:root {
  --bg: #080a0d;
  --bg-soft: #11161c;
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.085);
  --line: rgba(230, 235, 241, 0.14);
  --text: #f6f8fa;
  --muted: #adb6c1;
  --accent: #d72f26;
  --accent-deep: #8f1712;
  --steel: #9fb1c4;
  --silver: #d8dee6;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
  --radius-lg: 8px;
  --radius-md: 8px;
  --radius-sm: 8px;
  --shell: min(1200px, calc(100% - 32px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(120deg, rgba(215, 47, 38, 0.16), transparent 28%),
    linear-gradient(180deg, #10151b 0%, #07090c 54%, #0b0d10 100%);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(239, 79, 69, 0.82);
  outline-offset: 3px;
}

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

button,
input,
textarea {
  font: inherit;
}

.site-noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 34px 34px;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(7, 9, 11, 0.84);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header-inner,
.site-footer-inner,
.hero-layout,
.split-layout,
.product-detail-layout,
.contact-page-layout {
  display: grid;
  gap: 24px;
}

.site-header-inner {
  grid-template-columns: auto auto 1fr;
  align-items: center;
  padding: 14px 0;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-deep) 100%);
}

.brand-text {
  display: grid;
  gap: 3px;
}

.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0;
}

.brand-text small {
  color: var(--muted);
}

.site-nav {
  justify-self: end;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.site-nav a {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--muted);
}

.site-nav a.is-current,
.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.footer-links a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.hero-block,
.page-hero {
  padding: 64px 0 28px;
}

.hero-layout,
.split-layout,
.product-detail-layout,
.contact-page-layout {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
}

.hero-layout > *,
.split-layout > *,
.product-detail-layout > *,
.contact-page-layout > *,
.cta-banner > *,
.site-footer-inner > * {
  min-width: 0;
}

.hero-block .hero-layout {
  min-height: min(620px, calc(100vh - 120px));
}

.hero-copy,
.hero-image-card,
.hero-overlay-card,
.glass-card,
.showcase-panel,
.cta-banner,
.contact-panel,
.contact-form-panel,
.scenario-panel,
.timeline-item {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.section-kicker {
  margin: 0 0 14px;
  color: var(--steel);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1,
h2 {
  letter-spacing: 0;
  line-height: 1.06;
}

h1 {
  font-size: clamp(2.65rem, 7vw, 5.2rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.4rem);
}

h3 {
  font-size: 1.2rem;
}

.hero-lead,
.section-head p,
.glass-card p,
.showcase-panel p,
.bullet-list,
.scenario-panel p,
.timeline-item p,
.contact-info-list span,
.contact-info-list strong,
.footer-links,
.site-footer p,
.feature-list p,
.hero-overlay-card li,
.hero-data span,
.lead-text {
  color: var(--muted);
  line-height: 1.78;
}

.hero-lead {
  max-width: 620px;
  font-size: clamp(1.05rem, 1.8vw, 1.22rem);
}

.hero-tags,
.hero-actions,
.hero-data,
.cards-grid,
.feature-list,
.info-strips,
.contact-info-list,
.timeline-grid,
.footer-links,
.cta-banner-actions,
.instruction-grid {
  display: grid;
  gap: 14px;
}

.hero-tags {
  grid-template-columns: repeat(2, minmax(0, max-content));
  margin: 28px 0;
}

.hero-tags span,
.info-strips span {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
}

.hero-actions,
.cta-banner-actions {
  grid-template-columns: repeat(2, minmax(0, max-content));
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.button:hover,
.thumb:hover,
.floating-cta:hover,
.nav-toggle:hover {
  transform: translateY(-2px);
}

.glass-card,
.series-card,
.scenario-panel,
.timeline-item,
.contact-panel,
.contact-form-panel,
.cta-banner,
.spec-text-panel {
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.glass-card:hover,
.series-card:hover,
.scenario-panel:hover,
.timeline-item:hover {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.075);
  transform: translateY(-2px);
}

.button-primary,
.floating-cta {
  color: var(--text);
  background: linear-gradient(180deg, #ef4f45 0%, #b32018 100%);
  box-shadow: 0 16px 36px rgba(215, 47, 38, 0.22);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.045);
}

