:root {
  --deep-space: #0A0E27;
  --electric-blue: #1E3A8A;
  --vibrant-orange: #FF5E3A;
  --fluorescent-pink: #FF2E63;
  --fluorescent-green: #39FF14;
  --indigo: #6366F1;
  --wine-red: #8A1C3A;
  --text-light: #E5E7EB;
  --white: #FFFFFF;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.12);
  --font-heading: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --container: 1200px;
  --radius: 20px;
  --radius-sm: 12px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-light);
  background-color: var(--deep-space);
  background-image:
    radial-gradient(ellipse 80% 55% at 18% -12%, rgba(30, 58, 138, 0.38) 0%, transparent 60%),
    radial-gradient(ellipse 60% 42% at 86% 4%, rgba(255, 94, 58, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 55% 45% at 50% 112%, rgba(99, 102, 241, 0.14) 0%, transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
}

body::selection {
  background: rgba(255, 94, 58, 0.85);
  color: var(--white);
}
::selection {
  background: rgba(255, 94, 58, 0.85);
  color: var(--white);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease, opacity 0.25s ease;
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

:focus-visible {
  outline: 2px solid var(--vibrant-orange);
  outline-offset: 3px;
  border-radius: 4px;
}

::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--deep-space);
}
::-webkit-scrollbar-thumb {
  background: var(--electric-blue);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--vibrant-orange);
}

.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}

#main-content {
  scroll-margin-top: 96px;
}

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

.skip-link {
  position: fixed;
  top: 8px;
  left: 50%;
  z-index: 3000;
  background: linear-gradient(135deg, var(--vibrant-orange), var(--fluorescent-pink));
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 999px;
  box-shadow: 0 6px 24px rgba(255, 94, 58, 0.45);
  transform: translateX(-50%) translateY(-200%);
  transition: transform 0.3s var(--ease);
  white-space: nowrap;
}
.skip-link:focus {
  transform: translateX(-50%) translateY(0);
}

.site-header {
  position: sticky;
  top: 16px;
  z-index: 1000;
  padding: 0 20px;
}

.nav-capsule {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 10px 10px 10px 18px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  box-shadow: 0 10px 40px rgba(2, 6, 23, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  flex-shrink: 0;
}
.brand:hover .brand-mark {
  transform: rotate(0deg) scale(1.06);
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--vibrant-orange) 0%, var(--fluorescent-pink) 100%);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 19px;
  line-height: 1;
  box-shadow: 0 4px 18px rgba(255, 94, 58, 0.45);
  transform: rotate(-6deg);
  transition: transform 0.3s var(--ease);
}
.brand-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.site-nav a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: 14.5px;
  font-weight: 500;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.78);
  transition: background 0.28s var(--ease), color 0.28s var(--ease), box-shadow 0.28s var(--ease);
  white-space: nowrap;
}
.site-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}
.site-nav a[aria-current="page"] {
  background: linear-gradient(135deg, var(--vibrant-orange), var(--fluorescent-pink));
  color: var(--white);
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(255, 94, 58, 0.35);
}
.site-nav a[aria-current="page"]:hover {
  box-shadow: 0 6px 24px rgba(255, 46, 99, 0.45);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid var(--glass-border);
  margin-left: auto;
  flex-shrink: 0;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 94, 58, 0.4);
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .nav-toggle {
    display: flex;
  }
  .site-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: rgba(10, 14, 39, 0.97);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    backdrop-filter: blur(20px) saturate(140%);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 12px;
    margin-left: 0;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transform-origin: top center;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s var(--ease);
  }
  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .site-nav a {
    padding: 13px 18px;
    border-radius: 12px;
    font-size: 15.5px;
  }
  .site-nav a[aria-current="page"] {
    background: linear-gradient(135deg, var(--vibrant-orange), var(--fluorescent-pink));
  }
}

.site-footer {
  position: relative;
  margin-top: 120px;
  background: linear-gradient(180deg, var(--deep-space) 0%, #0d1533 60%, #101c45 130%);
  border-top: 1px solid rgba(255, 94, 58, 0.22);
}

.footer-data-tape {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--glass-border);
  background: linear-gradient(90deg, rgba(255, 94, 58, 0.07), rgba(255, 46, 99, 0.03), rgba(30, 58, 138, 0.06));
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
  color: rgba(229, 231, 235, 0.6);
  text-align: center;
  letter-spacing: 0.01em;
}
.tape-pulse {
  flex-shrink: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--fluorescent-green);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.8);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 6px rgba(57, 255, 20, 0.8), 0 0 14px rgba(57, 255, 20, 0.4);
  }
  50% {
    opacity: 0.55;
    box-shadow: 0 0 2px rgba(57, 255, 20, 0.4), 0 0 4px rgba(57, 255, 20, 0.2);
  }
}

