:root {
  --c-navy: #0A1F44;
  --c-navy-2: #1A3A6B;
  --c-paper: #F5F5F0;
  --c-yellow: #FFD700;
  --c-neon: #39FF14;
  --c-ink: #1A1A1A;
  --c-white: #FFFFFF;
  --c-mute: #D0D0C8;
  --c-danger: #E74C3C;
  --font-display: "Oswald", "Arial Narrow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Roboto", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --container-max: 1200px;
}

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

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

body {
  margin: 0;
  background: var(--c-paper);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  min-height: 100vh;
}

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

a {
  color: inherit;
}

ul, ol {
  margin: 0;
  padding: 0;
}

li {
  list-style: none;
}

::selection {
  background: var(--c-yellow);
  color: var(--c-navy);
}

:focus-visible {
  outline: 3px solid var(--c-yellow);
  outline-offset: 3px;
}

#main-content {
  display: block;
}

body.no-scroll {
  overflow: hidden;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 1rem;
  z-index: 1200;
  padding: 0.75rem 1.25rem;
  background: var(--c-yellow);
  color: var(--c-navy);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-250%);
  transition: transform 0.2s ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--c-navy) 0%, var(--c-navy-2) 100%);
  color: var(--c-white);
  box-shadow: 0 10px 30px rgba(10, 31, 68, 0.18);
}

.reading-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-yellow), var(--c-neon));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
  z-index: 5;
}

.header-topline {
  background: rgba(6, 17, 38, 0.7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.header-ticker {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.45rem 1rem;
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.4;
}

.header-ticker::-webkit-scrollbar {
  display: none;
}

.ticker-badge {
  flex: 0 0 auto;
  background: var(--c-neon);
  color: var(--c-navy);
  padding: 0.1rem 0.5rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.ticker-item {
  flex: 0 0 auto;
  color: rgba(255, 255, 255, 0.82);
}

.ticker-separator {
  flex: 0 0 auto;
  color: var(--c-yellow);
  opacity: 0.7;
}

.header-maincontainer {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 4.75rem;
  padding: 0.75rem 1rem;
}

.site-brand {
  margin-right: auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 0 0 auto;
  text-decoration: none;
  padding: 0.25rem 0;
}

.site-brand__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.1;
  color: var(--c-yellow);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.site-brand__chapter {
  margin-top: 0.2rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--c-neon);
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
}

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

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav__link {
  display: block;
  padding: 0.6rem 0.65rem;
  border-bottom: 2px solid transparent;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.9375rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.site-nav__link:hover {
  color: var(--c-yellow);
  border-bottom-color: var(--c-yellow);
}

.site-nav__link[aria-current="page"] {
  color: var(--c-yellow);
  border-bottom-color: var(--c-neon);
  background: rgba(255, 255, 255, 0.05);
}

.nav-aside {
  display: none;
}

.page-shell {
  display: block;
  width: min(calc(100% - 2rem), var(--container-max));
  margin-inline: auto;
  padding-top: 2.25rem;
  padding-bottom: 4rem;
}

.container {
  width: min(calc(100% - 2rem), var(--container-max));
  margin-inline: auto;
}

.page-head {
  position: relative;
  width: min(calc(100% - 2rem), var(--container-max));
  margin-inline: auto;
  padding: 2.5rem 0 1.75rem;
  border-bottom: 1px solid var(--c-mute);
}

.page-head::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 22%;
  height: 4px;
  background: linear-gradient(90deg, var(--c-yellow), var(--c-neon));
}

.page-head__kicker {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-navy);
}

.page-head__title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  line-height: 0.95;
  color: var(--c-navy);
  text-transform: uppercase;
  margin: 0.5rem 0 0.75rem;
}

.page-head__intro {
  max-width: 65ch;
  color: rgba(26, 26, 26, 0.72);
  font-size: 1.125rem;
  line-height: 1.75;
}

.breadcrumbs {
  width: min(calc(100% - 2rem), var(--container-max));
  margin-inline: auto;
  padding: 1.25rem 0 0;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
}

