:root {
  --color-space-ink: #07101F;
  --color-warm-paper: #F5EFE3;
  --color-active-orange: #FF5A2E;
  --color-signal-green: #C3F53E;
  --color-link-blue: #1D5BC8;
  --color-gray-blue: #8391A5;
  --color-line-muted: #D9D2C6;
  --color-legacy-red: #C62B2E;
  --color-deep-slate: #1A2537;
  --color-sand: #E7DFCF;
  --color-focus: #FFB45E;
  --font-display: "Barlow Condensed", Impact, "Arial Narrow", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --header-height: 72px;
  --container-max: 1440px;
  --duration: 180ms;
  --ease: cubic-bezier(0.2, 0.8, 0.4, 1);
  --shadow-soft: 0 4px 16px rgba(7, 16, 31, 0.06);
  --shadow-lift: 0 8px 20px rgba(7, 16, 31, 0.12);
}

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

html {
  background: var(--color-space-ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-warm-paper);
  color: var(--color-space-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, ol, dl, dd {
  margin: 0;
}

ul[class], ol[class] {
  list-style: none;
  padding: 0;
}

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

a {
  color: var(--color-link-blue);
  text-underline-offset: 2px;
}

a:hover {
  color: #144599;
}

button {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1002;
  display: inline-flex;
  padding: 12px 20px;
  background: var(--color-signal-green);
  color: var(--color-space-ink);
  font-weight: 700;
  text-decoration: none;
  border-radius: 2px;
  transform: translateY(-120%);
  transition: transform var(--duration) var(--ease);
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--color-signal-green);
  box-shadow: 0 0 8px rgba(195, 245, 62, 0.65);
  z-index: 1001;
  pointer-events: none;
}

#main-content {
  display: block;
  scroll-margin-top: calc(var(--header-height) + 8px);
}

#main-content:focus {
  outline: none;
}

.site-container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
}

.container-narrow {
  width: 100%;
  max-width: 760px;
  margin-inline: auto;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-gray-blue);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--color-line-muted);
}

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

.breadcrumb a:hover {
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: 2px;
  background: transparent;
  color: var(--color-space-ink);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), background var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.btn:hover {
  transform: translate3d(0, -2px, 0);
  box-shadow: var(--shadow-lift);
}

.btn:active {
  transform: translate3d(0, 0, 0);
}

.btn--primary {
  background: var(--color-active-orange);
  border-color: var(--color-active-orange);
  color: var(--color-space-ink);
}

.btn--primary:hover {
  background: var(--color-signal-green);
  border-color: var(--color-signal-green);
  color: var(--color-space-ink);
}

.btn--secondary {
  border-color: var(--color-line-muted);
  color: var(--color-space-ink);
}

.btn--secondary:hover {
  border-color: var(--color-link-blue);
  color: var(--color-link-blue);
}

.btn--legacy {
  border-color: rgba(198, 43, 46, 0.65);
  background: rgba(198, 43, 46, 0.06);
  color: #B3373A;
}

.btn--legacy:hover {
  background: rgba(198, 43, 46, 0.14);
  border-color: var(--color-legacy-red);
  color: var(--color-legacy-red);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-space-ink);
  color: var(--color-warm-paper);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-active-orange) 0 18%, var(--color-signal-green) 18% 36%, transparent 36%);
}

.site-header__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 48px);
  height: var(--header-height);
}

.site-brand {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  color: var(--color-warm-paper);
  text-decoration: none;
}

.site-brand__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 34px;
  line-height: 1;
  color: var(--color-warm-paper);
  letter-spacing: 0.01em;
}

.site-brand__text {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--color-warm-paper);
}

.site-brand__sup {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 10px;
  color: var(--color-active-orange);
  align-self: flex-start;
  line-height: 1;
  margin-top: 4px;
}

.site-brand__legacy {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 5px;
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  color: #FF9D9D;
  border: 1px solid rgba(198, 43, 46, 0.6);
  border-radius: 2px;
  background: rgba(198, 43, 46, 0.12);
}

