:root {
  --s-bg: #0B1D3A;
  --s-bg-bright: #143A6B;
  --s-accent: #00FF88;
  --s-accent-soft: rgba(0, 255, 136, 0.2);
  --s-accent-grid: rgba(0, 255, 136, 0.2);
  --s-hot: #FF6B35;
  --s-paper: #F2E8D5;
  --s-text: #E2E8F0;
  --s-text-dim: #94A3B8;
  --s-border: #1E40AF;
  --s-shadow: rgba(0, 0, 0, 0.4);
  --s-font-display: Impact, 'Arial Black', 'Noto Sans SC', sans-serif;
  --s-font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --s-font-mono: 'Roboto Mono', 'Consolas', monospace;
  --s-space: 16px;
  --s-radius: 2px;
  --s-header-w: 240px;
  --s-progress: 0;
  --s-topbar-h: 42px;
}

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

html {
  scroll-behavior: smooth;
  background: var(--s-bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--s-bg);
  color: var(--s-text);
  font-family: var(--s-font-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  border-top: 3px solid var(--s-accent);
}

main {
  display: block;
  min-height: 70vh;
}

#main-content {
  outline: none;
}

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

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

button {
  font: inherit;
  cursor: pointer;
}

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

::selection {
  background: var(--s-accent);
  color: var(--s-bg);
}

.s-skip {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 2000;
  padding: 10px 14px;
  background: var(--s-accent);
  color: var(--s-bg);
  font-weight: 700;
  border-radius: 2px;
  transform: translateY(-200%);
  opacity: 0;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.s-skip:focus {
  transform: translateY(0);
  opacity: 1;
}

.s-topbar {
  min-height: var(--s-topbar-h);
  background: var(--s-hot);
  color: var(--s-bg);
  display: flex;
  align-items: stretch;
}

.s-topbar__link {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  width: 100%;
  padding: 6px 16px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: background 0.18s ease, color 0.18s ease;
  text-align: center;
}

.s-topbar__link:hover {
  background: #ff7a4d;
  color: var(--s-bg);
}

.s-topbar__sign {
  background: var(--s-bg);
  color: var(--s-accent);
  font-family: var(--s-font-mono);
  font-size: 11px;
  padding: 2px 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 2px;
}

.s-topbar__text {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: rgba(11, 29, 58, 0.5);
}

.s-header {
  position: relative;
  background: var(--s-bg);
  border-right: 1px solid var(--s-border);
}

.s-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px;
  min-height: 64px;
}

.s-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.s-brand__emblem {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--s-accent);
  color: var(--s-bg);
  font-family: var(--s-font-display);
  font-size: 22px;
  font-weight: 900;
  transform: skewX(-6deg);
}

.s-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.s-brand__name {
  font-family: var(--s-font-display);
  font-size: 22px;
  letter-spacing: 0.04em;
  transform: skewX(-3deg);
  color: var(--s-paper);
}

.s-brand__slogan {
  font-size: 11px;
  color: var(--s-text-dim);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.s-nav-toggle {
  display: none;
  position: relative;
  padding: 6px 8px;
  background: transparent;
  border: 1px solid var(--s-border);
  border-radius: 2px;
  min-width: 44px;
  min-height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.s-nav-toggle__line {
  width: 22px;
  height: 2px;
  background: var(--s-accent);
  display: block;
}

.s-nav-toggle__label {
  font-size: 10px;
  color: var(--s-text-dim);
  letter-spacing: 0.12em;
}

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

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

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

.s-nav {
  background: var(--s-bg);
}

.s-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.s-nav__item {
  border-left: 3px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease;
}

.s-nav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--s-text);
  font-size: 14.5px;
  font-weight: 600;
  min-height: 44px;
}

.s-nav__num {
  font-family: var(--s-font-mono);
  font-size: 11px;
  color: var(--s-text-dim);
  min-width: 22px;
}

.s-nav__label {
  transform: skewX(-2deg);
}

.s-nav__item:hover {
  background: rgba(0, 255, 136, 0.08);
  border-left-color: var(--s-accent);
}

.s-nav__item:hover .s-nav__num {
  color: var(--s-accent);
}

.s-nav__link[aria-current="page"] {
  background: var(--s-accent-soft);
  border-left-color: var(--s-accent);
  color: var(--s-accent);
}

.s-nav__link[aria-current="page"] .s-nav__num {
  color: var(--s-accent);
}

.s-clock {
  font-family: var(--s-font-mono);
  font-size: 12px;
  color: var(--s-text-dim);
  white-space: nowrap;
  padding: 6px 10px;
  border: 1px solid var(--s-border);
  border-radius: 2px;
  background: rgba(20, 58, 107, 0.4);
  letter-spacing: 0.08em;
}

.s-header::after {
  content: '';
  display: block;
  height: 2px;
  background: var(--s-accent);
  transform-origin: 0 50%;
  transform: scaleX(var(--s-progress, 0));
}

.s-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  padding: 10px 18px;
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  background: transparent;
  color: var(--s-text);
  border-radius: 2px;
  transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
  transform: skewX(-2deg);
}

