:root {
  --deep-navy: #0B1D3A;
  --electric-orange: #FF6B35;
  --neon-green: #39FF14;
  --charcoal: #1C1C1E;
  --off-white: #F5F7FA;
  --jewel-burgundy: #6B2142;
  --jewel-teal: #1B6B5A;
  --muted-steel: #7A8FA0;
  --highlight-yellow: #FFD700;
  --soft-black: #0E1726;
  --font-heading: 'Anton', 'Impact', 'PingFang SC', 'Noto Sans SC', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --rail-width: 128px;
  --content-max: 1280px;
  --radius: 6px;
  --transition-fast: 180ms ease;
  --transition-base: 320ms cubic-bezier(0.4, 0, 0.2, 1);
  --z-nav: 1000;
  --z-overlay: 900;
  --z-progress: 1200;
  --z-skip: 2000;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  background-color: var(--deep-navy);
  color: var(--off-white);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  letter-spacing: 0.02em;
}

::selection {
  background: var(--electric-orange);
  color: var(--soft-black);
}

:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding-top: 64px;
  padding-bottom: 64px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  margin: -1px;
  padding: 0;
  border: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
  border-color: rgba(255, 107, 53, 0.32);
  transform: translateY(-2px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.btn-primary {
  background: var(--electric-orange);
  color: var(--soft-black);
  border-color: var(--electric-orange);
  box-shadow: 0 0 16px rgba(255, 107, 53, 0.25);
}

.btn-primary:hover {
  background: #ff7a4d;
  border-color: #ff7a4d;
  box-shadow: 0 0 28px rgba(255, 107, 53, 0.45);
  transform: translateY(-2px) skewX(-2deg);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.25);
  color: var(--off-white);
}

.btn-ghost:hover {
  border-color: var(--electric-orange);
  color: var(--electric-orange);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.75rem;
}

.btn[disabled] {
  opacity: 0.5;
  pointer-events: none;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--electric-orange);
}

.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--electric-orange);
  box-shadow: 0 0 8px rgba(255, 107, 53, 0.5);
}

.img-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  background:
    repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.02) 0 8px, transparent 8px 16px),
    var(--soft-black);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
}

.img-frame::before {
  content: '';
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  pointer-events: none;
}

.img-frame::after {
  content: 'IMAGE AREA';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.18);
  white-space: nowrap;
  pointer-events: none;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 0.78rem;
  color: var(--muted-steel);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: '/';
  color: rgba(255, 255, 255, 0.2);
}

.breadcrumb a {
  color: var(--muted-steel);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--electric-orange);
}

.breadcrumb [aria-current="page"] {
  color: var(--off-white);
}

.site-header {
  position: relative;
  z-index: 50;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: var(--z-skip);
  padding: 10px 18px;
  background: var(--electric-orange);
  color: var(--soft-black);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 4px;
  box-shadow: 0 0 16px rgba(255, 107, 53, 0.4);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 12px;
}

.skip-link:focus-visible {
  outline: none;
}

@media (min-width: 1024px) {
  .skip-link {
    left: calc(var(--rail-width) + 20px);
  }
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  z-index: var(--z-progress);
  background: linear-gradient(90deg, var(--electric-orange) 0%, var(--highlight-yellow) 50%, var(--neon-green) 100%);
  box-shadow: 0 0 8px rgba(255, 107, 53, 0.4);
  pointer-events: none;
}

.topbar {
  background: rgba(6, 10, 18, 0.88);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar-inner {
  max-width: calc(var(--content-max) + 64px);
  margin: 0 auto;
  padding: 0 32px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.topbar-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 8px var(--neon-green);
  flex-shrink: 0;
  animation: pulse-dot 2.2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 6px var(--neon-green);
  }
  50% {
    opacity: 0.45;
    box-shadow: 0 0 16px var(--neon-green);
  }
}

.topbar-text {
  font-size: 0.72rem;
  color: var(--muted-steel);
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-contact {
  font-size: 0.72rem;
  color: var(--muted-steel);
  white-space: nowrap;
}