.footer-core {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 24px 40px;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr 1fr;
  gap: 48px;
  align-items: start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}
.footer-brand .brand {
  margin-bottom: 6px;
}
.footer-slogan {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--fluorescent-green);
  text-transform: uppercase;
}
.footer-desc {
  max-width: 32em;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(229, 231, 235, 0.55);
}

.footer-title {
  position: relative;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
  padding-bottom: 10px;
  margin-bottom: 18px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: linear-gradient(90deg, var(--vibrant-orange), var(--fluorescent-pink));
  border-radius: 2px;
}

.footer-link-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 20px;
}
.footer-link-group a {
  display: inline-block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(229, 231, 235, 0.72);
  transition: color 0.25s ease, transform 0.25s ease;
}
.footer-link-group a:hover {
  color: var(--white);
  transform: translateX(4px);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(229, 231, 235, 0.72);
}
.footer-contact a {
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 14.5px;
}
.footer-contact a:hover {
  color: var(--vibrant-orange);
}
.footer-support {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(229, 231, 235, 0.48);
  border-left: 2px solid rgba(57, 255, 20, 0.55);
  padding-left: 10px;
}

.footer-legal {
  max-width: var(--container);
  margin: 0 auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}
.footer-legal-links {
  display: flex;
  gap: 24px;
}
.footer-legal-links a {
  font-size: 13px;
  color: rgba(229, 231, 235, 0.65);
  transition: color 0.25s ease;
}
.footer-legal-links a:hover {
  color: var(--vibrant-orange);
}
.footer-legal-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(229, 231, 235, 0.38);
}

@media (max-width: 1023px) {
  .footer-core {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .footer-core {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 44px;
  }
  .footer-brand {
    grid-column: auto;
  }
  .footer-link-group {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .footer-legal {
    flex-direction: column;
    align-items: flex-start;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 26px;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}
.btn-primary {
  background: linear-gradient(135deg, var(--vibrant-orange) 0%, var(--fluorescent-pink) 100%);
  color: var(--white);
  box-shadow: 0 6px 24px rgba(255, 94, 58, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(255, 46, 99, 0.4);
}
.btn-ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: var(--white);
}
.btn-ghost:hover {
  border-color: var(--vibrant-orange);
  color: var(--vibrant-orange);
  background: rgba(255, 94, 58, 0.06);
}
.btn-small {
  min-height: 34px;
  padding: 6px 16px;
  font-size: 13px;
}

.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  color: #111827;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
.card h1, .card h2, .card h3, .card h4, .card h5, .card h6 {
  color: #111827;
}
.card p {
  color: #4B5563;
}

.card-glass {
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px;
  color: var(--text-light);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
}
.card-glass:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 94, 58, 0.35);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}
.card-glass h1, .card-glass h2, .card-glass h3, .card-glass h4, .card-glass h5, .card-glass h6 {
  color: var(--white);
}
.card-glass p {
  color: rgba(229, 231, 235, 0.75);
}

.data-stat {
  font-family: var(--font-mono);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--white);
}
.data-stat--orange {
  color: var(--vibrant-orange);
}
.data-stat--green {
  color: var(--fluorescent-green);
}

.data-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(229, 231, 235, 0.85);
  white-space: nowrap;
}
.dot-live {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fluorescent-green);
  box-shadow: 0 0 8px rgba(57, 255, 20, 0.8);
  animation: pulse-dot 2s ease-in-out infinite;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}
.section-eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--vibrant-orange);
  margin-bottom: 8px;
}
.section-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.2;
  color: var(--white);
  letter-spacing: -0.01em;
}
@media (max-width: 767px) {
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

.zone-stripe {
  display: block;
  width: 64px;
  height: 4px;
  border-radius: 2px;
  margin-bottom: 14px;
}
.zone-stripe--orange {
  background: linear-gradient(90deg, var(--vibrant-orange), var(--fluorescent-pink));
}
.zone-stripe--indigo {
  background: linear-gradient(90deg, var(--indigo), var(--electric-blue));
}
.zone-stripe--wine {
  background: linear-gradient(90deg, var(--wine-red), #b3284a);
}
.zone-stripe--green {
  background: linear-gradient(90deg, var(--fluorescent-green), #85ff7a);
}

