:root {
  --c-primary: #0a1e3f;
  --c-primary-light: #1b3a6b;
  --c-primary-dark: #041020;
  --c-gold: #d4af37;
  --c-gold-light: #e6c86a;
  --c-red: #e04f4a;
  --c-text: #f5f7fa;
  --c-text-sub: #b0c4de;
  --c-bg-light: #f0f2f5;
  --c-grid: rgba(212, 175, 55, 0.25);
  --font-head: "Noto Serif SC", "Source Han Serif", serif;
  --font-body: "Noto Sans SC", "PingFang SC", sans-serif;
  --container: 1180px;
  --header-h: 4.25rem;
  --transition: 0.2s ease;
}

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

html {
  background: var(--c-primary-dark);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: transparent;
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--c-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--c-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0;
  animation: gridReveal 1.2s ease-out forwards;
}

body::after {
  content: "";
  position: fixed;
  top: -18vw;
  right: -12vw;
  width: 58vw;
  height: 58vw;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.12), transparent 66%);
}

main {
  display: block;
  position: relative;
  z-index: 1;
}

main:focus {
  outline: none;
}

a {
  color: var(--c-gold-light);
  text-decoration: none;
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

a:hover {
  color: var(--c-gold);
}

button {
  font: inherit;
  color: inherit;
}

button:not(:disabled) {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--c-gold-light);
  outline-offset: 3px;
}

::selection {
  background: var(--c-gold);
  color: var(--c-primary-dark);
}

[hidden] {
  display: none !important;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--c-text);
  line-height: 1.25;
  margin: 0 0 0.55em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 1rem;
}

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
}

[id] {
  scroll-margin-top: 6rem;
}

.skip-link {
  position: fixed;
  top: 0.8rem;
  left: 50%;
  transform: translateX(-50%) translateY(-220%);
  background: var(--c-gold);
  color: #041020;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0.75rem 0.75rem 0.75rem;
  font-weight: 700;
  z-index: 2000;
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateX(-50%) translateY(0);
  color: #041020;
}

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

.container--narrow {
  max-width: 860px;
}

.section {
  padding-block: 4rem;
  position: relative;
}

.section--tight {
  padding-block: 2.5rem;
}

.section--light {
  background: var(--c-bg-light);
  color: #1b3a6b;
  border-radius: 4px 24px 4px 24px;
}

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

.section--light .section__subtitle,
.section--light .lede,
.section--light .prose,
.section--light p {
  color: #31415e;
}

.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.section__title {
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.15;
  margin: 0;
  letter-spacing: 0.02em;
}

.section__subtitle {
  color: var(--c-text-sub);
  margin-top: 0.5rem;
  font-size: 1rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold-light);
  border-bottom: 1px solid var(--c-gold);
  padding-bottom: 0.25rem;
  margin-bottom: 1rem;
}

.lede {
  font-size: 1.1rem;
  color: var(--c-text-sub);
  max-width: 65ch;
  line-height: 1.9;
}

.prose {
  max-width: 70ch;
  color: var(--c-text-sub);
}

.prose p {
  margin: 0 0 1.2rem;
}

.prose h2 {
  margin-top: 2rem;
}

.prose h3 {
  color: var(--c-gold-light);
  margin-top: 1.5rem;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

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

.chamfer {
  background: rgba(27, 58, 107, 0.55);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 4px 18px 4px 18px;
  padding: 2rem;
  position: relative;
}

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

.status-dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.14);
}

.status-dot--red {
  background: var(--c-red);
  box-shadow: 0 0 0 4px rgba(224, 79, 74, 0.14);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(27, 58, 107, 0.6);
  border: 1px solid rgba(212, 175, 55, 0.28);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.78rem;
  color: var(--c-gold-light);
  white-space: nowrap;
}

.divider {
  border: 0;
  height: 1px;
  margin: 2.5rem 0;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.45), rgba(212, 175, 55, 0.05) 70%, transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--c-gold-light);
  border-radius: 999px;
  padding: 0.7rem 1.4rem;
  min-height: 2.75rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
}

.btn:hover {
  background: rgba(212, 175, 55, 0.12);
  color: var(--c-gold-light);
  border-color: var(--c-gold-light);
}

.btn--gold {
  background: linear-gradient(135deg, var(--c-gold), var(--c-gold-light));
  color: #041020;
  border-color: var(--c-gold-light);
}

.btn--gold:hover {
  filter: brightness(1.08);
  color: #041020;
}

.btn--ghost {
  border-color: rgba(245, 247, 250, 0.2);
  color: var(--c-text);
}

.btn--ghost:hover {
  border-color: var(--c-gold-light);
  color: var(--c-gold-light);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  font-size: 0.85rem;
  color: var(--c-text-sub);
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  padding: 0 0.4rem;
  color: var(--c-gold);
  opacity: 0.6;
}

