:root {
  --c-bg: #0A192F;
  --c-bg-panel: #112240;
  --c-bg-soft: #F5F7FA;
  --c-text: #F0F6FC;
  --c-muted: #8892B0;
  --c-line: #233554;
  --c-accent: #39FF14;
  --c-warn: #FF6C00;
  --c-violet: #B537F2;
  --font-head: "Inter Tight", "Noto Sans SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
  --font-number: "JetBrains Mono", "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;
  --body-size: 1rem;
  --line-height: 1.6;
  --header-height: 76px;
  --radius: 8px;
  --cut: 8px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.25);
  --header-bg: rgba(7, 17, 32, 0.88);
}

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

html {
  scroll-behavior: smooth;
  min-height: 100%;
}

@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;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--c-bg);
  background-image:
    linear-gradient(rgba(35, 53, 84, 0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35, 53, 84, 0.16) 1px, transparent 1px),
    radial-gradient(circle at 82% 4%, rgba(57, 255, 20, 0.08), transparent 30rem),
    radial-gradient(circle at 10% 90%, rgba(181, 55, 242, 0.06), transparent 26rem);
  background-size: 72px 72px, 72px 72px, auto, auto;
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--body-size);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding-left: 0;
}

ul[class],
ol[class] {
  list-style: none;
}

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

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

button {
  font-family: inherit;
  border: 0;
  cursor: pointer;
}

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

::selection {
  background: var(--c-accent);
  color: #001;
}

#main-content {
  outline: none;
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #071120;
}

::-webkit-scrollbar-thumb {
  background: #233554;
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: #39FF14;
}

.container {
  width: min(100% - 2rem, 1440px);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--c-accent);
  color: #001;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0 0 calc(100% - 120px) 0;
  background: linear-gradient(180deg, rgba(10, 25, 47, 0.5), transparent);
  pointer-events: none;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

html[data-scrolled] .site-header {
  background: var(--header-bg);
  border-bottom-color: var(--c-line);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

html[data-scrolled] .site-header::before {
  opacity: 0;
}

.reading-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 2;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--c-accent), var(--c-violet));
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.35);
  transition: width 0.12s linear;
}

.header__inner {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  height: var(--header-height);
  margin-inline: auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.15rem;
  flex: 0 0 auto;
  min-width: 0;
}

.brand__logo {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.45rem;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-text);
  white-space: nowrap;
}

.brand__logo::first-letter {
  color: var(--c-accent);
}

.brand__sub {
  font-family: var(--font-head);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
  white-space: nowrap;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.nav__link {
  position: relative;
  display: inline-block;
  padding: 0.55rem 0.85rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-text);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

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

.nav__link:hover::after,
.nav__link:focus-visible::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__link[aria-current="page"] {
  color: var(--c-accent);
  background: rgba(57, 255, 20, 0.05);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
}

.layout-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  background: rgba(57, 255, 20, 0.05);
  border: 1px solid rgba(57, 255, 20, 0.45);
  border-radius: var(--radius);
  color: var(--c-accent);
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.layout-switch:hover {
  background: rgba(57, 255, 20, 0.12);
  box-shadow: 0 0 22px rgba(57, 255, 20, 0.2);
}

.layout-switch[aria-pressed="true"] {
  background: var(--c-warn);
  border-color: var(--c-warn);
  color: #001;
  box-shadow: 0 0 22px rgba(255, 108, 0, 0.32);
}

.layout-switch[aria-pressed="true"]:hover {
  background: #ff7f27;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.8rem;
  background: transparent;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-text);
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--c-accent);
  color: var(--c-accent);
  background: rgba(57, 255, 20, 0.06);
}

.nav-toggle__box {
  display: block;
  position: relative;
  width: 18px;
  height: 14px;
}

.nav-toggle__box::before,
.nav-toggle__box::after,
.nav-toggle__box span {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease, top 0.2s ease;
}

.nav-toggle__box::before {
  top: 0;
}

.nav-toggle__box span {
  top: 6px;
}

.nav-toggle__box::after {
  top: 12px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box::before {
  top: 6px;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box span {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box::after {
  top: 6px;
  transform: rotate(-45deg);
}

.nav-toggle__label {
  font-size: 0.76rem;
}

.site-footer {
  position: relative;
  margin-top: 5rem;
  background: #071120;
  border-top: 1px solid var(--c-line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-accent) 0%, transparent 38%, var(--c-warn) 68%, var(--c-violet) 100%);
  opacity: 0.9;
}

.footer__inner {
  max-width: 1440px;
  margin-inline: auto;
  padding: 3.5rem 2rem 1.75rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.35fr;
  gap: 2.5rem 3rem;
  align-items: start;
}

.footer__brand {
  max-width: 34rem;
}

.footer__logo {
  font-family: var(--font-head);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.footer__tagline {
  margin-top: 0.35rem;
  color: var(--c-accent);
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.footer__trust {
  margin-top: 1rem;
  max-width: 30rem;
  color: var(--c-muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

.footer__heading {
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-text);
  margin-bottom: 1.1rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid rgba(35, 53, 84, 0.75);
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.15rem 1rem;
}

.footer__links a,
.footer__legal a {
  display: inline-block;
  padding: 0.3rem 0;
  color: var(--c-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer__links a:hover,
.footer__legal a:hover {
  color: var(--c-accent);
  padding-left: 0.2rem;
}

.contact-list {
  display: grid;
  gap: 0.55rem;
  color: var(--c-muted);
  font-size: 0.85rem;
  line-height: 1.5;
}

