:root {
  --bg-primary: #081626;
  --bg-secondary: #0B1E36;
  --bg-highlight: #102A4A;
  --accent: #FF6B00;
  --accent-light: #FF8C42;
  --data-color: #00D4FF;
  --text-primary: #FFFFFF;
  --text-secondary: #C0D6E8;
  --text-muted: #7A95AD;
  --glass: rgba(255,255,255,0.08);
  --font-headline: 'DIN Alternate','Bebas Neue','Noto Sans SC',sans-serif;
  --font-body: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-data: 'Roboto Mono','JetBrains Mono',monospace;
  --fs-hero: clamp(3rem, 8vw, 6rem);
  --fs-h1: clamp(2rem, 4vw, 3rem);
  --fs-h2: clamp(1.5rem, 2.5vw, 2rem);
  --fs-h3: 1.25rem;
  --header-w: 280px;
  --card-radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headline);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }

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

a:hover {
  color: var(--accent-light);
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
}

:focus {
  outline: none;
}

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

.skip-link {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 9999;
  padding: 12px 20px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  border-radius: 8px;
  transform: translateY(-200%);
  transition: transform .25s ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--header-w);
  height: 100vh;
  z-index: 1000;
  background-color: #091928;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 32px 32px;
  border-right: 1px solid rgba(255,255,255,.06);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.site-header::after {
  content: '';
  position: absolute;
  top: 0;
  right: -1px;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent) 0%, var(--data-color) 75%, transparent);
  opacity: .65;
  pointer-events: none;
}

.header-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 32px 24px 28px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-symbol {
  position: relative;
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  background: var(--accent);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .25s ease;
}

.brand-lockup:hover .brand-symbol {
  background: var(--accent-light);
}

.brand-symbol-core {
  font-family: var(--font-headline);
  font-size: 1.375rem;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}

.brand-symbol-dot {
  position: absolute;
  right: 7px;
  bottom: 7px;
  width: 7px;
  height: 7px;
  background: var(--data-color);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0,212,255,.7);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-headline);
  font-size: 1.4375rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  line-height: 1.1;
}

.brand-sub {
  font-size: .6875rem;
  color: var(--text-muted);
  letter-spacing: .18em;
  line-height: 1.4;
  margin-top: 2px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: 8px;
}

.toggle-bar {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease, background .3s ease;
}

.nav-toggle:hover .toggle-bar {
  background: var(--accent);
}

.site-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 40px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  font-size: .9375rem;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color .25s ease, background .25s ease, border-color .25s ease, transform .25s ease;
}

.nav-link::before {
  content: '';
  flex: 0 0 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background .25s ease, box-shadow .25s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,.04);
  border-color: rgba(255,255,255,.1);
  transform: translateX(3px);
}

.nav-link[aria-current="page"] {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(255,107,0,.28);
}

.nav-link[aria-current="page"]::before {
  background: #fff;
  box-shadow: 0 0 0 4px rgba(255,255,255,.15);
}

.nav-link[aria-current="page"]::after {
  content: '//';
  font-family: var(--font-data);
  font-size: .75rem;
  color: rgba(255,255,255,.8);
  margin-left: auto;
}

.nav-link-cta {
  justify-content: center;
  margin-top: auto;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  gap: 8px;
  border: none;
  box-shadow: 0 8px 24px rgba(255,107,0,.3);
  transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
}

.nav-link-cta::before {
  display: none;
}

.nav-link-cta::after {
  display: none;
}

.nav-link-cta:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255,107,0,.4);
}

.site-main {
  margin-left: var(--header-w);
  min-height: 70vh;
}

.site-footer {
  margin-left: var(--header-w);
  background-color: var(--bg-secondary);
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,.018) 0, rgba(255,255,255,.018) 1px, transparent 1px, transparent 12px);
  border-top: 1px solid rgba(255,255,255,.06);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 120px, var(--data-color) 120px, var(--data-color) 200px, transparent 200px);
  opacity: .9;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 56px 56px 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr .7fr .7fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

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

.footer-logo {
  font-family: var(--font-headline);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  line-height: 1.2;
  width: fit-content;
}

.footer-logo span {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 400;
}

.footer-logo:hover {
  color: var(--accent);
}

.footer-desc {
  color: var(--text-muted);
  font-size: .875rem;
  max-width: 260px;
  line-height: 1.7;
}

.footer-col,
.footer-col-nav,
.footer-col-legal,
.footer-col-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-heading {
  font-family: var(--font-data);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.footer-link {
  color: var(--text-secondary);
  font-size: .875rem;
  width: fit-content;
  transition: color .2s ease, transform .2s ease;
}

.footer-link:hover {
  color: var(--accent);
  transform: translateX(2px);
}

.footer-info {
  color: var(--text-secondary);
  font-size: .875rem;
  line-height: 1.6;
}