.button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.3);
}

.hero-data {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 24px;
}

.hero-data article,
.feature-list article {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
}

.hero-visual {
  position: relative;
  min-height: 100%;
}

.hero-image-card {
  padding: clamp(18px, 3vw, 30px);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent 32%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(0, 0, 0, 0.14)),
    #13171b;
}

.hero-image-card img {
  aspect-ratio: 1;
  object-fit: contain;
  filter: drop-shadow(0 24px 40px rgba(0, 0, 0, 0.35));
}

.hero-overlay-card {
  position: absolute;
  right: 16px;
  bottom: 16px;
  width: min(290px, 92%);
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(8, 9, 11, 0.86);
}

.hero-overlay-card ul,
.bullet-list {
  margin: 0;
  padding-left: 18px;
}

.section-block {
  padding: 32px 0;
}

.mobile-compact-section {
  min-width: 0;
}

.mobile-card-strip {
  min-width: 0;
}

.mobile-h5-page {
  display: none;
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-head-compact h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.cards-grid-four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.cards-grid-three,
.timeline-grid,
.instruction-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.series-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.series-grid-full {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.glass-card,
.scene-card,
.timeline-item,
.scenario-panel,
.contact-panel,
.contact-form-panel {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.series-card,
.spec-text-panel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.series-card {
  display: grid;
  gap: 16px;
}

.series-card img,
.series-grid .glass-card img {
  border-radius: var(--radius-sm);
  background: #eef1f4;
}

.series-grid .glass-card {
  display: grid;
  gap: 14px;
}

.series-grid .glass-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.scene-card span,
.scenario-index,
.timeline-item span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: var(--radius-sm);
  background: rgba(215, 47, 38, 0.18);
  color: #fff;
  font-weight: 700;
}

.section-dark .showcase-panel,
.showcase-panel {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.showcase-panel img {
  aspect-ratio: 1;
  object-fit: cover;
}

.showcase-metrics {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(8, 9, 11, 0.88);
}

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

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

.section-dark .glass-card,
.section-dark .showcase-panel,
.section-dark .scenario-panel,
.section-dark .timeline-item,
.section-dark .contact-panel,
.section-dark .contact-form-panel {
  background: var(--panel-strong);
}

.section-dark,
.section-accent {
  position: relative;
}

.section-dark::before,
.section-accent::before {
  content: "";
  position: absolute;
  inset: 16px 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.08)),
    #0f1317;
}

.section-accent::before {
  background:
    radial-gradient(circle at left center, rgba(215, 47, 38, 0.12), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.08)),
    #101316;
}

.cta-banner {
  display: grid;
  grid-template-columns: 1.2fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px;
  border-radius: var(--radius-lg);
}

.page-hero-inner {
  padding: 28px 0 12px;
  max-width: 820px;
}

.product-detail-layout {
  align-items: start;
}

.gallery-column,
.product-summary {
  display: grid;
  gap: 18px;
}

.gallery-column {
  align-self: start;
  position: sticky;
  top: 94px;
}

.gallery-stage {
  min-height: 460px;
  padding: 22px;
  border-radius: var(--radius-lg);
  background: #edf0f3;
}

.gallery-stage-dark {
  background: linear-gradient(180deg, #dfe3e8 0%, #f7f8fa 100%);
}

.gallery-stage img {
  height: 100%;
  object-fit: contain;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.thumb {
  padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-sm);
  background: #f1f2f4;
  overflow: hidden;
  cursor: pointer;
}

.thumb.is-active {
  outline: 2px solid var(--accent);
}

.lead-text {
  font-size: 1.02rem;
}

.info-strips {
  grid-template-columns: repeat(2, minmax(0, max-content));
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
}

.spec-table th,
.spec-table td {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 120px;
  color: #dde1e7;
}

.spec-table-wide td {
  color: var(--muted);
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.spec-data-table {
  width: 100%;
  min-width: 820px;
  border-collapse: collapse;
}

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

.spec-data-table thead th {
  color: #fff;
  background: rgba(215, 47, 38, 0.84);
}

.spec-data-table tbody td {
  color: var(--muted);
}

.spec-data-table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.035);
  color: #dce3eb;
}

