:root {
  --bg: #f5f8ff;
  --bg-strong: #eef4ff;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --line: rgba(66, 133, 244, 0.14);
  --line-strong: rgba(66, 133, 244, 0.22);
  --text: #17233c;
  --muted: #5d6b87;
  --muted-2: #42516e;
  --blue: #1a73e8;
  --blue-deep: #1458b8;
  --blue-soft: rgba(26, 115, 232, 0.1);
  --green: #0f9d58;
  --green-soft: rgba(15, 157, 88, 0.12);
  --yellow: #fbbc04;
  --yellow-soft: rgba(251, 188, 4, 0.14);
  --red: #ea4335;
  --red-soft: rgba(234, 67, 53, 0.12);
  --shadow: 0 24px 70px rgba(32, 74, 144, 0.12);
  --shadow-soft: 0 18px 36px rgba(32, 74, 144, 0.08);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(66, 133, 244, 0.16), transparent 26%),
    radial-gradient(circle at top right, rgba(52, 168, 83, 0.12), transparent 20%),
    linear-gradient(180deg, #f9fbff 0%, #f3f7ff 46%, #eef3ff 100%);
}

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

button {
  font: inherit;
}

svg {
  display: block;
}

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

main {
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: 16px 0;
  background: rgba(245, 248, 255, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(66, 133, 244, 0.08);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand svg {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-link {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(66, 133, 244, 0.14);
}

.nav-link.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.94);
  border-color: rgba(66, 133, 244, 0.18);
  box-shadow: var(--shadow-soft);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 22px;
  border-radius: 18px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.btn svg {
  width: 20px;
  height: 20px;
  flex: 0 0 20px;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
  box-shadow: 0 16px 30px rgba(26, 115, 232, 0.28);
}

.btn-primary:hover {
  box-shadow: 0 18px 34px rgba(26, 115, 232, 0.32);
}

.btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(66, 133, 244, 0.16);
}

.btn-secondary:hover {
  border-color: rgba(66, 133, 244, 0.24);
  box-shadow: var(--shadow-soft);
}

.btn-outline {
  color: var(--blue);
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(26, 115, 232, 0.18);
}

.btn-outline:hover {
  border-color: rgba(26, 115, 232, 0.28);
  box-shadow: var(--shadow-soft);
}

.btn-soft {
  color: var(--text);
  background: rgba(66, 133, 244, 0.08);
  border-color: rgba(66, 133, 244, 0.12);
}

.btn-soft:hover {
  background: rgba(66, 133, 244, 0.12);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.84;
  cursor: wait;
  transform: none;
}

.surface {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.section {
  padding: 44px 0;
}

.section-intro {
  max-width: 760px;
  margin-bottom: 24px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(66, 133, 244, 0.14);
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 700;
}

.section-intro h2 {
  margin: 14px 0 12px;
  font-size: clamp(1.95rem, 3vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-intro p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.75;
}

.hero-main {
  position: relative;
  padding: 70px 0 38px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(66, 133, 244, 0.18);
  color: var(--blue);
  font-weight: 800;
  margin-bottom: 20px;
}

.hero-content-wrap {
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 36px;
  align-items: center;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.5rem, 4.4vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero-copy p {
  margin: 22px 0 0;
  max-width: 640px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.82;
}

.hero-actions,
.button-row,
.quick-links,
.anchor-band,
.keyword-cloud,
.pill-list,
.platform-badges,
.inline-note-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 30px;
}

.note-pill,
.badge-chip,
.pill,
.quick-link,
.keyword-chip,
.anchor-band a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(66, 133, 244, 0.14);
  background: rgba(255, 255, 255, 0.84);
  color: var(--muted-2);
  font-size: 0.92rem;
  font-weight: 600;
}

.note-pill svg,
.badge-chip svg,
.quick-link svg {
  width: 18px;
  height: 18px;
  color: var(--blue);
}

