:root {
  --bg-deep: #0A0A10;
  --bg-card: #12121C;
  --bg-elevated: #1A1A28;
  --neon-purple: #BC13FE;
  --neon-blue: #00E5FF;
  --neon-pink: #FF2A6D;
  --gold: #FFD700;
  --neon-green: #05FFA1;
  --text-main: #E0E0FF;
  --text-dim: #8A8AA8;
  --text-bright: #FFFFFF;
  --font-headline: 'Orbitron', 'Noto Sans SC Black', 'PingFang SC', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --radius: 20px;
  --radius-lg: 28px;
  --radius-sm: 12px;
  --gradient-main: linear-gradient(135deg, #BC13FE 0%, #00E5FF 100%);
  --shadow-purple: 0 0 24px rgba(188, 19, 254, .35);
  --content-width: 1240px;
}

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

* {
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-deep);
  background-image: radial-gradient(circle at 15% 20%, rgba(188, 19, 254, .12), transparent 40%),
    radial-gradient(circle at 85% 75%, rgba(0, 229, 255, .08), transparent 35%),
    radial-gradient(circle at 50% 110%, rgba(255, 42, 109, .06), transparent 45%);
  color: var(--text-main);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

ul,
ol {
  list-style: none;
}

a {
  color: var(--neon-purple);
  text-decoration: none;
}

a:hover {
  color: var(--neon-blue);
  text-decoration: underline;
}

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 300;
  background: var(--neon-purple);
  color: #fff;
  padding: 12px 20px;
  border-radius: 12px;
  font-family: var(--font-body);
  font-weight: 700;
  transition: top .2s ease;
}

.skip-link:focus {
  top: 16px;
  color: #fff;
  text-decoration: none;
}

.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-purple), var(--neon-blue), var(--neon-pink));
  z-index: 200;
  transition: width .1s linear;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 16, .88);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(188, 19, 254, .3);
}

.nav-shell {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  min-height: 72px;
}

.brand {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 10px;
  line-height: 1.3;
  min-width: 0;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .1em;
  padding: 4px 10px;
  border-radius: 10px;
  background: rgba(188, 19, 254, .18);
  border: 1px solid rgba(188, 19, 254, .4);
  color: var(--neon-pink);
}

.brand-name {
  color: var(--text-bright);
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 21px;
  letter-spacing: .08em;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .brand-name {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.brand-sub {
  flex-basis: 100%;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: .04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
  transition: background .2s ease, color .2s ease, box-shadow .2s ease;
}

.nav-link:hover {
  background: rgba(188, 19, 254, .15);
  color: var(--neon-purple);
  text-decoration: none;
  box-shadow: 0 0 12px rgba(188, 19, 254, .25);
}

.nav-link[aria-current="page"] {
  background: linear-gradient(135deg, rgba(188, 19, 254, .25), rgba(0, 229, 255, .2));
  color: var(--neon-blue);
  box-shadow: inset 0 0 0 1px var(--neon-blue);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-main);
  color: #fff;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 0 18px rgba(188, 19, 254, .4);
  transition: box-shadow .2s ease, transform .2s ease;
  white-space: nowrap;
}

.header-cta:hover {
  color: #fff;
  text-decoration: none;
  box-shadow: 0 0 28px rgba(0, 229, 255, .5);
  transform: translateY(-1px);
}

.cta-arrow {
  font-family: var(--font-mono);
  font-size: 16px;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 40px;
  border: 1px solid var(--neon-purple);
  border-radius: 12px;
  background: rgba(188, 19, 254, .08);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--neon-blue);
  border-radius: 2px;
  transition: transform .25s ease, opacity .25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  margin-top: auto;
  background: linear-gradient(180deg, var(--bg-card), var(--bg-deep));
  border-top: 1px solid rgba(0, 229, 255, .25);
  padding: 48px 24px 24px;
}

.footer-grid {
  max-width: var(--content-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr .8fr;
  gap: 40px;
}

.footer-about,
.footer-contact,
.footer-legal {
  min-width: 0;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand-mark {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: .1em;
  padding: 4px 10px;
  border-radius: 10px;
  background: rgba(188, 19, 254, .18);
  border: 1px solid rgba(188, 19, 254, .4);
  color: var(--neon-pink);
}

.footer-brand-name {
  font-family: var(--font-headline);
  font-weight: 900;
  font-size: 20px;
  color: var(--text-bright);
  letter-spacing: .08em;
}

.footer-desc {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 14px;
  max-width: 36em;
}

.footer-trust {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--neon-green);
  background: rgba(5, 255, 161, .08);
  border: 1px solid rgba(5, 255, 161, .3);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
}

