html {
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  font-family: "Noto Sans SC", "Source Han Sans", "Microsoft YaHei", sans-serif;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #222222;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
ol,
figure {
  margin: 0;
  padding: 0;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease, border-color 0.3s ease;
}

a:hover {
  color: inherit;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

:focus-visible {
  outline: 2px solid #e0aa4e;
  outline-offset: 3px;
}

::selection {
  background: #e0aa4e;
  color: #0a1226;
}

:root {
  --color-bg-dark: #0a1226;
  --color-bg-darkblue: #1b2a4a;
  --color-bg-light: #f5efe6;
  --color-bg-white: #ffffff;
  --color-accent: #d64040;
  --color-accent-dark: #a02222;
  --color-gold: #e0aa4e;
  --color-gold-light: #f2c96e;
  --color-blue-secondary: #3d5a80;
  --color-fire-start: #d64040;
  --color-fire-end: #a02222;
  --color-ink: #222222;
  --color-ink-dark: #0a1226;
  --color-ink-light: #ffffff;
  --color-ink-blue: #1b2a4a;
  --font-heading: "Orbitron", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans", "Microsoft YaHei", sans-serif;
  --size-1: clamp(2rem, 8vw, 5rem);
  --size-title: clamp(1.6rem, 4.5vw, 2.4rem);
  --size-sub: 0.9rem;
  --size-tiny: 0.75rem;
  --size-body: 0.9rem;
  --space-section: 5rem;
  --radius: 12px;
  --header-height: 4.4rem;
  --max-width: 1280px;
}

@media screen and (max-width: 600px) {
  :root {
    --space-section: 3rem;
    --header-height: 3.75rem;
  }
}

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -4rem;
  background: var(--color-gold);
  color: var(--color-ink);
  padding: 0.7rem 1.2rem;
  z-index: 9999;
  border-radius: 6px;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: none;
}

.skip-link:focus-visible {
  top: 0.5rem;
}

.site-header {
  background: var(--color-bg-dark);
  border-bottom: 1px solid rgba(224, 170, 78, 0.3);
  color: var(--color-ink-light);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.4rem 1.2rem;
  min-height: var(--header-height);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.2rem 0;
}

.brand-star {
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  transition: transform 0.4s ease, filter 0.3s ease;
}

.brand-star svg {
  width: 100%;
  height: 100%;
  display: block;
}

.brand-link:hover .brand-star {
  transform: rotate(-12deg) scale(1.05);
  filter: drop-shadow(0 0 6px rgba(242, 201, 110, 0.7));
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-gold-light);
  white-space: nowrap;
}

.brand-code {
  font-size: 0.72rem;
  color: rgba(245, 239, 230, 0.6);
  letter-spacing: 0.02em;
  margin-left: 0.1rem;
  border-left: 1px solid rgba(245, 239, 230, 0.2);
  padding-left: 0.6rem;
  white-space: nowrap;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-toggle {
  display: none;
  position: relative;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 6px;
  padding: 0.55rem 0.6rem;
  flex-direction: column;
  justify-content: space-between;
  background: rgba(224, 170, 78, 0.08);
  border: 1px solid rgba(224, 170, 78, 0.3);
}

.nav-toggle__line {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-gold-light);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-toggle:hover {
  background: rgba(224, 170, 78, 0.15);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-block;
  padding: 0.55rem 0.9rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: rgba(245, 239, 230, 0.85);
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
}

.nav-link::before {
  content: attr(data-index);
  font-size: 0.65rem;
  color: var(--color-gold);
  margin-right: 0.35rem;
  opacity: 0.6;
}

.nav-link:hover {
  color: var(--color-gold-light);
  background: rgba(224, 170, 78, 0.08);
  border-color: rgba(224, 170, 78, 0.2);
}

.nav-link[aria-current="page"],
.nav-link[data-current="true"] {
  color: var(--color-gold-light);
  background: rgba(224, 170, 78, 0.12);
  border-color: rgba(224, 170, 78, 0.3);
  box-shadow: inset 0 -2px 0 var(--color-gold);
}

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

.login-link {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-ink-dark);
  background: var(--color-gold);
  padding: 0.5rem 1.1rem;
  border-radius: 6px;
  letter-spacing: 0.08em;
  transition: background-color 0.3s, color 0.3s, border-color 0.3s, transform 0.2s;
}

.login-link:hover {
  background: var(--color-gold-light);
  color: #0a1226;
  transform: translateY(-1px);
}

@media screen and (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
    flex-shrink: 0;
  }

  .header-inner {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }

  .brand-code {
    display: none;
  }

  .brand-list {
    display: inline-flex;
  }

  .site-nav {
    display: block;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    width: 100%;
    transition: max-height 0.4s ease, opacity 0.35s ease, visibility 0.35s ease;
  }

  .site-nav[data-open="true"] {
    max-height: 32rem;
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    margin-top: 0.8rem;
    gap: 0.2rem;
  }