.breadcrumb__link {
  color: var(--c-text-sub);
}

.breadcrumb__link:hover {
  color: var(--c-gold-light);
}

.breadcrumb__item[aria-current="page"] {
  color: var(--c-gold-light);
}

.figure-frame {
  position: relative;
  display: block;
  width: 100%;
  min-height: 10rem;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.08) 25%, transparent 25%) 0 0 / 24px 24px,
    var(--c-primary-light);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 4px 18px 4px 18px;
}

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

.figure-frame--standard {
  aspect-ratio: 4 / 3;
}

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

.figure-frame__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 0.25rem 0.7rem;
  background: rgba(4, 16, 32, 0.78);
  color: var(--c-gold-light);
  font-size: 0.8rem;
  border-top-right-radius: 0.6rem;
}

.site-header {
  position: sticky;
  top: 0.75rem;
  z-index: 1000;
  padding: 0 1rem;
}

.site-header__inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 0.9rem;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0.4rem 0.4rem 0.4rem 1.25rem;
  min-height: var(--header-h);
  background: rgba(10, 30, 63, 0.9);
  border: 1px solid rgba(212, 175, 55, 0.45);
  border-radius: 999px;
  box-shadow: 0 12px 30px rgba(4, 16, 32, 0.35);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 0 1 auto;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--c-text);
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: 0.05em;
  font-size: 1.15rem;
  white-space: nowrap;
}

.site-brand:hover {
  color: var(--c-gold-light);
}

.site-brand__mark {
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid var(--c-gold);
  border-radius: 0.25rem;
  transform: rotate(45deg) scale(0.9);
}

.site-brand__star {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1;
  color: var(--c-gold-light);
  transform: rotate(0deg);
}

.site-brand__text {
  white-space: nowrap;
}

.site-brand__app {
  color: var(--c-gold);
  font-weight: 700;
  margin-left: 0.15rem;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.4);
  color: var(--c-text);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
}

.nav-toggle:hover {
  border-color: var(--c-gold);
  color: var(--c-gold-light);
}

.nav-toggle__label {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.nav-toggle__icon {
  display: inline-flex;
  flex-direction: column;
  gap: 0.28rem;
  width: 1.1rem;
}

.nav-toggle__icon i {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}

.site-header[data-open] .nav-toggle__icon i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header[data-open] .nav-toggle__icon i:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .nav-toggle__icon i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-header[data-open] .nav-toggle__label {
  color: var(--c-gold-light);
}

.primary-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  flex: 1 1 auto;
  margin-left: 0.5rem;
}

.primary-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--c-text-sub);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.primary-nav__link:hover {
  color: var(--c-text);
  background: rgba(212, 175, 55, 0.12);
  border-color: rgba(212, 175, 55, 0.25);
}

.primary-nav__link[aria-current="page"] {
  background: var(--c-gold);
  color: var(--c-primary-dark);
  border-color: var(--c-gold-light);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.16);
  font-weight: 700;
}

.primary-nav__link[aria-current="page"]:hover {
  background: var(--c-gold-light);
  color: var(--c-primary-dark);
}

.header-search {
  position: relative;
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.header-search__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: 999px;
  color: var(--c-gold-light);
  font-weight: 500;
}

.header-search__toggle:hover,
.header-search__toggle[aria-expanded="true"] {
  background: rgba(212, 175, 55, 0.16);
  border-color: var(--c-gold-light);
  color: var(--c-gold-light);
}

.header-search__glyph {
  position: relative;
  display: inline-block;
  width: 0.8rem;
  height: 0.8rem;
  border: 1px solid currentColor;
  border-radius: 50%;
}

.header-search__glyph::after {
  content: "";
  position: absolute;
  right: -0.3rem;
  bottom: -0.18rem;
  width: 0.42rem;
  height: 2px;
  background: currentColor;
  transform: rotate(45deg);
}

.header-search__label {
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.header-search__toggle .header-search__label {
  color: currentColor;
}

.header-search__panel .header-search__label {
  display: block;
  color: var(--c-text-sub);
  margin-bottom: 0.5rem;
}

.header-search__panel {
  position: absolute;
  top: calc(100% + 0.75rem);
  right: 0;
  width: 24rem;
  max-width: calc(100vw - 2rem);
  padding: 1.25rem;
  background: rgba(10, 30, 63, 0.98);
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 4px 18px 4px 18px;
  box-shadow: 0 18px 40px rgba(4, 16, 32, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-search__input {
  display: block;
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid rgba(212, 175, 55, 0.35);
  border-radius: 0.375rem;
  background: rgba(4, 16, 32, 0.5);
  color: var(--c-text);
}

.header-search__input:focus {
  outline: none;
  border-color: var(--c-gold-light);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.18);
}

.header-search__input::placeholder {
  color: var(--c-text-sub);
  opacity: 0.7;
}

.header-search__hint {
  font-size: 0.82rem;
  color: var(--c-text-sub);
  margin: 0.6rem 0 0;
}