.s-btn:hover {
  background: var(--s-accent-soft);
  border-color: var(--s-accent);
}

.s-btn:active {
  transform: skewX(-2deg) translateY(1px);
}

.s-btn--primary {
  background: var(--s-accent);
  color: var(--s-bg);
  border-color: var(--s-accent);
}

.s-btn--primary:hover {
  background: #66ffb3;
  box-shadow: 0 0 16px rgba(0, 255, 136, 0.25);
}

.s-btn--ghost {
  border-color: var(--s-border);
}

.s-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--s-text-dim);
  padding: 12px 24px;
  border-bottom: 1px solid var(--s-border);
  margin: 0;
}

.s-breadcrumb a {
  color: var(--s-text-dim);
  padding: 4px 0;
}

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

.s-breadcrumb__sep {
  color: var(--s-accent);
}

.s-section {
  padding: 40px var(--s-space);
  position: relative;
}

.s-section-head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--s-border);
  padding-bottom: 12px;
}

.s-eyebrow {
  font-family: var(--s-font-mono);
  font-size: 12px;
  text-transform: uppercase;
  color: var(--s-accent);
  letter-spacing: 0.18em;
}

.s-index {
  font-family: var(--s-font-mono);
  font-size: 14px;
  color: var(--s-text-dim);
}

.s-title {
  font-family: var(--s-font-display);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  line-height: 1.05;
  color: var(--s-paper);
  margin: 0;
  transform: skewX(-2deg);
  letter-spacing: 0.01em;
}

.s-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin: 24px 0;
}

.s-card {
  background: var(--s-paper);
  color: var(--s-bg);
  border-radius: 2px;
  padding: 18px;
  box-shadow: 0 10px 22px var(--s-shadow);
  border: 1px solid transparent;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.s-card:hover {
  background: #fff8e8;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px var(--s-shadow);
}

.s-card__title {
  font-family: var(--s-font-display);
  font-size: 1.3rem;
  margin: 0 0 8px;
}

.s-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12px;
  color: #6b5e4b;
  margin-bottom: 10px;
}

.s-card p {
  margin: 0;
  line-height: 1.65;
}

.s-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 255, 136, 0.12);
  color: var(--s-accent);
  font-size: 12px;
  font-weight: 700;
  border-radius: 2px;
  padding: 3px 8px;
  border: 1px solid rgba(0, 255, 136, 0.3);
}

.s-chip--hot {
  background: rgba(255, 107, 53, 0.15);
  border-color: rgba(255, 107, 53, 0.4);
  color: var(--s-hot);
}

.s-stat-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--s-font-mono);
  font-size: 14px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--s-border);
}

.s-stat-row b {
  font-size: 18px;
  color: var(--s-accent);
}

.s-prose {
  background: var(--s-paper);
  color: var(--s-bg);
  padding: 22px 22px 28px;
  max-width: 780px;
  border-left: 4px solid var(--s-accent);
  box-shadow: 0 12px 26px var(--s-shadow);
  margin: 24px 0;
}

.s-prose h1,
.s-prose h2,
.s-prose h3 {
  font-family: var(--s-font-display);
  transform: skewX(-2deg);
  line-height: 1.15;
  margin-top: 1.4em;
}

.s-prose p {
  max-width: 45ch;
}

.s-prose a {
  color: var(--s-hot);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.s-prose ul,
.s-prose ol {
  max-width: 60ch;
}

.s-figure {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--s-bg-bright), var(--s-bg));
  border: 1px solid var(--s-border);
  display: grid;
  place-items: center;
  min-height: 120px;
}

.s-figure::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, transparent 0 12px, var(--s-accent-grid) 12px 14px);
  opacity: 0.45;
  pointer-events: none;
}

.s-figure[data-ratio="16-9"] {
  aspect-ratio: 16 / 9;
}

.s-figure[data-ratio="4-3"] {
  aspect-ratio: 4 / 3;
}

.s-figure img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.s-data-strip {
  display: flex;
  align-items: center;
  gap: 16px;
  overflow-x: auto;
  border-left: 4px solid var(--s-accent);
  background: linear-gradient(90deg, var(--s-bg-bright), transparent);
  padding: 12px 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--s-accent) var(--s-bg-bright);
}

.s-data-strip span {
  font-family: var(--s-font-mono);
  font-size: 13px;
  color: var(--s-text);
  white-space: nowrap;
}

.s-data-strip span::before {
  content: '●';
  color: var(--s-accent);
  margin-right: 6px;
  font-size: 10px;
}

.s-fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--s-accent);
  color: var(--s-bg);
  border: none;
  font-size: 20px;
  box-shadow: 0 8px 20px var(--s-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
  z-index: 1000;
}

.s-fab.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.s-fab:hover {
  background: #66ffb3;
}

.s-footer {
  background: linear-gradient(180deg, var(--s-bg), #081427);
  color: var(--s-text);
  border-top: 2px solid var(--s-border);
  padding: 40px 16px 18px;
}

.s-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 1120px;
  margin: 0 auto;
}