  .nav-item {
    border-bottom: 1px solid rgba(245, 239, 230, 0.08);
  }

  .nav-link {
    display: block;
    padding: 0.75rem 0.5rem;
    border-radius: 0;
    border: none;
  }

  .nav-link[aria-current="page"],
  .nav-link[data-current="true"] {
    border-left: 3px solid var(--color-gold);
    box-shadow: none;
  }

  .nav-login {
    margin: 0.8rem 0;
  }

  .login-link {
    display: block;
    text-align: center;
  }

  .nav-list {
    order: 2;
  }
}

.site-footer {
  background: var(--color-bg-dark);
  color: rgba(245, 239, 230, 0.75);
  border-top: 2px solid var(--color-gold);
  padding: 3rem 0 2rem;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, transparent 0%, rgba(224, 170, 78, 0.1) 30%, rgba(224, 170, 78, 0.5) 50%, transparent 100%);
  background-size: 100% 100%;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 2fr 1.4fr;
  column-gap: 2rem;
  row-gap: 2.4rem;
}

.footer-archive {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.archive-row {
  display: flex;
  align-items: baseline;
  padding-bottom: 0.4rem;
  border-bottom: 1px dashed rgba(245, 239, 230, 0.15);
}

.archive-key {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-gold);
  width: 6rem;
  flex-shrink: 0;
  text-transform: uppercase;
}

.archive-value {
  font-size: 0.85rem;
  color: rgba(245, 239, 230, 0.85);
}

.footer-shortcuts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.4rem;
}

.shortcut-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.shortcut-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  border-bottom: 1px solid rgba(242, 201, 110, 0.4);
  padding-bottom: 0.4rem;
  margin-bottom: 0.5rem;
}

.shortcut-link {
  font-size: 0.82rem;
  padding: 0.1rem 0;
  color: rgba(245, 239, 230, 0.75);
  position: relative;
  transition: color 0.3s, padding-left 0.3s;
}

.shortcut-link::before {
  content: "◇ ";
  color: rgba(224, 170, 78, 0.5);
  font-size: 0.7rem;
}

.shortcut-link:hover {
  color: var(--color-gold-light);
  padding-left: 0.2rem;
}

.footer-bottom {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(245, 239, 230, 0.15);
  font-size: 0.75rem;
  color: rgba(245, 239, 230, 0.5);
}

.footer-line {
  grid-column: 1 / -1;
  text-align: center;
  max-width: 38rem;
  margin: 0 auto;
  font-size: 0.72rem;
  line-height: 1.5;
}

@media screen and (max-width: 720px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-shortcuts {
    gap: 1rem;
  }
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.2rem;
}

.breadcrumb {
  padding: 1rem 0;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-blue-secondary);
}

.breadcrumb a {
  color: var(--color-blue-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.breadcrumb a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--color-ink);
  font-weight: 500;
}

.page-title {
  font-family: var(--font-heading);
  font-size: var(--size-1);
  font-weight: 300;
  line-height: 1.08;
  color: var(--color-ink-blue);
  letter-spacing: 0.02em;
  border-bottom: 2px solid var(--color-bg-light);
  padding-bottom: 0.8rem;
}

.page-subtitle {
  font-size: 0.85rem;
  color: var(--color-blue-secondary);
  letter-spacing: 0.08em;
  margin-top: 0.6rem;
}

.section__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.8rem;
}

.section-index {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-gold-light);
  background: var(--color-bg-dark);
  padding: 0.2rem 0.6rem;
  letter-spacing: 0.1em;
  border: 1px solid rgba(224, 170, 78, 0.3);
  border-radius: 4px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--size-title);
  font-weight: 400;
  color: var(--color-ink-blue);
  letter-spacing: 0.03em;
  margin: 0;
}

.btn {
  display: inline-block;
  padding: 0.68rem 1.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  transition: all 0.3s ease;
}

.btn--gold {
  background: var(--color-gold);
  color: #0a1226;
  border-color: var(--color-gold);
}

.btn--gold:hover {
  background: var(--color-gold-light);
  border-color: var(--color-gold-light);
  box-shadow: 0 4px 16px rgba(224, 170, 78, 0.3);
}

.btn--red {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn--red:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  box-shadow: 0 4px 18px rgba(214, 64, 64, 0.35);
}

.btn--ghost {
  border-color: var(--color-blue-secondary);
  color: var(--color-ink-blue);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  box-shadow: 0 0 0 1px rgba(224, 170, 78, 0.2);
}

.panel {
  background: var(--color-bg-light);
  border-radius: var(--radius);
  border: 1px solid rgba(61, 90, 128, 0.15);
  padding: 1.6rem;
  box-shadow: 0 2px 10px rgba(10, 18, 38, 0.06);
}

.panel--dark {
  background: var(--color-bg-dark);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 20px 40px rgba(10, 18, 38, 0.25);
}

.panel--dark .panel__label {
  color: var(--color-gold-light);
}

.panel--dark .panel__text {
  color: rgba(245, 239, 230, 0.75);
}

.panel--light {
  background: var(--color-bg-white);
  box-shadow: 0 4px 14px rgba(10, 18, 38, 0.04);
}