.notice-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.72;
}

.scenario-stack {
  display: grid;
  gap: 18px;
}

.scenario-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: center;
}

.contact-page-layout {
  align-items: start;
}

.contact-info-list article {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.contact-info-list strong {
  display: block;
  color: var(--text);
}

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

.contact-form label {
  display: grid;
  gap: 8px;
  color: #dce1e7;
}

.contact-form .field-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.contact-form .field-label strong {
  color: #ff9f98;
  font-size: 0.92em;
}

.field-wide {
  grid-column: 1 / -1;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.contact-form textarea {
  min-height: 138px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(230, 235, 241, 0.42);
}

.contact-form input.is-invalid,
.contact-form textarea.is-invalid {
  border-color: rgba(239, 79, 69, 0.72);
  box-shadow: 0 0 0 3px rgba(215, 47, 38, 0.12);
}

.field-hint,
.form-note {
  color: var(--muted);
  line-height: 1.7;
}

.field-error {
  color: #ffb2ab;
  font-size: 0.92rem;
  line-height: 1.5;
}

.form-alert {
  margin-bottom: 18px;
  padding: 14px 16px;
  border: 1px solid rgba(239, 79, 69, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(215, 47, 38, 0.12);
  color: #ffd3cf;
  line-height: 1.65;
}

.form-alert strong {
  color: #fff;
}

.success-shell {
  max-width: 860px;
}

.success-panel {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.success-panel h1 {
  max-width: 13ch;
}

.success-panel .hero-actions {
  margin-top: 24px;
}

.site-footer {
  padding: 28px 0 76px;
}

.site-footer-inner {
  grid-template-columns: 1fr auto;
  align-items: end;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.footer-meta article {
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
}

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

.footer-meta strong {
  margin-bottom: 6px;
  color: #eef2f6;
}

.footer-meta span {
  color: var(--muted);
  line-height: 1.6;
}

.footer-links {
  grid-template-columns: repeat(5, max-content);
}

.floating-cta {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  min-height: 54px;
  padding: 0 20px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

@media (max-width: 1080px) {
  .cards-grid-four,
  .cards-grid-three,
  .timeline-grid,
  .instruction-grid,
  .series-grid,
  .series-grid-full {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scenario-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .site-header-inner,
  .hero-layout,
  .split-layout,
  .product-detail-layout,
  .contact-page-layout,
  .cta-banner,
  .site-footer-inner {
    grid-template-columns: 1fr;
  }

  .site-header-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    justify-self: end;
  }

  .site-nav {
    display: none;
    justify-self: stretch;
    grid-column: 1 / -1;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
  }

  .site-header.nav-open .site-nav {
    display: grid;
    gap: 6px;
  }

  .hero-copy {
    padding: 0;
  }

  .gallery-column {
    position: static;
  }

  .hero-overlay-card {
    position: static;
    width: auto;
    margin-top: 16px;
  }

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

  .footer-links {
    grid-template-columns: repeat(2, max-content);
  }

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

@media (max-width: 640px) {
  :root {
    --shell: min(1180px, calc(100% - 20px));
  }

  body {
    padding-bottom: 68px;
    overflow-x: hidden;
  }

  .site-header-inner {
    gap: 10px;
    padding: 10px 0;
  }

  .brand {
    min-width: 0;
    gap: 10px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-text {
    min-width: 0;
  }

  .brand-text strong,
  .brand-text small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .brand-text small {
    display: none;
  }

  .site-nav a {
    padding: 11px 12px;
  }

  .hero-tags,
  .hero-actions,
  .hero-data,
  .info-strips,
  .contact-form,
  .cta-banner-actions {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: repeat(5, max-content);
  }

  .button {
    width: 100%;
    min-height: 46px;
    padding: 0 16px;
  }

  .hero-block,
  .page-hero {
    padding: 22px 0 10px;
  }

  .section-block {
    padding: 18px 0;
  }

  .hero-block .hero-layout {
    min-height: auto;
  }

  .site-header-inner,
  .hero-layout,
  .split-layout,
  .product-detail-layout,
  .contact-page-layout,
  .cta-banner,
  .site-footer-inner {
    gap: 16px;
  }

  h1 {
    max-width: 9.8em;
    font-size: 2.05rem;
    line-height: 1.12;
    overflow-wrap: anywhere;
    word-break: break-all;
    line-break: anywhere;
  }

  h2 {
    font-size: 1.45rem;
    line-height: 1.18;
    overflow-wrap: anywhere;
    word-break: break-all;
    line-break: anywhere;
  }

  h3 {
    font-size: 1.05rem;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  p,
  li,
  .button,
  .hero-tags span,
  .info-strips span,
  .contact-info-list span {
    overflow-wrap: anywhere;
    word-break: break-all;
    line-break: anywhere;
  }

