:root {
  --header-h: 72px;
  --primary: #0A1F44;
  --primary-deep: #061230;
  --accent-green: #39FF14;
  --accent-orange: #FF6A00;
  --neutral: #131C2E;
  --text: #FFFFFF;
  --text-dim: #A0AEC0;
  --surface: rgba(255,255,255,0.05);
  --line: rgba(255,255,255,0.12);
  --font-display: "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Courier New", "PingFang SC", monospace;
  --font-mono: "Roboto Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding-top: var(--header-h);
  background-color: var(--neutral);
  background-image:
    linear-gradient(rgba(57,255,20,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
}

a {
  color: var(--accent-green);
}

[hidden] {
  display: none !important;
}

::selection {
  background: var(--accent-orange);
  color: var(--primary-deep);
}

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

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 500;
  padding: 12px 18px;
  background: var(--accent-orange);
  color: var(--primary-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  font-weight: 700;
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  min-height: var(--header-h);
  background: linear-gradient(180deg, rgba(6,18,48,0.88) 0%, rgba(10,31,68,0.68) 100%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(6,18,48,0.97);
  border-bottom-color: rgba(255,106,0,0.55);
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}

.header-shell {
  width: min(1280px, calc(100% - 36px));
  min-height: var(--header-h);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  color: var(--text);
  text-decoration: none;
}

.brand-stamp {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--primary);
  border: 1px solid var(--accent-green);
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  transform: skewX(-8deg);
  box-shadow: 4px 4px 0 var(--accent-orange);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-copy strong {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 18px;
  letter-spacing: 0.5px;
  color: var(--text);
}

.brand-copy small {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--accent-green);
}

.main-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-list {
  order: 0;
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 8px 10px;
  color: rgba(255,255,255,0.86);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  background: var(--accent-green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav-list a:hover,
.nav-list a:focus-visible,
.nav-list a[aria-current="page"] {
  color: var(--accent-green);
}

.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.quick-search {
  position: relative;
  display: flex;
  align-items: center;
  width: 224px;
  order: 1;
}

.quick-search-glyph {
  position: absolute;
  left: 0;
  top: 0;
  width: 14px;
  height: 14px;
  pointer-events: none;
}

.quick-search-glyph::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 9px;
  height: 9px;
  border: 1px solid var(--text-dim);
  border-radius: 50%;
}

.quick-search-glyph::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  width: 6px;
  height: 1px;
  background: var(--text-dim);
  transform: rotate(45deg);
}

.quick-search-input {
  width: 100%;
  height: 38px;
  padding: 8px 10px 8px 30px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.quick-search-input::placeholder {
  color: rgba(160,174,192,0.7);
}

.quick-search-input:focus {
  outline: none;
  border-color: var(--accent-green);
  background: rgba(57,255,20,0.04);
}

.nav-download {
  order: 2;
  margin-left: 4px;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  margin-left: auto;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--line);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  border-color: var(--accent-orange);
  background: rgba(255,106,0,0.08);
}

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

.nav-toggle-box span {
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s ease, top 0.25s ease, opacity 0.25s ease;
}

.nav-toggle-box span:nth-child(1) {
  top: 0;
}

.nav-toggle-box span:nth-child(2) {
  top: 6px;
}

.nav-toggle-box span:nth-child(3) {
  top: 12px;
}

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

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

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

.header-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-orange));
  z-index: 210;
  pointer-events: none;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid transparent;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  letter-spacing: 0.03em;
  text-decoration: none;
  cursor: pointer;
  background: transparent;
  color: var(--text);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent-orange);
  color: var(--primary-deep);
  border-color: var(--accent-orange);
}

.btn-primary:hover {
  background: #ff7a24;
  border-color: #ff7a24;
  color: var(--primary-deep);
}

.btn-ghost {
  background: rgba(255,255,255,0.04);
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange);
}

.btn-sm {
  padding: 8px 14px;
  font-size: 12px;
}

.container {
  width: min(1280px, calc(100% - 36px));
  margin-inline: auto;
}

.section {
  padding: clamp(64px, 10vw, 108px) 0;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 36px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  text-transform: uppercase;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-orange);
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 0.98;
  letter-spacing: -0.5px;
  color: var(--text);
  text-transform: uppercase;
}

.section-title::before {
  content: "// ";
  color: var(--accent-orange);
}

.section-sub {
  margin: 8px 0 0;
  max-width: 62ch;
  color: var(--text-dim);
  font-size: 14px;
}