.s-footer__about,
.s-footer__nav,
.s-footer__contact,
.s-footer__legal {
  min-width: 0;
}

.s-footer__brand {
  font-family: var(--s-font-display);
  font-size: 28px;
  color: var(--s-accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transform: skewX(-3deg);
  margin-bottom: 8px;
}

.s-footer__brand::before {
  content: '';
  width: 34px;
  height: 8px;
  background: var(--s-hot);
}

.s-footer__desc {
  max-width: 38ch;
  color: var(--s-text-dim);
  font-size: 14px;
  margin: 8px 0 12px;
}

.s-footer__trust {
  font-size: 12.5px;
  color: var(--s-text-dim);
  border-left: 3px solid var(--s-hot);
  padding-left: 10px;
  margin: 12px 0 0;
}

.s-footer__title {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--s-accent);
  margin: 0 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--s-border);
  font-weight: 700;
}

.s-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.s-footer__links li + li {
  margin-top: 6px;
}

.s-footer__links a {
  display: inline-block;
  padding: 4px 0;
  color: var(--s-text);
  font-size: 14px;
  transition: color 0.16s ease, transform 0.16s ease;
}

.s-footer__links a:hover {
  color: var(--s-accent);
  transform: translateX(4px);
}

.s-footer__links--row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.s-footer__links--row li {
  margin: 0;
}

.s-footer__links--row a {
  padding: 6px 10px;
  border: 1px solid var(--s-border);
  border-radius: 2px;
  transform: none;
}

.s-footer__links--row a:hover {
  border-color: var(--s-accent);
  color: var(--s-accent);
  background: rgba(0, 255, 136, 0.06);
}

.s-footer__address {
  font-style: normal;
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
}

.s-footer__address a,
.s-footer__address span {
  font-size: 13.5px;
  color: var(--s-text-dim);
}

.s-footer__address a {
  font-family: var(--s-font-mono);
  color: var(--s-text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.s-footer__address a::before {
  content: '>';
  color: var(--s-accent);
}

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

.s-footer__cta {
  margin-top: 4px;
}

.s-footer__legal {
  border-left: 2px solid var(--s-border);
  padding-left: 16px;
}

.s-footer__meta {
  color: var(--s-text-dim);
  font-size: 12.5px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 18px;
}

.s-footer__stripe {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 36px;
  padding-top: 16px;
  border-top: 1px solid var(--s-border);
}

.s-footer__stripe span {
  width: 16px;
  height: 4px;
  background: var(--s-border);
  transform: skewX(-20deg);
}

.s-footer__stripe span:nth-child(2) {
  background: var(--s-accent);
}

.s-footer__stripe span:nth-child(4) {
  background: var(--s-hot);
}

.s-footer__stripe span:nth-child(6) {
  background: var(--s-paper);
}

@media (min-width: 600px) {
  body {
    font-size: 16px;
  }

  .s-section {
    padding: 48px 28px;
  }

  .s-footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .s-footer__meta {
    flex-direction: row;
    justify-content: space-between;
  }
}

@media (min-width: 960px) {
  body {
    border-top-width: 4px;
  }

  .s-header {
    position: fixed;
    top: var(--s-topbar-h);
    left: 0;
    bottom: 0;
    width: var(--s-header-w);
    display: flex;
    flex-direction: column;
    z-index: 100;
  }

  .s-header__inner {
    flex: 1;
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 18px 14px;
    gap: 22px;
  }

  .s-brand {
    padding: 8px 4px 18px;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--s-border);
  }

  .s-nav-toggle {
    display: none;
  }

  .s-nav__list {
    display: grid;
    gap: 4px;
  }

  .s-nav__link {
    padding: 12px 14px;
    font-size: 15px;
  }

  .s-clock {
    margin-top: auto;
    text-align: center;
    width: 100%;
  }

  .s-header::after {
    display: none;
  }

  .s-main {
    margin-left: var(--s-header-w);
    margin-top: var(--s-topbar-h);
  }
}

@media (max-width: 959px) {
  .s-nav-toggle {
    display: inline-flex;
  }

  .s-nav {
    position: fixed;
    top: var(--s-topbar-h);
    left: 0;
    bottom: 0;
    z-index: 140;
    width: min(320px, 86vw);
    border-right: 1px solid var(--s-border);
    display: flex;
    flex-direction: column;
    transform: translateX(-105%);
    transition: transform 0.22s ease;
    box-shadow: 8px 0 24px var(--s-shadow);
  }

  .s-nav[data-open] {
    transform: translateX(0);
  }

  .s-nav__list {
    padding: 14px 6px;
  }

  .s-clock {
    display: none;
  }

  .s-topbar__link {
    justify-content: flex-start;
    text-align: left;
  }
}

@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;
    scroll-behavior: auto !important;
  }
}

@media print {
  .s-header,
  .s-topbar,
  .s-fab,
  .s-footer__stripe,
  .s-nav-toggle {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .s-main {
    margin: 0;
  }

  .s-prose,
  .s-card {
    background: white;
    color: black;
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .s-footer {
    background: white;
    color: black;
  }
}