.brandbar {
  display: block;
  background: var(--deep-navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.brandbar-inner {
  max-width: calc(var(--content-max) + 64px);
  margin: 0 auto;
  padding: 0 16px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 32px;
  background: var(--electric-orange);
  color: var(--soft-black);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  transform: skewX(-10deg);
  border-radius: 4px;
  box-shadow: 0 0 18px rgba(255, 107, 53, 0.35);
  flex-shrink: 0;
}

.brand-cn {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-en {
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--muted-steel);
  text-transform: uppercase;
}

.brandbar-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.header-cta {
  border-radius: 4px;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.02);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--electric-orange);
}

.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--off-white);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle-label {
  font-size: 0.55rem;
  line-height: 1;
  color: var(--muted-steel);
  letter-spacing: 0.1em;
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--electric-orange);
  background: rgba(255, 107, 53, 0.08);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-nav);
  display: flex;
  flex-direction: column;
  width: var(--rail-width);
  background:
    radial-gradient(circle at 30% 4%, rgba(255, 107, 53, 0.1), transparent 45%),
    linear-gradient(180deg, var(--soft-black) 0%, var(--deep-navy) 100%);
  border-right: 1px solid rgba(255, 107, 53, 0.12);
}

.nav-head {
  position: relative;
  padding: 28px 16px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-head::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.45), rgba(255, 255, 255, 0.08) 70%, transparent);
}

.rail-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  margin: 0 auto;
}

.rail-brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 44px;
  background: var(--electric-orange);
  color: var(--soft-black);
  font-family: var(--font-heading);
  font-size: 1.7rem;
  line-height: 1;
  transform: skewX(-10deg);
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
}

.rail-brand-sub {
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--muted-steel);
  text-transform: uppercase;
  white-space: nowrap;
}

.nav-close {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 4px;
  color: var(--off-white);
  font-size: 1.5rem;
  line-height: 1;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.nav-close:hover {
  border-color: var(--electric-orange);
  color: var(--electric-orange);
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 0;
  margin: 0;
  list-style: none;
}

.nav-item a {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 12px 11px 16px;
  color: var(--off-white);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-index {
  font-family: var(--font-heading);
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--muted-steel);
  letter-spacing: 0.06em;
  transition: color var(--transition-fast);
}

.nav-item a:hover {
  color: var(--electric-orange);
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.1), transparent);
}

.nav-item a[aria-current="page"] {
  color: var(--electric-orange);
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.16), rgba(255, 107, 53, 0.02));
}

.nav-item a[aria-current="page"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--neon-green);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.7);
}

.nav-item a[aria-current="page"] .nav-index {
  color: var(--neon-green);
}

.nav-foot {
  position: relative;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 14px 0 22px;
}

.nav-foot::before {
  content: '';
  position: absolute;
  top: 0;
  left: 16px;
  right: 16px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 107, 53, 0.4), transparent);
}

.rail-fav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 36px;
  height: 36px;
  border-radius: 4px;
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.35);
  color: var(--electric-orange);
  font-size: 1rem;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.rail-fav:hover {
  background: var(--electric-orange);
  color: var(--soft-black);
  box-shadow: 0 0 16px rgba(255, 107, 53, 0.5);
  transform: translateY(-2px);
}

.rail-fav-text {
  display: none;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.nav-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon-green);
  box-shadow: 0 0 6px rgba(57, 255, 20, 0.8);
  animation: pulse-dot 2s ease-in-out infinite;
}

.nav-live-text {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--muted-steel);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  background: rgba(4, 8, 16, 0.65);
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav-overlay[data-open] {
  opacity: 1;
  pointer-events: auto;
}

body.is-nav-open {
  overflow: hidden;
}

#main-content {
  display: block;
  min-height: 60vh;
  margin-left: 0;
}

@media (max-width: 1023px) {
  .site-nav {
    width: 300px;
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform var(--transition-base), visibility var(--transition-base);
    border-right: 1px solid rgba(255, 107, 53, 0.25);
    box-shadow: 8px 0 32px rgba(0, 0, 0, 0.5);
  }