.lead {
  max-width: 64ch;
  color: var(--text-dim);
  font-size: 16px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

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

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

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-dim);
  opacity: 0.6;
}

.page-hero {
  position: relative;
  padding: clamp(40px, 8vw, 80px) 0 24px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line);
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: 96px;
  background: var(--accent-orange);
}

.page-hero .breadcrumb {
  margin-bottom: 12px;
}

.page-title {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(36px, 7vw, 72px);
  line-height: 0.95;
  color: var(--text);
}

.page-sub {
  max-width: 64ch;
  margin: 16px 0 0;
  color: var(--text-dim);
}

.grid {
  display: grid;
  gap: 22px;
}

.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));
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 24px;
}

.card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent-green);
  opacity: 0.7;
}

.card[data-index] {
  padding-top: 34px;
}

.card[data-index]::after {
  content: attr(data-index);
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 3px 7px;
  background: var(--accent-orange);
  color: var(--primary-deep);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
}

.card-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  line-height: 1.1;
}

.card-text {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
}

.index-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: rgba(57,255,20,0.08);
  border: 1px solid rgba(57,255,20,0.35);
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  background: rgba(255,106,0,0.1);
  border: 1px solid rgba(255,106,0,0.35);
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 11px;
}

.img-ratio {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--primary);
}

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

.img-ratio::after {
  content: "IMG//DATA";
  position: absolute;
  left: 10px;
  top: 10px;
  padding: 4px 6px;
  background: rgba(6,18,48,0.8);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 10px;
}

.filterable-list {
  display: grid;
  gap: 12px;
}

.filterable-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.site-footer {
  background: var(--primary-deep);
  color: var(--text);
  border-top: 2px solid var(--accent-orange);
  position: relative;
}

.footer-grid {
  width: min(1280px, calc(100% - 36px));
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(230px, 1.4fr) 0.8fr 0.8fr 1.1fr;
  gap: 28px;
  padding: 56px 0 40px;
}

.footer-claim {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-brand {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 22px;
  letter-spacing: 0.02em;
}

.footer-trust {
  max-width: 48ch;
  margin: 0;
  padding: 12px 14px;
  background: rgba(255,255,255,0.04);
  border-left: 2px solid var(--accent-green);
  color: var(--text-dim);
  font-size: 12px;
}

.footer-title {
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  color: var(--accent-orange);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-grid a {
  color: rgba(255,255,255,0.78);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
}

.footer-grid a:hover,
.footer-grid a:focus-visible {
  color: var(--accent-green);
}

.footer-contact p {
  margin: 0 0 8px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
}

.footer-addr {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(255,255,255,0.12);
}

.footer-note {
  margin-top: 12px;
  padding-left: 8px;
  border-left: 2px solid var(--accent-orange);
  color: rgba(160,174,192,0.8);
  font-size: 11px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 0;
}

.footer-bottom-inner {
  width: min(1280px, calc(100% - 36px));
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
}

.footer-bottom-inner p {
  margin: 0;
}

.footer-meta {
  color: var(--accent-green);
}

.js-runtime [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--reveal-delay, 0ms);
}

.js-runtime [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

.js-runtime [data-reveal="right"] {
  transform: translateX(24px);
}

.js-runtime [data-reveal="left"] {
  transform: translateX(-24px);
}

.js-runtime [data-reveal="scale"] {
  transform: scale(0.96);
}

@media (max-width: 1000px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 190;
    margin-left: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 18px 20px 24px;
    background: rgba(6,18,48,0.98);
    border-bottom: 3px solid var(--accent-orange);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

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

  .nav-list {
    order: 1;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-list a {
    min-height: 46px;
    padding: 0 10px;
    border-left: 2px solid transparent;
  }

  .nav-list a::after {
    display: none;
  }

  .nav-list a:hover,
  .nav-list a[aria-current="page"] {
    border-left-color: var(--accent-green);
  }

  .quick-search {
    order: 0;
    width: 100%;
    margin-bottom: 6px;
  }

  .nav-download {
    order: 2;
    width: 100%;
    margin: 8px 0 0;
  }

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

  .header-shell {
    width: calc(100% - 28px);
  }

  .site-header.is-nav-open {
    background: var(--primary-deep);
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-claim {
    grid-column: 1 / -1;
  }
}

@media (max-width: 600px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .filterable-row {
    grid-template-columns: 1fr;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@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;
    transition-delay: 0ms !important;
  }

  .js-runtime [data-reveal],
  .js-runtime [data-reveal].is-revealed {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}