.keyword-chip {
  color: var(--blue);
  background: rgba(66, 133, 244, 0.1);
  border-color: rgba(66, 133, 244, 0.16);
}

.hero-orbit {
  position: relative;
  min-height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(66, 133, 244, 0.18);
}

.ring-one {
  width: 420px;
  height: 420px;
}

.ring-two {
  width: 312px;
  height: 312px;
  border-style: solid;
  opacity: 0.38;
}

.orbit-center {
  position: relative;
  z-index: 2;
  width: 246px;
  height: 246px;
  border-radius: 50%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(238, 244, 255, 0.92) 100%);
  border: 1px solid rgba(66, 133, 244, 0.18);
  box-shadow: 0 28px 60px rgba(41, 88, 169, 0.18);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 28px;
  text-align: center;
}

.orbit-center svg {
  width: 84px;
  height: 84px;
}

.orbit-center strong {
  font-size: 1.28rem;
  letter-spacing: -0.04em;
}

.orbit-center span {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.orbit-card {
  position: absolute;
  width: 204px;
  padding: 18px 18px 16px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(66, 133, 244, 0.15);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  animation: float 7s ease-in-out infinite;
}

.orbit-card svg {
  width: 22px;
  height: 22px;
  margin-bottom: 12px;
  color: var(--blue);
}

.orbit-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1rem;
}

.orbit-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.orbit-card-a {
  top: 42px;
  left: 0;
}

.orbit-card-b {
  top: 19%;
  right: 0;
  animation-delay: -1.8s;
}

.orbit-card-c {
  bottom: 54px;
  left: 34px;
  animation-delay: -3.6s;
}

.orbit-card-d {
  right: 18px;
  bottom: 36px;
  animation-delay: -5.4s;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.metric-card {
  padding: 22px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(66, 133, 244, 0.14);
  box-shadow: var(--shadow-soft);
}

.metric-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.metric-top strong {
  font-size: 1.4rem;
  letter-spacing: -0.04em;
}

.metric-top svg {
  width: 24px;
  height: 24px;
  color: var(--blue);
}

.metric-card span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.6;
}

.journey-grid,
.review-wall,
.security-grid,
.tips-grid {
  display: grid;
  gap: 18px;
}

.journey-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.journey-card,
.platform-primary,
.platform-card,
.review-card,
.faq-item,
.cta-band,
.main-installer,
.side-card,
.step-card,
.security-card,
.article-card,
.tip-card,
.cta-banner {
  padding: 28px;
}

.icon-badge {
  width: 50px;
  height: 50px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(66, 133, 244, 0.1);
  color: var(--blue);
  margin-bottom: 18px;
}

.icon-badge svg,
.security-card svg,
.tip-card svg {
  width: 24px;
  height: 24px;
}

.journey-card h3,
.platform-card h3,
.side-card h3,
.security-card h3,
.tip-card h3 {
  margin: 0;
  font-size: 1.22rem;
  letter-spacing: -0.03em;
}

.journey-card p,
.platform-card p,
.side-card p,
.security-card p,
.tip-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.72;
}

.check-list,
.feature-points,
.platform-card ul {
  list-style: none;
  padding: 0;
  margin: 18px 0 0;
  display: grid;
  gap: 12px;
}

.check-list li,
.feature-points li,
.platform-card li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted-2);
  line-height: 1.62;
}

.check-list svg,
.feature-points svg,
.platform-card li svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  margin-top: 2px;
  color: var(--green);
}

.platform-board,
.focus-grid {
  display: grid;
  gap: 20px;
}

.platform-board {
  grid-template-columns: 1.15fr 0.85fr;
}

.platform-primary {
  position: relative;
  overflow: hidden;
}

.platform-primary::after {
  content: "";
  position: absolute;
  right: -100px;
  bottom: -100px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(66, 133, 244, 0.18) 0%, rgba(66, 133, 244, 0) 72%);
}