.header-search__results {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.75rem;
  max-height: 16rem;
  overflow: auto;
}

.header-search__result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  width: 100%;
  text-align: left;
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 0.4rem;
  padding: 0.55rem 0.75rem;
  color: var(--c-text);
  font: inherit;
  cursor: pointer;
}

.header-search__result:hover,
.header-search__result:focus {
  background: rgba(212, 175, 55, 0.16);
  border-color: var(--c-gold-light);
}

.header-search__result-name {
  font-size: 0.88rem;
}

.header-search__result-route {
  flex-shrink: 0;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold-light);
}

.header-search__empty {
  color: var(--c-red);
  font-size: 0.85rem;
  margin: 0;
}

.site-footer {
  position: relative;
  z-index: 1;
  margin-top: 4rem;
  background: var(--c-primary-dark);
  border-top: 1px solid rgba(212, 175, 55, 0.18);
  padding: 3.5rem 1.5rem 1.5rem;
}

.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--c-text);
}

.site-footer__logo:hover {
  color: var(--c-gold-light);
}

.site-footer__logo-app {
  color: var(--c-gold);
}

.site-footer__desc {
  max-width: 34ch;
  margin: 0;
  color: var(--c-text-sub);
  font-size: 0.9rem;
  line-height: 1.8;
}

.site-footer__info,
.site-footer__nav,
.site-footer__state {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.site-footer__heading {
  margin: 0;
  padding-left: 0.6rem;
  border-left: 3px solid var(--c-gold);
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--c-gold-light);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  color: var(--c-text-sub);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.site-footer__list li {
  position: relative;
  padding-left: 1rem;
}

.site-footer__list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--c-gold);
}

.site-footer__nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.site-footer__nav a {
  display: inline-block;
  padding: 0.2rem 0;
  color: var(--c-text-sub);
  font-size: 0.9rem;
  border-bottom: 1px solid transparent;
}

.site-footer__nav a:hover {
  color: var(--c-gold-light);
  border-bottom-color: var(--c-gold);
}

.site-footer__state {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(27, 58, 107, 0.3));
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: 4px 18px 4px 18px;
  padding: 1rem 1.25rem;
}

.state-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--c-gold-light);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

.state-chip__light {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--c-gold);
  animation: statePulse 2.4s infinite;
}

.site-footer__trust {
  margin: 0.4rem 0 0;
  color: var(--c-text-sub);
  font-size: 0.8rem;
  line-height: 1.7;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  padding-top: 1.25rem;
  color: var(--c-text-sub);
  font-size: 0.82rem;
}

.site-footer__bottom a {
  color: var(--c-text-sub);
  border-bottom: 1px solid transparent;
}

.site-footer__bottom a:hover {
  color: var(--c-gold-light);
  border-bottom-color: var(--c-gold);
}

@keyframes gridReveal {
  from {
    opacity: 0;
  }
  to {
    opacity: 0.5;
  }
}

@keyframes statePulse {
  0% {
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.5);
  }
  60% {
    box-shadow: 0 0 0 8px rgba(212, 175, 55, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(212, 175, 55, 0);
  }
}

@media (max-width: 900px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 767px) {
  .container {
    padding-inline: 1.25rem;
  }

  .site-header {
    top: 0.5rem;
    padding: 0 0.75rem;
  }

  .site-header__inner {
    border-radius: 1rem;
    padding: 0.6rem 0.6rem 0.6rem 1rem;
    gap: 0.65rem;
  }

  .site-header__bar {
    flex: 1 1 100%;
    justify-content: space-between;
  }

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

  .primary-nav {
    order: 3;
    flex: 1 1 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    margin: 0;
    padding: 0.5rem 0 0.25rem;
    border-top: 1px solid rgba(212, 175, 55, 0.18);
  }

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

  .primary-nav__link {
    justify-content: space-between;
    border-radius: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.12);
    padding: 0.75rem 1rem;
  }

  .primary-nav__link::after {
    content: "→";
    color: var(--c-gold);
  }

  .primary-nav__link[aria-current="page"] {
    box-shadow: none;
  }

  .header-search {
    order: 4;
    flex: 1 1 100%;
  }

  .header-search__toggle {
    width: 100%;
    justify-content: center;
  }

  .header-search__panel {
    position: static;
    width: 100%;
    max-width: none;
    margin-top: 0.5rem;
    box-shadow: none;
  }

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

  .section--light {
    border-radius: 4px 16px 4px 16px;
  }

  .figure-frame,
  .figure-frame--wide,
  .figure-frame--standard,
  .figure-frame--portrait {
    aspect-ratio: 4 / 3;
  }
}

@media (max-width: 560px) {
  .site-footer {
    padding: 3rem 1rem 1rem;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

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

@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;
  }

  body::before {
    animation: none;
    opacity: 0.5;
  }

  .state-chip__light {
    animation: none;
  }
}