  .section-kicker {
    margin-bottom: 8px;
    font-size: 0.78rem;
  }

  .hero-lead,
  .section-head p,
  .glass-card p,
  .showcase-panel p,
  .bullet-list,
  .scenario-panel p,
  .timeline-item p,
  .contact-info-list span,
  .contact-info-list strong,
  .footer-links,
  .site-footer p,
  .feature-list p,
  .hero-overlay-card li,
  .hero-data span,
  .lead-text {
    line-height: 1.62;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-tags,
  .info-strips {
    display: flex;
    gap: 8px;
    margin: 16px -10px 0;
    padding: 0 10px 4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .hero-tags::-webkit-scrollbar,
  .info-strips::-webkit-scrollbar {
    display: none;
  }

  .hero-tags span,
  .info-strips span {
    flex: 0 0 auto;
    padding: 8px 10px;
    white-space: nowrap;
  }

  .hero-actions,
  .hero-data {
    gap: 10px;
  }

  .hero-data {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 16px;
  }

  .hero-data article,
  .feature-list article {
    padding: 12px;
  }

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

  .hero-image-card {
    padding: 12px;
  }

  .hero-image-card img {
    max-height: 220px;
    aspect-ratio: 4 / 3;
  }

  .hero-overlay-card {
    display: none;
  }

  .section-head {
    margin-bottom: 16px;
  }

  .section-head-compact h2 {
    font-size: 1.35rem;
  }

  .mobile-card-strip {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(76%, 1fr);
    grid-template-columns: none;
    gap: 12px;
    margin-inline: -10px;
    padding: 0 10px 8px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-padding-inline: 10px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }

  .mobile-card-strip::-webkit-scrollbar {
    display: none;
  }

  .mobile-card-strip > * {
    min-width: 0;
    scroll-snap-align: start;
  }

  .hero-copy,
  .glass-card,
  .showcase-panel,
  .scenario-panel,
  .contact-panel,
  .contact-form-panel,
  .success-panel,
  .timeline-item,
  .cta-banner {
    padding: 16px;
    border-radius: var(--radius-lg);
  }

  .scenario-panel {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .scenario-index,
  .timeline-item span {
    width: 34px;
    height: 34px;
    margin-bottom: 12px;
  }

  .showcase-panel img {
    aspect-ratio: 4 / 3;
  }

  .gallery-stage {
    min-height: 220px;
    padding: 12px;
  }

  .gallery-thumbs {
    display: flex;
    grid-template-columns: none;
    gap: 8px;
    margin-inline: -10px;
    padding: 0 10px 4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .gallery-thumbs::-webkit-scrollbar {
    display: none;
  }

  .thumb {
    flex: 0 0 64px;
  }

  .lead-text {
    font-size: 1rem;
  }

  .spec-table th,
  .spec-table td {
    padding: 10px 0;
  }

  .spec-table th {
    width: 96px;
  }

  .table-wrap {
    margin-inline: -10px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .spec-data-table {
    min-width: 620px;
  }

  .spec-data-table th,
  .spec-data-table td {
    padding: 12px;
  }

  .contact-form {
    gap: 12px;
  }

  .contact-form input,
  .contact-form textarea {
    padding: 12px 14px;
  }

  .contact-form textarea {
    min-height: 112px;
  }

  .contact-info-list article {
    padding: 12px 0;
  }

  .notice-list {
    gap: 8px;
    padding-left: 18px;
    line-height: 1.62;
  }

  .section-dark::before,
  .section-accent::before {
    inset: 8px 0;
  }

  .site-footer {
    padding: 16px 0 24px;
  }

  .site-footer h3 {
    font-size: 1rem;
  }

  .footer-meta {
    display: flex;
    gap: 10px;
    margin: 12px -10px 0;
    padding: 0 10px 4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .footer-meta::-webkit-scrollbar,
  .footer-links::-webkit-scrollbar {
    display: none;
  }

