:root {
  --bg-deep: #0B132B;
  --bg-deeper: #060D1F;
  --bg-card: #111C36;
  --accent-orange: #F77F00;
  --accent-blue: #1C77FF;
  --accent-gold: #FFD700;
  --text-light: #F8F9FA;
  --text-muted: #9B9B9B;
  --border-slate: #2A3A5C;
  --alert-red: #FF6B6B;

  --font-display: "Oswald", "Archivo Narrow", "DIN Condensed", "Roboto Condensed", "Arial Narrow", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, "Microsoft YaHei", monospace;

  --text-4xl: 48px;
  --text-3xl: 36px;
  --text-2xl: 28px;
  --text-xl: 20px;
  --text-base: 16px;
  --text-sm: 14px;
  --text-xs: 12px;

  --container: 1180px;
  --content: 720px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  --transition: 0.2s ease;
}

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

[hidden] {
  display: none !important;
}

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-deep);
  background-image:
    linear-gradient(rgba(42, 58, 92, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 58, 92, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-light);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main {
  width: 100%;
  flex: 1;
}

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--text-light);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

:focus-visible {
  outline: 2px solid var(--accent-orange);
  outline-offset: 3px;
}

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

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

.prose {
  max-width: 680px;
  margin-inline: auto;
  line-height: 1.75;
  color: rgba(248, 249, 250, 0.88);
}

.prose p {
  margin-bottom: 24px;
}

.prose a {
  color: var(--accent-blue);
}

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

.prose h2 {
  margin: 48px 0 16px;
}

.text-muted { color: var(--text-muted); }
.text-mono { font-family: var(--font-mono); }
.text-accent { color: var(--accent-orange); }
.text-blue { color: var(--accent-blue); }
.text-gold { color: var(--accent-gold); }

.data {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.data--lg {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent-gold);
}

.data--md {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-light);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--text-light);
  border: 1px solid transparent;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
}

.btn--solid {
  background: var(--accent-orange);
  color: var(--bg-deep);
}

.btn--solid:hover {
  background: var(--accent-gold);
  color: var(--bg-deep);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--accent-blue);
  border-color: rgba(28, 119, 255, 0.45);
}

.btn--ghost:hover {
  background: rgba(28, 119, 255, 0.15);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn:focus-visible {
  outline: none;
  filter: drop-shadow(0 0 0 2px var(--accent-orange));
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb__sep {
  color: var(--border-slate);
}

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

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

.grid {
  display: grid;
  gap: 24px;
}

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

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

.bento {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 20px;
}

.bento__item--large { grid-column: span 7; }
.bento__item--medium { grid-column: span 3; }
.bento__item--small { grid-column: span 2; }

.panel {
  position: relative;
  background: rgba(17, 28, 54, 0.85);
  border: 1px solid var(--border-slate);
  border-left: 3px solid var(--accent-orange);
  padding: 20px;
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--border-slate);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.panel__title::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-blue);
  margin-right: 8px;
  vertical-align: middle;
}

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--border-slate);
}

.tabs__btn {
  padding: 10px 18px;
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-bottom: none;
  margin-bottom: -1px;
  transition: color var(--transition), background-color var(--transition);
}

.tabs__btn:hover {
  color: var(--text-light);
  background: rgba(28, 119, 255, 0.08);
}

.tabs__btn[aria-selected="true"] {
  color: var(--text-light);
  background: var(--bg-card);
  border-color: var(--border-slate);
  position: relative;
}

.tabs__btn[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--accent-orange);
}

.tabs__btn:focus-visible {
  outline: 2px solid var(--accent-orange);
  outline-offset: -2px;
}

.tabs__panel {
  padding: 20px 0;
}

.img-frame {
  position: relative;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border-slate);
}

.img-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame--ratio-16-9 { aspect-ratio: 16 / 9; }
.img-frame--ratio-4-3 { aspect-ratio: 4 / 3; }
.img-frame--ratio-3-4 { aspect-ratio: 3 / 4; }

.img-frame--tilt {
  clip-path: polygon(0 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
}

.img-frame--tilt-both {
  clip-path: polygon(14px 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: 1100;
  padding: 10px 18px;
  border-radius: 3px;
  background: var(--accent-orange);
  color: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  transition: top 0.2s ease;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-gold));
  z-index: 1000;
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg-deep);
  color: var(--text-light);
}

.site-header::after {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-orange) 0%, var(--accent-blue) 60%, rgba(28, 119, 255, 0.05) 100%);
}

.site-header__statusbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 6px 32px;
  background: var(--bg-deeper);
  border-bottom: 1px solid var(--border-slate);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

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

.statusbar__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.statusbar__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
}

.statusbar__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 8px rgba(255, 215, 0, 0.7);
}

