    display: none;
  }
  .support-inner {
    grid-template-columns: 1fr 1fr;
  }
  .support-title {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .section {
    padding: 68px 0;
  }
  .section-head {
    margin-bottom: 34px;
  }
  .section-head h2 {
    font-size: 29px;
  }
  .scene-list {
    grid-template-columns: 1fr;
  }
  .scene-item,
  .scene-item:nth-child(3n) {
    min-height: 0;
    border-right: 0;
  }
  .page-hero {
    padding: 48px 0;
  }
  .page-hero h1 {
    font-size: 36px;
  }
  .page-aside {
    display: none;
  }
  .metric-row {
    grid-template-columns: 1fr 1fr;
  }
  .capability-row {
    grid-template-columns: 50px 1fr;
    gap: 16px;
  }
  .capability-row p {
    grid-column: 2;
  }
  .download-options,
  .qr-grid {
    grid-template-columns: 1fr;
  }
  .requirement-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .release-top,
  .cta-inner,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .modal-dialog {
    padding: 26px 18px;
  }
  .modal-close {
    right: 10px;
    top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}