  .footer-meta article {
    flex: 0 0 min(78%, 280px);
  }

  .footer-links {
    display: flex;
    gap: 8px;
    margin-inline: -10px;
    padding: 0 10px 4px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .footer-links a {
    flex: 0 0 auto;
    padding: 8px 10px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.035);
  }

  .floating-cta {
    right: 10px;
    bottom: 10px;
    left: auto;
    justify-content: center;
    min-width: 116px;
    max-width: calc(100% - 20px);
    min-height: 46px;
    padding: 0 16px;
    border-radius: 999px;
  }

  body.nav-open .floating-cta {
    display: none;
  }

  .public-home-page {
    padding-bottom: 0;
    background: #0b0e12;
  }

  .public-home-page .site-noise,
  .public-home-page .site-header,
  .public-home-page .site-footer,
  .public-home-page .floating-cta {
    display: none;
  }

  .public-home-page .mobile-h5-page {
    display: block;
    min-height: 100vh;
    padding: 12px 0 24px;
    background:
      linear-gradient(180deg, rgba(215, 47, 38, 0.14) 0%, transparent 28%),
      #0b0e12;
  }

  .public-home-page .mobile-h5-page ~ section {
    display: none;
  }

  .mobile-h5-shell {
    display: grid;
    width: min(100% - 20px, 430px);
    margin: 0 auto;
    gap: 14px;
  }

  .mobile-h5-carousel {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #eef1f4;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.32);
  }

  .mobile-h5-carousel-track {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none;
  }

  .mobile-h5-carousel-track::-webkit-scrollbar {
    display: none;
  }

  .mobile-h5-slide {
    position: relative;
    flex: 0 0 100%;
    margin: 0;
    scroll-snap-align: start;
    background: #eef1f4;
  }

  .mobile-h5-slide img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    padding: 12px;
  }

  .mobile-h5-slide figcaption {
    position: absolute;
    right: 10px;
    bottom: 10px;
    max-width: calc(100% - 20px);
    padding: 6px 9px;
    border-radius: var(--radius-sm);
    color: #f7f9fb;
    background: rgba(8, 10, 13, 0.76);
    font-size: 0.78rem;
    line-height: 1.35;
  }

  .mobile-h5-product-intro,
  .mobile-h5-work-order {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.055);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.24);
  }

  .mobile-h5-kicker {
    margin: 0 0 8px;
    color: var(--steel);
    font-size: 0.78rem;
    font-weight: 700;
  }

  .mobile-h5-product-intro h1 {
    max-width: none;
    font-size: 1.66rem;
    line-height: 1.18;
    word-break: break-word;
  }

  .mobile-h5-work-order h2 {
    font-size: 1.28rem;
    line-height: 1.2;
  }

  .mobile-h5-lead {
    margin-top: 10px;
    color: var(--muted);
    font-size: 0.98rem;
    line-height: 1.68;
    word-break: break-word;
  }

  .mobile-h5-series-list {
    display: grid;
    gap: 10px;
    margin-top: 14px;
  }

  .mobile-h5-series-list article {
    display: grid;
    gap: 6px;
    padding: 12px;
    border: 1px solid rgba(230, 235, 241, 0.12);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.035);
  }

  .mobile-h5-series-list strong {
    color: #fff;
    font-size: 1rem;
  }

  .mobile-h5-series-list span,
  .mobile-h5-series-list p {
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.56;
    word-break: break-word;
  }

  .mobile-h5-inquiry-form {
    margin-top: 14px;
    grid-template-columns: 1fr;
  }

  .mobile-h5-inquiry-form .form-alert {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }

  .mobile-h5-inquiry-form label {
    gap: 6px;
  }

  .mobile-h5-inquiry-form input,
  .mobile-h5-inquiry-form textarea {
    min-height: 46px;
    padding: 11px 12px;
    background: rgba(255, 255, 255, 0.06);
  }

  .mobile-h5-inquiry-form textarea {
    min-height: 96px;
  }

  .mobile-h5-inquiry-form .button {
    margin-top: 2px;
  }
}