.platform-primary h3,
.main-installer h2,
.cta-band h2,
.cta-banner h2,
.article-hero h1,
.download-hero-panel h1 {
  margin: 0;
  letter-spacing: -0.045em;
}

.platform-primary h3,
.main-installer h2,
.cta-band h2,
.cta-banner h2 {
  font-size: clamp(1.8rem, 2.7vw, 2.7rem);
}

.platform-primary p,
.main-installer > p,
.cta-band p,
.cta-banner p,
.article-hero p,
.download-hero-panel p {
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.platform-grid,
.side-stack,
.article-stack,
.update-list {
  display: grid;
  gap: 16px;
}

.platform-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.platform-card-header svg {
  width: 40px;
  height: 40px;
  color: var(--blue);
  flex: 0 0 40px;
}

.review-wall {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.review-stars {
  display: flex;
  gap: 6px;
  color: #f59e0b;
  margin-bottom: 16px;
}

.review-stars svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  stroke: currentColor;
}

.review-card blockquote {
  margin: 0;
  color: var(--muted-2);
  line-height: 1.85;
}

.review-person {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 18px;
}

.avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
}

.review-person strong {
  display: block;
  margin-bottom: 4px;
}

.review-person span {
  color: var(--muted);
  font-size: 0.92rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.faq-item {
  overflow: hidden;
}

.faq-item details {
  height: 100%;
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 24px;
  cursor: pointer;
  font-weight: 800;
  line-height: 1.55;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  color: var(--blue);
  transition: transform 0.2s ease;
}

.faq-item p {
  margin: 0;
  padding: 0 24px 24px;
  color: var(--muted);
  line-height: 1.82;
}

.faq-item details[open] {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(245, 249, 255, 0.92) 100%);
}

.faq-item details[open] .faq-icon {
  transform: rotate(180deg);
}

.cta-band,
.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.cta-band p,
.cta-banner p {
  max-width: 640px;
}

.site-footer {
  padding: 28px 0 44px;
}

.footer-shell {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand-row {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.footer-brand-row svg {
  width: 30px;
  height: 30px;
}

.footer-note {
  margin: 14px 0 0;
  max-width: 760px;
  color: var(--muted);
  line-height: 1.82;
}

.footer-meta {
  display: grid;
  gap: 10px;
  color: var(--muted-2);
  line-height: 1.8;
}

.footer-meta strong {
  color: var(--text);
}

.download-hero-panel,
.article-hero {
  padding: 48px 0 24px;
}

.download-hero-panel h1,
.article-hero h1 {
  font-size: clamp(2.35rem, 4vw, 4.1rem);
  line-height: 1.02;
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.focus-grid {
  grid-template-columns: 1.08fr 0.92fr;
  margin-top: 24px;
}

.main-installer {
  position: relative;
  overflow: hidden;
}

.main-installer::after {
  content: "";
  position: absolute;
  inset: auto -90px -100px auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 115, 232, 0.14) 0%, rgba(26, 115, 232, 0) 72%);
}

.hero-logo {
  width: 74px;
  height: 74px;
  margin-bottom: 18px;
}

.installer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0;
}

.small-stat {
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(66, 133, 244, 0.13);
}

.small-stat strong {
  display: block;
  font-size: 1rem;
}

.small-stat span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

.side-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.82;
}

.platform-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.table-shell {
  overflow: auto;
}

.spec-table,
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

.spec-table th,
.spec-table td,
.comparison-table th,
.comparison-table td {
  padding: 17px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(66, 133, 244, 0.12);
}

.spec-table th,
.comparison-table th {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 800;
}

.spec-table td,
.comparison-table td {
  color: var(--muted-2);
  line-height: 1.72;
}

.spec-table tr:last-child td,
.comparison-table tr:last-child td {
  border-bottom: none;
}

.spec-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(26, 115, 232, 0.1);
  color: var(--blue);
  font-weight: 800;
  font-size: 0.86rem;
}