.footer-note {
  color: var(--text-muted);
  font-size: .8125rem;
  line-height: 1.7;
  margin-top: 8px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 20px 0 0;
  border-top: 1px solid rgba(255,255,255,.06);
  color: var(--text-muted);
}

.footer-copy,
.footer-icp {
  font-size: .8125rem;
  color: var(--text-muted);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 72px 0;
}

.section-kicker {
  font-family: var(--font-data);
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--data-color);
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-headline);
  font-size: var(--fs-h2);
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.card-clip {
  background: var(--bg-secondary);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 4px 16px 4px 16px;
  padding: 24px;
  position: relative;
}

.card-clip::after {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 42px;
  height: 42px;
  border-top: 3px solid var(--accent);
  border-left: 3px solid var(--accent);
  border-top-left-radius: 4px;
  pointer-events: none;
}

.data-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: .8125rem;
  color: var(--data-color);
  background: rgba(0,212,255,.1);
  border: 1px solid rgba(0,212,255,.2);
  padding: 6px 14px;
  border-radius: 999px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: .9375rem;
  font-weight: 700;
  font-family: var(--font-body);
  padding: 12px 28px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(255,107,0,.24);
  transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
}

.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(255,107,0,.35);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--glass);
  color: var(--text-primary);
  font-size: .9375rem;
  font-family: var(--font-body);
  padding: 12px 28px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  transition: background .25s ease, border-color .25s ease;
}

.btn-ghost:hover {
  background: rgba(255,255,255,.14);
  border-color: rgba(255,255,255,.35);
  color: var(--text-primary);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 24px 0 8px;
  font-size: .875rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: color .2s ease;
}

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

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

.breadcrumb li::before {
  content: '/';
  margin-right: 8px;
  color: var(--text-muted);
}

.breadcrumb li:first-child::before {
  content: '';
  margin: 0;
}

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

.frame {
  position: relative;
  overflow: hidden;
  background: var(--bg-highlight);
  border-radius: 4px 16px 4px 16px;
}

.frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,107,0,.12) 0%, transparent 40%);
  pointer-events: none;
}

.frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.frame:hover img {
  transform: scale(1.03);
}

.ratio-16-9 { aspect-ratio: 16 / 9; }
.ratio-4-3 { aspect-ratio: 4 / 3; }
.ratio-3-2 { aspect-ratio: 3 / 2; }
.ratio-1-1 { aspect-ratio: 1 / 1; }

.timeline {
  position: relative;
  padding-left: 28px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--data-color));
}

.timeline-item {
  position: relative;
  margin-bottom: 24px;
  padding: 16px 20px;
  background: var(--bg-secondary);
  border-radius: 2px 12px 2px 12px;
  border: 1px solid rgba(255,255,255,.05);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(255,107,0,.2);
}

.timeline-meta {
  font-family: var(--font-data);
  font-size: .75rem;
  color: var(--data-color);
  margin-bottom: 4px;
}

.deco-line {
  height: 1px;
  border: none;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 48px, rgba(255,255,255,.1) 48%, rgba(255,255,255,.1) 100%);
  margin: 32px 0;
}

.reveal {
  transition: opacity .6s ease, transform .6s ease;
}

html.js-reveal .reveal {
  opacity: 0;
  transform: translateY(24px);
}

html.js-reveal .reveal[data-visible] {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }

@media (max-width: 1023px) {
  .site-header {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,.06);
  }

  .site-header::after {
    top: auto;
    bottom: -1px;
    left: 0;
    right: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--data-color) 60%, transparent);
    opacity: .7;
  }

  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 20px;
  }

  .brand-symbol {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }

  .brand-symbol-core {
    font-size: 1rem;
  }

  .brand-symbol-dot {
    right: 5px;
    bottom: 5px;
    width: 6px;
    height: 6px;
  }

  .brand-name {
    font-size: 1.15rem;
  }

  .brand-sub {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    z-index: 999;
    margin: 0;
    padding: 16px 20px 28px;
    background: rgba(9, 25, 40, .97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,.06);
    flex-direction: column;
    gap: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    pointer-events: none;
    transition: opacity .25s ease, transform .25s ease, visibility .25s;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-link {
    padding: 12px 16px;
    font-size: .9375rem;
  }

  .nav-link-cta {
    margin-top: 14px;
  }

  .site-main {
    margin-left: 0;
  }

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

  .footer-inner {
    padding: 48px 32px 24px;
  }
}

@media (min-width: 601px) and (max-width: 1023px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 600px) {
  .header-inner {
    padding: 0 16px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .site-nav {
    padding-left: 16px;
    padding-right: 16px;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 48px 0;
  }

  .footer-inner {
    padding: 40px 20px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column-reverse;
    align-items: flex-start;
    padding-top: 16px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }

  .nav-toggle .toggle-bar {
    transition: none;
  }

  .frame:hover img {
    transform: none;
  }

  html.js-reveal .reveal {
    opacity: 1;
    transform: none;
  }

  .nav-link,
  .nav-link-cta {
    transition: none;
  }
}