.contact-list__item {
  display: grid;
  grid-template-columns: 2.4em 1fr;
  gap: 0.4rem;
}

.contact-list__label {
  color: var(--c-accent);
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.footer__note {
  margin-top: 1rem;
  color: var(--c-muted);
  font-size: 0.78rem;
  max-width: 22rem;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem 1.25rem;
  margin-top: 2.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--c-line);
  color: var(--c-muted);
  font-size: 0.76rem;
}

.footer__icp {
  color: var(--c-warn);
  font-family: var(--font-number);
  letter-spacing: 0.04em;
}

.footer__legal {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer__legal span {
  color: var(--c-line);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  color: var(--c-muted);
  font-size: 0.8rem;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--c-line);
}

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

.section {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.section__header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  margin-bottom: 2.25rem;
}

.section__index {
  font-family: var(--font-number);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 700;
  line-height: 0.85;
  color: var(--c-accent);
  letter-spacing: -0.06em;
}

.section__heading {
  font-family: var(--font-head);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-text);
}

.section__lead {
  max-width: 38rem;
  margin-top: 0.75rem;
  color: var(--c-muted);
  font-size: 1rem;
}

.grid {
  display: grid;
  gap: 1.25rem;
}

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

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

.card,
.panel {
  background: var(--c-bg-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.card {
  padding: 1.5rem;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.5);
  box-shadow: var(--shadow);
}

.panel {
  padding: 1.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  padding: 1.25rem;
  border-left: 2px solid var(--c-accent);
}

.stat__value {
  font-family: var(--font-number);
  font-size: clamp(2.25rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--c-accent);
  font-variant-numeric: tabular-nums;
}

.stat__label {
  margin-top: 0.5rem;
  color: var(--c-muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.28rem 0.65rem;
  border: 1px solid rgba(57, 255, 20, 0.4);
  border-radius: 999px;
  background: rgba(57, 255, 20, 0.05);
  color: var(--c-accent);
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tag--warn {
  border-color: rgba(255, 108, 0, 0.45);
  background: rgba(255, 108, 0, 0.07);
  color: var(--c-warn);
}

.table-wrap {
  overflow-x: auto;
  background: var(--c-bg-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  color: var(--c-text);
  font-size: 0.88rem;
}

.data-table th,
.data-table td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
  white-space: nowrap;
}

.data-table th {
  font-family: var(--font-head);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-accent);
  background: rgba(57, 255, 20, 0.03);
}

.data-table th[data-sort] {
  cursor: pointer;
}

.data-table th[data-sort]:hover {
  color: var(--c-warn);
}

.data-table tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover td {
  background: rgba(57, 255, 20, 0.04);
}

.data-table .num {
  font-family: var(--font-number);
  font-variant-numeric: tabular-nums;
  color: var(--c-accent);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--c-bg-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  color: var(--c-text);
  font-family: var(--font-head);
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  box-shadow: 0 0 22px rgba(57, 255, 20, 0.14);
}

.button--primary {
  background: var(--c-accent);
  border-color: transparent;
  color: #001;
}

.button--primary:hover {
  background: var(--c-accent);
  color: #001;
  box-shadow: 0 0 28px rgba(57, 255, 20, 0.3);
}

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

html[data-layout="legacy"] {
  --c-accent: #FF6C00;
  --c-warn: #39FF14;
  --radius: 2px;
}

html[data-layout="legacy"] .layout-switch {
  background: rgba(255, 108, 0, 0.07);
  border-color: rgba(255, 108, 0, 0.55);
  color: #FF6C00;
}

html[data-layout="legacy"] .layout-switch:hover {
  background: rgba(255, 108, 0, 0.14);
  box-shadow: 0 0 22px rgba(255, 108, 0, 0.22);
}

html[data-layout="legacy"] .layout-switch[aria-pressed="true"] {
  background: #39FF14;
  border-color: #39FF14;
  color: #001;
  box-shadow: 0 0 22px rgba(57, 255, 20, 0.3);
}

html[data-layout="legacy"] .grid--3 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

html[data-layout="legacy"] .stats-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer__grid {
    grid-template-columns: 1.25fr 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 880px) {
  .header__inner {
    padding: 0 1.25rem;
  }

  .nav {
    position: fixed;
    top: calc(var(--header-height) + 0.5rem);
    right: 1rem;
    left: 1rem;
    z-index: 90;
    padding: 0.75rem;
    background: rgba(7, 17, 32, 0.98);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  }

  .nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.2rem;
  }

  .nav__link {
    display: block;
    padding: 0.8rem 0.9rem;
    border-bottom: 1px solid rgba(35, 53, 84, 0.65);
    white-space: normal;
  }

  .nav__link::after {
    display: none;
  }

  .nav__link[aria-current="page"] {
    background: rgba(57, 255, 20, 0.08);
  }

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

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

@media (max-width: 640px) {
  :root {
    --header-height: 68px;
  }

  .header__inner {
    padding: 0 1rem;
  }

  .brand__sub {
    display: none;
  }

  .layout-switch {
    padding: 0.5rem 0.65rem;
    font-size: 0.7rem;
  }

  .footer__inner {
    padding: 2.25rem 1rem 1.25rem;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    margin-top: 2rem;
  }

  .grid--2,
  .grid--3,
  html[data-layout="legacy"] .grid--3 {
    grid-template-columns: 1fr;
  }

  .stats-grid,
  html[data-layout="legacy"] .stats-grid {
    grid-template-columns: 1fr;
  }

  .section__header {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .section__index {
    font-size: 2.2rem;
  }
}