.panel__label {
  display: inline-block;
  background: var(--color-bg-darkblue);
  color: var(--color-gold-light);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  padding: 0.3rem 0.7rem;
  text-transform: uppercase;
  border-radius: 4px;
  margin-bottom: 1rem;
}

.panel__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--color-ink-blue);
}

.panel--dark .panel__title {
  color: var(--color-bg-light);
}

.panel__text {
  font-size: 0.85rem;
  line-height: 1.6;
  color: rgba(59, 51, 40, 0.72);
}

.panel--dark .panel__text {
  color: rgba(245, 239, 230, 0.7);
}

.orbit-track {
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(224, 170, 78, 0.3), transparent);
  margin: 2.4rem 0;
  position: relative;
}

.orbit-track::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold-light);
  box-shadow: 0 0 10px rgba(242, 201, 110, 0.8);
}

.orbit-track--compact {
  margin: 1rem 0;
}

.constellation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.8rem;
  padding: 1rem 0 0.2rem;
}

.constellation-item {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(61, 90, 128, 0.15);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
  position: relative;
  color: var(--color-ink-blue);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.constellation-item:hover {
  border-color: var(--color-gold);
  box-shadow: 0 4px 12px rgba(224, 170, 78, 0.2);
  transform: translateY(-2px);
}

.constellation-item:focus-within {
  outline: 1px solid var(--color-gold);
  box-shadow: 0 0 0 3px rgba(224, 170, 78, 0.2);
}

.constellation-item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 4px;
  width: 7px;
  height: 7px;
  background: var(--color-gold);
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(224, 170, 78, 0.4);
}

.constellation-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: inherit;
}

.constellation-desc {
  font-size: 0.7rem;
  color: var(--color-blue-secondary);
  line-height: 1.4;
}

.img-frame {
  position: relative;
  display: block;
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, #1b2a4a 0%, #0a1226 50%, #d64040 130%);
  aspect-ratio: 4 / 3;
  min-height: 160px;
  color: var(--color-ink-light);
}

.img-frame--tall {
  aspect-ratio: 3 / 4;
}

.img-frame--wide {
  aspect-ratio: 16 / 7;
}

.img-frame--square {
  aspect-ratio: 1 / 1;
}

.img-frame__skeleton {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
  font-weight: 300;
}

.img-frame__skeleton::before {
  content: "◈ ";
  color: var(--color-gold-light);
  font-size: 1.8rem;
  margin-right: 0.5rem;
}

.data-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.4rem 0;
  border-bottom: 1px dashed rgba(61, 90, 128, 0.2);
  font-size: 0.8rem;
}

.data-row__key {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-blue-secondary);
  text-transform: uppercase;
}

.data-row__value {
  font-weight: 600;
  color: var(--color-ink-blue);
}

.data-row__value--accent {
  color: var(--color-accent);
}

.data-row__annotation {
  font-size: 0.7rem;
  color: var(--color-blue-secondary);
  margin-left: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.data-table th {
  text-align: left;
  padding: 0.6rem 0.8rem;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-light);
  background: var(--color-bg-darkblue);
  border-bottom: 2px solid var(--color-gold);
}

.data-table td {
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid rgba(61, 90, 128, 0.1);
}

.data-table tr:hover td {
  background: rgba(240, 219, 182, 0.25);
}

.marquee-helmet {
  background: var(--color-bg-darkblue);
  color: var(--color-bg-light);
  padding: 0.35rem 0;
  overflow: hidden;
}

.marquee-helmet__inner {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 1.4rem;
  white-space: nowrap;
  overflow-x: auto;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.2rem;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  scrollbar-width: none;
}

.marquee-helmet__inner::-webkit-scrollbar {
  display: none;
}

@keyframes starTwinkle {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.star-icon {
  display: inline-block;
  width: 0.6rem;
  height: 0.6rem;
  background: var(--color-gold-light);
  border-radius: 50%;
  animation: starTwinkle 3s ease-in-out infinite 0.5s;
}

.star-icon--red {
  background: var(--color-accent);
  animation-delay: 1.2s;
}

.star-icon--amber {
  background: var(--color-gold);
  animation-delay: 2.4s;
}

.scroll-track {
  position: fixed;
  top: 0;
  right: 0;
  width: 4px;
  height: 100vh;
  pointer-events: none;
  z-index: 3000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.scroll-track[data-visible="true"] {
  opacity: 1;
}

.scroll-track__fill {
  width: 100%;
  height: 0%;
  background: linear-gradient(180deg, var(--color-gold) 0%, var(--color-accent) 100%);
  border-radius: 0 0 4px 0;
}

@supports (animation-timeline: scroll()) {
  .scroll-track__fill {
    animation: auto linear trackProgress both;
    animation-timeline: scroll();
  }

  @keyframes trackProgress {
    from {
      height: 0%;
    }
    to {
      height: 100%;
    }
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}