.statusbar__delay {
  font-size: 11px;
  color: var(--accent-blue);
}

.site-header__main {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-header__main::before {
  content: "";
  position: absolute;
  top: 0;
  left: 32px;
  width: 64px;
  height: 3px;
  background: var(--accent-orange);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--accent-orange);
  color: var(--bg-deep);
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 800;
  font-size: 20px;
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
}

.brand__text {
  line-height: 1.15;
}

.brand__name {
  display: block;
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.04em;
  color: var(--text-light);
  line-height: 1.1;
}

.brand__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-blue);
  line-height: 1.2;
  margin-top: 2px;
}

.brand:hover .brand__name {
  color: var(--accent-orange);
}

.brand:focus-visible {
  outline: none;
  filter: drop-shadow(0 0 0 2px var(--accent-orange));
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-inline: auto;
}

.main-nav__link {
  position: relative;
  display: block;
  padding: 8px 12px;
  font-family: var(--font-display);
  font-stretch: condensed;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--text-light);
  transition: color var(--transition), background-color var(--transition);
}

.main-nav__link:hover {
  color: var(--accent-orange);
}

.main-nav__link[aria-current="page"] {
  color: var(--bg-deep);
  background: var(--accent-blue);
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}

.main-nav__link[aria-current="page"]:hover {
  color: var(--bg-deep);
  background: var(--accent-gold);
}

.main-nav__link:focus-visible {
  outline: none;
  filter: drop-shadow(0 0 0 2px var(--accent-orange));
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border-slate);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-light);
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: background-color var(--transition), border-color var(--transition);
}

.nav-toggle:hover {
  border-color: var(--accent-orange);
  background: rgba(247, 127, 0, 0.08);
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--accent-orange);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent-orange);
  outline-offset: 3px;
}

.site-footer {
  position: relative;
  margin-top: auto;
  background: var(--bg-deeper);
  color: var(--text-muted);
  font-size: 15px;
}

.site-footer::before {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-blue) 60%, transparent);
}

.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 56px 32px 32px;
  display: grid;
  grid-template-columns: 4fr 2fr 2fr 3fr;
  gap: 40px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__summary {
  margin-top: 16px;
  max-width: 38ch;
  line-height: 1.7;
}

.site-footer__trust {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
}

.site-footer__trust-icon {
  width: 8px;
  height: 8px;
  flex-shrink: 0;
  background: var(--accent-gold);
  transform: rotate(45deg);
}

.footer-nav__title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 16px;
}

.footer-nav__link {
  display: inline-block;
  padding: 4px 0;
  color: var(--text-muted);
  font-size: 15px;
  transition: color var(--transition), transform var(--transition);
}

.footer-nav__link:hover {
  color: var(--accent-orange);
  transform: translateX(3px);
}

.footer-contact__title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 16px;
}

.footer-contact__item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
  line-height: 1.5;
}

.footer-contact__item::before {
  content: "//";
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-blue);
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-light);
  min-width: 3em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.site-footer__bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 32px;
  border-top: 1px solid var(--border-slate);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.site-footer__copy {
  margin: 0;
}

.site-footer__icp {
  margin: 0;
}

.site-footer__icp-link {
  color: var(--text-muted);
  transition: color var(--transition);
}

.site-footer__icp-link:hover {
  color: var(--accent-orange);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal][data-visible] {
  opacity: 1;
  transform: none;
}

@media (max-width: 900px) {
  .grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bento__item--large {
    grid-column: span 12;
  }

  .bento__item--medium,
  .bento__item--small {
    grid-column: span 6;
  }

  .site-header__statusbar {
    padding: 6px 20px;
  }

  .site-header__main {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 20px;
  }

  .site-header__main::before {
    left: 20px;
  }

  .brand {
    margin-right: auto;
  }

  .main-nav {
    display: none;
    flex-basis: 100%;
    order: 4;
    margin: 6px 0 4px;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    border-top: 1px solid var(--border-slate);
    padding-top: 8px;
  }

  .header-actions {
    flex-basis: 100%;
    order: 3;
    display: flex;
    gap: 10px;
    border-top: 1px solid var(--border-slate);
    padding-top: 10px;
  }

  .header-actions .btn {
    flex: 1;
  }

  .site-header[data-open] .main-nav {
    display: flex;
  }

  .main-nav__link {
    padding: 12px 10px;
    border-bottom: 1px solid rgba(42, 58, 92, 0.35);
  }

  .main-nav__link:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 40px 20px 24px;
  }

  .site-footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }

  .bento__item--medium,
  .bento__item--small {
    grid-column: span 12;
  }

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

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .statusbar__delay {
    display: none;
  }

  .btn--sm {
    padding: 8px 10px;
    font-size: 12px;
  }

  .brand__name {
    font-size: 19px;
  }

  .brand__mark {
    width: 36px;
    height: 36px;
    font-size: 17px;
  }
}

@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}