.step-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.step-no {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
  color: #ffffff;
  font-weight: 800;
  margin-bottom: 16px;
}

.step-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.step-card p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.75;
}

.security-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.article-card h2 {
  margin: 0 0 16px;
  font-size: clamp(1.72rem, 2.5vw, 2.3rem);
  letter-spacing: -0.045em;
}

.article-card h3 {
  margin: 20px 0 10px;
  font-size: 1.16rem;
  letter-spacing: -0.03em;
}

.article-card p {
  margin: 0 0 14px;
  color: var(--muted-2);
  line-height: 1.9;
}

.article-card ul {
  margin: 0;
  padding-left: 20px;
  color: var(--muted-2);
  line-height: 1.86;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.highlight-card {
  padding: 20px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94) 0%, rgba(245, 249, 255, 0.88) 100%);
  border: 1px solid rgba(66, 133, 244, 0.14);
}

.highlight-card svg {
  width: 24px;
  height: 24px;
  color: var(--blue);
  margin-bottom: 12px;
}

.highlight-card h3 {
  margin: 0;
}

.highlight-card p {
  margin: 10px 0 0;
}

.status-good {
  color: var(--green);
  font-weight: 800;
}

.status-mid {
  color: #d97706;
  font-weight: 800;
}

.update-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(247, 250, 255, 0.9) 100%);
  border: 1px solid rgba(66, 133, 244, 0.12);
}

.update-item strong {
  display: block;
  margin-bottom: 6px;
}

.update-item span {
  color: var(--muted);
  font-size: 0.92rem;
  white-space: nowrap;
}

.tip-card p {
  margin-top: 10px;
}

.section-anchor {
  scroll-margin-top: 104px;
}

.tone-blue {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(238, 244, 255, 0.9) 100%);
}

.tone-mint {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(240, 252, 247, 0.9) 100%);
}

.tone-gold {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 249, 228, 0.92) 100%);
}

.tone-red {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 244, 243, 0.92) 100%);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1080px) {
  .hero-content-wrap,
  .platform-board,
  .focus-grid {
    grid-template-columns: 1fr;
  }

  .metric-strip,
  .journey-grid,
  .review-wall,
  .security-grid,
  .tips-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .step-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-orbit {
    max-width: 640px;
    margin: 0 auto;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding: 12px 0;
  }

  .nav-shell,
  .footer-shell,
  .cta-band,
  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-main,
  .download-hero-panel,
  .article-hero {
    padding-top: 38px;
  }

  .hero-copy h1,
  .download-hero-panel h1,
  .article-hero h1 {
    font-size: clamp(2rem, 9vw, 3rem);
  }

  .metric-strip,
  .journey-grid,
  .review-wall,
  .faq-grid,
  .security-grid,
  .tips-grid,
  .platform-rail,
  .highlight-grid,
  .step-grid,
  .installer-grid {
    grid-template-columns: 1fr;
  }

  .hero-orbit {
    min-height: auto;
    display: grid;
    gap: 12px;
  }

  .orbit-ring {
    display: none;
  }

  .orbit-center {
    width: min(100%, 340px);
    height: auto;
    border-radius: 28px;
    padding: 28px;
    margin: 0 auto;
  }

  .orbit-card {
    position: static;
    width: 100%;
    animation: none;
  }

  .journey-card,
  .platform-primary,
  .platform-card,
  .review-card,
  .faq-item,
  .cta-band,
  .main-installer,
  .side-card,
  .step-card,
  .security-card,
  .article-card,
  .tip-card,
  .cta-banner {
    padding: 22px;
  }

  .platform-primary h3,
  .main-installer h2,
  .cta-band h2,
  .cta-banner h2,
  .article-card h2 {
    font-size: 1.8rem;
  }

  .update-item {
    flex-direction: column;
  }

  .update-item span {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}