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

.breadcrumbs__link {
  color: var(--c-navy);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.breadcrumbs__link:hover {
  color: var(--c-navy);
  border-bottom-color: var(--c-yellow);
}

.section {
  padding: 3.5rem 1rem;
}

.section--compact {
  padding: 2.25rem 1rem;
}

.section--dark {
  position: relative;
  overflow: hidden;
  background: var(--c-navy);
  color: var(--c-white);
}

.section--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(255, 215, 0, 0.08) 0%, transparent 34%),
    radial-gradient(circle at 85% 15%, rgba(57, 255, 20, 0.12), transparent 34%);
  pointer-events: none;
}

.section__header {
  max-width: min(calc(100% - 1rem), var(--container-max));
  margin: 0 auto 2rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.section__kicker {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-yellow);
}

.section__title {
  margin: 0.25rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1;
  color: var(--c-navy);
  text-transform: uppercase;
}

.section--dark .section__title {
  color: var(--c-white);
}

.section__action {
  flex: 0 0 auto;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(0, 0.8fr);
  gap: 2rem;
  align-items: start;
}

.split__aside {
  position: sticky;
  top: 7rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--c-white);
  border: 1px solid var(--c-mute);
  border-top: 4px solid var(--c-navy);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(10, 31, 68, 0.12);
  border-top-color: var(--c-yellow);
}

.card__media {
  border-bottom: 1px solid var(--c-mute);
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
  padding: 1.5rem;
}

.card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--c-navy);
}

.card__desc {
  color: rgba(26, 26, 26, 0.75);
  font-size: 0.9375rem;
}

.card__meta {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--c-mute);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-navy);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.65rem;
  background: var(--c-navy);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.tag--yellow {
  background: var(--c-yellow);
  color: var(--c-navy);
}

.tag--neon {
  background: var(--c-neon);
  color: var(--c-navy);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.6rem;
  background: rgba(57, 255, 20, 0.16);
  color: var(--c-navy);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.status-dot {
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--c-neon);
  border-radius: 50%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.3rem;
  border: 1px solid var(--c-navy);
  background: var(--c-navy);
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  background: var(--c-yellow);
  border-color: var(--c-yellow);
  color: var(--c-navy);
}

.btn--primary {
  background: var(--c-yellow);
  border-color: var(--c-yellow);
  color: var(--c-navy);
}

.btn--primary:hover {
  background: var(--c-navy);
  border-color: var(--c-navy);
  color: var(--c-yellow);
}

.btn--ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--c-white);
}

.btn--ghost:hover {
  background: var(--c-white);
  border-color: var(--c-white);
  color: var(--c-navy);
}

.panel {
  position: relative;
  background: var(--c-white);
  padding: 2rem;
  clip-path: polygon(0 0, calc(100% - 1rem) 0, 100% 1rem, 100% 100%, 1rem 100%, 0 calc(100% - 1rem));
}

.panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3.5rem;
  height: 3px;
  background: var(--c-yellow);
}

.panel--dark {
  background: var(--c-navy);
  color: var(--c-white);
}

.panel--dark::before {
  background: var(--c-neon);
}

.panel--accent {
  background: var(--c-yellow);
  color: var(--c-navy);
}

.panel--accent::before {
  background: var(--c-navy);
}

.table-wrap {
  overflow-x: auto;
  background: var(--c-white);
  border: 1px solid var(--c-mute);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 0.9375rem;
}

.data-table th {
  background: var(--c-navy);
  color: var(--c-white);
  text-align: left;
  padding: 0.75rem 1rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--c-mute);
  white-space: nowrap;
}

.data-table tbody tr:hover {
  background: rgba(255, 215, 0, 0.18);
}

.data-number {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-navy);
}

.metric {
  display: inline-flex;
  flex-direction: column;
  min-width: 8.5rem;
  padding: 1.1rem 1.25rem;
  background: var(--c-navy);
  color: var(--c-white);
  border-left: 4px solid var(--c-neon);
}

.metric__value {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  line-height: 1;
  color: var(--c-yellow);
}