.footer-title {
  font-family: var(--font-headline);
  font-size: 14px;
  color: var(--neon-blue);
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-list li {
  font-size: 14px;
  color: var(--text-main);
}

.footer-list a {
  color: var(--neon-purple);
  transition: color .2s ease;
}

.footer-list a:hover {
  color: var(--neon-pink);
  text-decoration: none;
}

.footer-icp {
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.footer-icp span {
  color: var(--gold);
  font-weight: 700;
}

.scroll-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  border: 1px solid var(--neon-purple);
  background: rgba(10, 10, 16, .9);
  color: var(--neon-blue);
  font-size: 20px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 150;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease, box-shadow .2s ease;
}

.scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  box-shadow: 0 0 20px rgba(0, 229, 255, .4);
  color: var(--neon-pink);
}

.main-content {
  flex: 1;
  width: 100%;
}

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

.container--narrow {
  max-width: 780px;
}

.section-block {
  padding: 48px 0;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 24px;
}

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

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

.card {
  background: var(--bg-card);
  border: 1px solid rgba(138, 138, 168, .2);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--neon-purple);
  box-shadow: var(--shadow-purple);
}

.card--gradient {
  background: linear-gradient(145deg, rgba(188, 19, 254, .15), rgba(0, 229, 255, .05));
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: 999px;
  border: 1px solid var(--neon-purple);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
  text-decoration: none;
}

.btn:hover {
  background: rgba(188, 19, 254, .15);
  box-shadow: 0 0 16px rgba(188, 19, 254, .3);
  color: var(--text-bright);
  text-decoration: none;
}

.btn--primary {
  background: var(--gradient-main);
  border: none;
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 229, 255, .25);
}

.btn--primary:hover {
  color: #fff;
  box-shadow: 0 0 28px rgba(188, 19, 254, .45);
}

.btn--ghost {
  border-color: var(--neon-blue);
  color: var(--neon-blue);
}

.btn--ghost:hover {
  background: rgba(0, 229, 255, .1);
  color: var(--neon-blue);
}

.btn--block {
  display: flex;
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(188, 19, 254, .15);
  color: var(--neon-purple);
  border: 1px solid rgba(188, 19, 254, .3);
}

.badge--gold {
  background: rgba(255, 215, 0, .12);
  color: var(--gold);
  border-color: rgba(255, 215, 0, .35);
}

.badge--pink {
  background: rgba(255, 42, 109, .12);
  color: var(--neon-pink);
  border-color: rgba(255, 42, 109, .35);
}

.badge--blue {
  background: rgba(0, 229, 255, .12);
  color: var(--neon-blue);
  border-color: rgba(0, 229, 255, .35);
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, .04);
  color: var(--text-dim);
  border: 1px solid rgba(255, 255, 255, .06);
}

.panel {
  background: var(--bg-card);
  border: 1px solid rgba(138, 138, 168, .2);
  border-radius: var(--radius);
  padding: 24px;
}

.panel-title {
  font-family: var(--font-headline);
  font-size: 18px;
  color: var(--text-bright);
  margin-bottom: 12px;
}

.lead {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-main);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: var(--neon-blue);
}

.breadcrumb a:hover {
  color: var(--neon-pink);
}

.media-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(145deg, rgba(188, 19, 254, .12), rgba(0, 229, 255, .08));
  border: 1px solid rgba(0, 229, 255, .2);
  min-height: 160px;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(188, 19, 254, .15), rgba(255, 42, 109, .1), rgba(0, 229, 255, .15));
  opacity: .6;
}

.media-frame[data-label]::after {
  content: attr(data-label);
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
  white-space: nowrap;
}

.media-frame--wide {
  aspect-ratio: 16 / 9;
}

.media-frame--tall {
  aspect-ratio: 3 / 4;
}

.media-frame--grid {
  aspect-ratio: 4 / 3;
}

.text-gradient {
  color: var(--text-bright);
  font-weight: 800;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.text-gold {
  color: var(--gold);
}

.text-blue {
  color: var(--neon-blue);
}

.text-pink {
  color: var(--neon-pink);
}

.font-mono {
  font-family: var(--font-mono);
}

@media (max-width: 960px) {
  .nav-shell {
    min-height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    flex-basis: 100%;
    display: none;
    margin-left: 0;
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 4px 0 12px;
  }

  .nav-link {
    padding: 12px 16px;
    border-radius: 12px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .section-block {
    padding: 24px 0;
  }

  .container,
  .nav-shell,
  .site-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 20px;
  }

  .scroll-top {
    right: 16px;
    bottom: 16px;
  }
}

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