.index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.index-list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.index-list li:first-child {
  padding-top: 0;
}
.index-list li:last-child {
  border-bottom: none;
}
.index-num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--vibrant-orange);
  min-width: 34px;
}
.index-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.45;
  transition: color 0.25s ease;
}
a.index-title:hover {
  color: var(--vibrant-orange);
}
.index-meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(229, 231, 235, 0.45);
  white-space: nowrap;
}
@media (max-width: 767px) {
  .index-list li {
    flex-wrap: wrap;
    gap: 4px 12px;
  }
  .index-meta {
    margin-left: 46px;
    width: 100%;
  }
}

.marginal-note {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--fluorescent-green);
  border-left: 2px solid rgba(57, 255, 20, 0.55);
  padding: 4px 0 4px 14px;
  margin: 1.2em 0;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: rgba(229, 231, 235, 0.52);
}
.breadcrumb a {
  color: rgba(229, 231, 235, 0.72);
  transition: color 0.25s ease;
}
.breadcrumb a:hover {
  color: var(--vibrant-orange);
}
.breadcrumb-item {
  display: inline-flex;
  align-items: center;
}
.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: rgba(255, 255, 255, 0.28);
  margin: 0 6px;
}
.breadcrumb [aria-current="page"] {
  color: var(--white);
  font-weight: 600;
}

.content {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
}
.content h1 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.2;
  margin-bottom: 0.6em;
}
.content h2 {
  font-size: clamp(21px, 2.6vw, 28px);
  margin: 2em 0 0.6em;
}
.content h3 {
  font-size: clamp(17px, 1.8vw, 20px);
  margin: 1.6em 0 0.5em;
}
.content p {
  margin-bottom: 1.35em;
  color: rgba(229, 231, 235, 0.82);
  line-height: 1.85;
}
.content a {
  color: var(--vibrant-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.content a:hover {
  color: var(--fluorescent-pink);
}
.content ul, .content ol {
  margin: 0 0 1.35em 1.2em;
  color: rgba(229, 231, 235, 0.82);
}
.content li {
  margin-bottom: 0.4em;
}
.content blockquote {
  border-left: 3px solid var(--vibrant-orange);
  padding: 12px 20px;
  margin: 1.6em 0;
  background: rgba(255, 94, 58, 0.06);
  border-radius: 0 12px 12px 0;
  font-style: italic;
  color: rgba(229, 231, 235, 0.8);
}

.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--electric-blue) 0%, var(--deep-space) 100%);
  min-height: 100px;
}
.img-frame::before {
  content: "";
  display: block;
  padding-top: 66.66%;
}
.img-frame--wide::before {
  padding-top: 56.25%;
}
.img-frame--tall::before {
  padding-top: 120%;
}
.img-frame--square::before {
  padding-top: 100%;
}
.img-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.img-frame:hover img {
  transform: scale(1.03);
}
.img-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.grid {
  display: grid;
  gap: 24px;
}
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
@media (max-width: 767px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}
@media (min-width: 768px) {
  .grid-12 .span-3 { grid-column: span 3; }
  .grid-12 .span-4 { grid-column: span 4; }
  .grid-12 .span-6 { grid-column: span 6; }
  .grid-12 .span-8 { grid-column: span 8; }
  .grid-12 .span-9 { grid-column: span 9; }
  .grid-12 .span-12 { grid-column: span 12; }
}
@media (max-width: 767px) {
  .grid-12 {
    grid-template-columns: 1fr;
  }
  .grid-12 .span-3,
  .grid-12 .span-4,
  .grid-12 .span-6,
  .grid-12 .span-8,
  .grid-12 .span-9,
  .grid-12 .span-12 {
    grid-column: span 1;
  }
}

[data-scroll-progress] {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--vibrant-orange), var(--fluorescent-pink), var(--fluorescent-green));
  border-radius: 0 3px 3px 0;
  z-index: 3000;
  pointer-events: none;
}

[data-back-top] {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 900;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--vibrant-orange), var(--fluorescent-pink));
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  border: none;
  box-shadow: 0 6px 24px rgba(255, 94, 58, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s var(--ease);
}
[data-back-top].is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
[data-back-top]:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 46, 99, 0.5);
}

@media (prefers-reduced-motion: no-preference) {
  [data-reveal]:not([data-revealed]) {
    opacity: 0;
    visibility: hidden;
    transform: translateY(28px);
  }
  [data-reveal][data-revealed] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.75s var(--ease), transform 0.75s var(--ease), visibility 0.75s;
  }
}

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