  .site-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }

  .nav-head {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .rail-brand {
    flex-direction: row;
    gap: 12px;
    margin: 0;
  }

  .rail-brand-mark {
    width: 40px;
    height: 34px;
    font-size: 1.3rem;
  }

  .nav-close {
    display: inline-flex;
    flex-shrink: 0;
  }

  .nav-list {
    padding-top: 8px;
    flex: 1;
  }

  .nav-item a {
    padding: 14px 20px;
    font-size: 1rem;
  }

  .nav-item a[aria-current="page"]::before {
    top: 8px;
    bottom: 8px;
  }

  .nav-foot {
    flex-direction: row;
    justify-content: center;
    gap: 20px;
    padding: 16px 0 28px;
  }

  .rail-fav {
    width: auto;
    height: 38px;
    padding: 0 14px;
  }

  .rail-fav-text {
    display: inline;
  }

  .topbar {
    margin-left: 0;
  }
}

@media (min-width: 1024px) {
  .brandbar {
    display: none;
  }

  .topbar {
    margin-left: var(--rail-width);
  }

  .nav-overlay {
    display: none;
  }

  body.is-nav-open {
    overflow: auto;
  }

  #main-content,
  .site-footer {
    margin-left: var(--rail-width);
  }
}

.site-footer {
  position: relative;
  background:
    radial-gradient(circle at 85% 0%, rgba(107, 33, 66, 0.3), transparent 55%),
    var(--soft-black);
  margin-left: 0;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--electric-orange), var(--jewel-burgundy) 50%, var(--neon-green));
  opacity: 0.85;
}

.footer-top {
  max-width: calc(var(--content-max) + 64px);
  margin: 0 auto;
  padding: 56px 32px 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.footer-brand .brand-mark {
  width: 44px;
  height: 36px;
  font-size: 1.6rem;
}

.footer-tagline {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted-steel);
  max-width: 360px;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--off-white);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-col-title::before {
  content: '';
  width: 16px;
  height: 2px;
  background: var(--electric-orange);
  box-shadow: 0 0 6px rgba(255, 107, 53, 0.5);
}

.footer-col-title-alt {
  margin-top: 28px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--muted-steel);
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--electric-orange);
  padding-left: 4px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--muted-steel);
  line-height: 1.6;
}

.footer-phone {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--off-white);
  letter-spacing: 0.04em;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-bottom-inner {
  max-width: calc(var(--content-max) + 64px);
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
}

.footer-copyright,
.footer-icp,
.footer-service {
  font-size: 0.72rem;
  color: var(--muted-steel);
  margin: 0;
}

.footer-service {
  margin-left: auto;
}

.back-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  background: var(--electric-orange);
  color: var(--soft-black);
  font-size: 1.1rem;
  line-height: 1;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.back-top:hover {
  background: var(--highlight-yellow);
  transform: translateY(-4px) skewX(-4deg);
  box-shadow: 0 8px 28px rgba(255, 215, 0, 0.4);
}

.back-top[hidden] {
  display: none;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--soft-black);
}

::-webkit-scrollbar-thumb {
  background: var(--muted-steel);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--electric-orange);
}

@media (max-width: 1023px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 44px 24px 32px;
  }

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

  .footer-bottom-inner {
    padding: 16px 24px;
  }
}

@media (max-width: 600px) {
  .section {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .grid {
    gap: 16px;
  }

  .topbar-inner {
    justify-content: center;
    padding: 0 16px;
  }

  .topbar-contact {
    display: none;
  }

  .topbar-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .brandbar-inner {
    padding: 0 12px;
  }

  .header-cta {
    font-size: 0.7rem;
    padding: 6px 10px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 20px 28px;
  }

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

  .footer-service {
    margin-left: 0;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px 20px;
  }

  .back-top {
    right: 14px;
    bottom: 16px;
    width: 40px;
    height: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}