.metric__label {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.66);
}

.media-frame {
  position: relative;
  overflow: hidden;
  background: var(--c-navy-2);
  aspect-ratio: 16 / 9;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 35%, rgba(255, 215, 0, 0.28) 50%, transparent 62%),
    linear-gradient(315deg, transparent 48%, rgba(57, 255, 20, 0.28) 52%, transparent 60%);
  mix-blend-mode: screen;
  pointer-events: none;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide {
  aspect-ratio: 21 / 9;
}

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

.media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.75rem;
  background: rgba(10, 31, 68, 0.8);
  color: var(--c-white);
  font-size: 0.8125rem;
}

.prose {
  max-width: 75ch;
}

.prose p {
  margin: 0 0 1.25rem;
}

.prose h2 {
  margin: 2.25rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.75rem;
  line-height: 1.2;
  color: var(--c-navy);
}

.prose h3 {
  margin: 1.5rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--c-navy);
}

.prose ul,
.prose ol {
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
}

.prose li {
  list-style: disc;
  margin-bottom: 0.35rem;
}

.prose ol li {
  list-style: decimal;
}

.prose a {
  color: var(--c-navy);
  text-decoration-color: var(--c-yellow);
  text-underline-offset: 3px;
}

.prose strong {
  color: var(--c-navy);
}

.site-footer {
  margin-top: 4rem;
  background: var(--c-navy);
  color: var(--c-white);
  border-top: 4px solid var(--c-yellow);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 1fr;
  gap: 2.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1rem 2rem;
}

.footer-card {
  border-left: 1px solid rgba(255, 255, 255, 0.16);
  padding-left: 1.5rem;
}

.footer-brand {
  border-left-width: 4px;
  border-left-color: var(--c-neon);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--c-yellow);
  font-weight: 700;
}

.footer-brand__desc {
  margin-top: 0.85rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.footer-brand__trust {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.2);
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

.footer-title {
  margin: 0 0 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-yellow);
}

.footer-nav__list,
.footer-contact__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.78);
}

.footer-nav__list a {
  display: inline-block;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.footer-nav__list a:hover {
  color: var(--c-yellow);
  border-bottom-color: var(--c-yellow);
}

.footer-contact__list {
  line-height: 1.8;
}

.footer-icp {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.45rem 0.8rem;
  background: rgba(57, 255, 20, 0.06);
  border: 1px solid rgba(57, 255, 20, 0.4);
  color: var(--c-neon);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 960px) {
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    flex: 0 0 auto;
    width: 3rem;
    height: 3rem;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: transparent;
    cursor: pointer;
  }

  .nav-toggle__line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--c-white);
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.25rem);
    left: 1rem;
    right: 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: linear-gradient(160deg, var(--c-navy), var(--c-navy-2));
    border-top: 3px solid var(--c-yellow);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.3);
    max-height: calc(100vh - 5rem);
    overflow-y: auto;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .site-nav__link {
    padding: 0.9rem 0.5rem;
    font-size: 1.0625rem;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(255, 255, 255, 0.07);
  }

  .nav-aside {
    display: block;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.6);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding-top: 2.5rem;
  }

  .footer-card {
    border-left: 0;
    padding-left: 0;
    border-top: 2px solid rgba(255, 255, 255, 0.12);
    padding-top: 1.25rem;
  }

  .footer-brand {
    border-top-color: var(--c-neon);
  }

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

  .split__aside {
    position: static;
  }

  .section__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

@media (max-width: 720px) {
  .header-ticker {
    font-size: 0.75rem;
  }

  .site-brand__name {
    font-size: 1.25rem;
  }

  .site-brand__chapter {
    font-size: 0.625rem;
  }

  .page-shell {
    padding-top: 1.5rem;
  }

  .page-head {
    padding-top: 1.75rem;
  }

  .page-head__title {
    font-size: clamp(2.2rem, 12vw, 3.2rem);
  }

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

  .section {
    padding: 2.5rem 1rem;
  }

  .footer-bottom {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}