.site-nav {
  display: flex;
  align-items: center;
}

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

.site-nav__link {
  display: block;
  padding: 8px 12px;
  color: #C9D3E0;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.site-nav__link:hover {
  color: var(--color-active-orange);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-active-orange);
  border-bottom-color: var(--color-signal-green);
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: transparent;
  border: 0;
  color: var(--color-warm-paper);
  cursor: pointer;
}

.nav-toggle__box {
  position: relative;
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: background var(--duration) var(--ease);
}

.nav-toggle__box::before,
.nav-toggle__box::after {
  content: "";
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: transform var(--duration) var(--ease);
}

.nav-toggle__box::before {
  top: -7px;
}

.nav-toggle__box::after {
  top: 7px;
}

.nav-toggle__label {
  font-size: 13px;
  font-weight: 500;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box::before {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__box::after {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  background: var(--color-space-ink);
  color: #94A3B8;
}

.site-footer__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: clamp(48px, 6vw, 80px) clamp(20px, 4vw, 48px) 24px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: clamp(24px, 4vw, 64px);
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.site-brand--footer .site-brand__mark {
  font-size: 40px;
}

.site-brand--footer .site-brand__text {
  font-size: 21px;
}

.site-footer__note {
  max-width: 360px;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: #738196;
}

.site-footer__col {
  display: flex;
  flex-direction: column;
}

.site-footer__heading {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-sand);
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer__links a {
  color: #8DA0B8;
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.site-footer__links a:hover {
  color: var(--color-active-orange);
}

.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: #64748B;
}

.site-footer__contact span {
  display: inline-flex;
}

.site-footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 12px;
  color: #475569;
}

.site-footer__meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-hero {
  padding: clamp(64px, 10vw, 128px) 0 clamp(48px, 6vw, 80px);
  background: var(--color-space-ink);
  color: var(--color-warm-paper);
  overflow: hidden;
}

.page-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 900;
  line-height: 1.05;
  text-wrap: balance;
}

.page-hero__lead {
  max-width: 640px;
  margin: 0;
  font-size: clamp(16px, 1.2vw, 20px);
  line-height: 1.7;
  color: #AAB8C8;
}

.section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: baseline;
  margin-bottom: 32px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 40px);
  font-weight: 500;
  line-height: 1;
  color: var(--color-active-orange);
}

.section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 48px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-space-ink);
}

.grid {
  display: grid;
  gap: clamp(16px, 3vw, 32px);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.stat-card {
  padding: 24px;
  background: var(--color-deep-slate);
  color: var(--color-warm-paper);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(7, 16, 31, 0.2);
}

.stat-card__value {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 900;
  line-height: 1;
  color: var(--color-signal-green);
}

.stat-card__label {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--color-gray-blue);
}

.table-wrap {
  overflow-x: auto;
  background: var(--color-warm-paper);
  border: 1px solid var(--color-line-muted);
  box-shadow: var(--shadow-soft);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-line-muted);
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-gray-blue);
  background: var(--color-sand);
}

.data-table tbody tr {
  transition: background var(--duration) var(--ease);
}

.data-table tbody tr:hover {
  background: rgba(29, 91, 200, 0.06);
}

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

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  border-radius: 2px;
  background: var(--color-signal-green);
  color: var(--color-space-ink);
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--color-line-muted);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-space-ink);
  background: transparent;
}

.image-figure {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-deep-slate), var(--color-space-ink));
}

.image-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 90, 46, 0.22) 48%, transparent 62%);
  opacity: 0.7;
  pointer-events: none;
}

.image-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-figure--16x9 {
  aspect-ratio: 16 / 9;
}

.image-figure--4x3 {
  aspect-ratio: 4 / 3;
}

.image-figure--3x4 {
  aspect-ratio: 3 / 4;
}

@media (max-width: 960px) {
  .site-header__inner {
    height: 64px;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 99;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 16px 24px 24px;
    background: var(--color-space-ink);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    padding: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .site-nav__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-left: 0;
    padding-left: 0;
    margin-top: 12px;
    padding-top: 12px;
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .site-footer__top {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

@media (max-width: 640px) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .site-footer__brand {
    grid-column: auto;
  }

  .site-footer__contact {
    flex-direction: column;
    gap: 8px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .scroll-progress {
    display: none;
  }

  .btn:hover {
    transform: none;
    box-shadow: none;
  }
}