:root {
  --color-navy: #0A1D3A;
  --color-gold: #D4AF37;
  --color-amber: #FFBF00;
  --color-slate: #556B7D;
  --color-graphite: #1C2833;
  --color-cream: #F5F1E8;
  --color-moss: #6B8E5A;
  --color-terra: #C77B56;
  --color-mist: #E0E8ED;
  --color-white: #FFFFFF;
  --font-head: 'Poppins', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --header-w: 280px;
  --topbar-h: 64px;
  --max-w: 1360px;
  --shadow-soft: 0 8px 24px rgba(10, 29, 58, 0.06);
  --shadow-lift: 0 18px 40px rgba(10, 29, 58, 0.12);
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--color-cream);
  color: var(--color-graphite);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0 0 0.55em;
  color: var(--color-navy);
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.18;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-navy);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-terra);
}

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

:focus-visible {
  outline: 3px solid var(--color-amber);
  outline-offset: 2px;
  border-radius: 4px;
}

[data-year] {
  font-variant-numeric: tabular-nums;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 3000;
  padding: 12px 20px;
  background: var(--color-navy);
  color: var(--color-cream);
  border-radius: 0 0 12px 0;
  text-decoration: none;
  font-weight: 600;
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 2500;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-amber));
  box-shadow: 0 0 8px rgba(255, 191, 0, 0.45);
  pointer-events: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 2000;
  width: var(--header-w);
  background: var(--color-navy);
  border-right: 1px solid rgba(212, 175, 55, 0.22);
  box-shadow: 10px 0 30px rgba(10, 29, 58, 0.12);
}

.site-header__inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 28px 20px 22px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(212, 175, 55, 0.3) transparent;
}

.brand-block {
  margin-bottom: 26px;
}

.brand-block__link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-block__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--color-gold), var(--color-amber));
  color: var(--color-navy);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 6px 18px rgba(212, 175, 55, 0.24);
}

.brand-block__name {
  color: var(--color-cream);
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.02em;
}

.brand-block__tagline {
  margin: 18px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--color-gold);
  color: #8FA4B8;
  font-size: 12px;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  flex: 1;
  flex-direction: column;
}

.site-nav__list {
  display: grid;
  gap: 6px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  counter-reset: nav-index;
}

.site-nav__item {
  margin: 0;
  counter-increment: nav-index;
}

.site-nav__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: #C8D4E0;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.site-nav__link::before {
  content: counter(nav-index, decimal-leading-zero);
  flex: 0 0 22px;
  width: 22px;
  color: #6E8295;
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.site-nav__link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.site-nav__link[aria-current="page"] {
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.2), rgba(212, 175, 55, 0.04));
  border-color: rgba(212, 175, 55, 0.28);
  color: #FFE08A;
}

.site-nav__link[aria-current="page"]::before {
  color: var(--color-amber);
  text-shadow: 0 0 8px rgba(255, 191, 0, 0.45);
}

.site-nav__foot {
  display: grid;
  gap: 12px;
  padding-top: 18px;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-nav__update {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #DCE6EC;
  font-size: 13px;
  text-decoration: none;
}

.site-nav__update:hover {
  color: #ffffff;
}

.site-nav__update_dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-moss);
  box-shadow: 0 0 0 3px rgba(107, 142, 90, 0.18);
  flex: 0 0 auto;
}

.site-nav__version {
  color: #6E8295;
  font-size: 12px;
  line-height: 1.5;
}

.nav-toggle {
  display: none;
}

.site-main {
  display: block;
  min-height: 80vh;
  margin-left: var(--header-w);
}

.content-wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 64px);
}

.section {
  padding-block: clamp(32px, 7vw, 88px);
}

.section--tight {
  padding-block: 24px;
}

.section--dark {
  background: var(--color-navy);
  color: var(--color-cream);
  border-top: 1px solid rgba(212, 175, 55, 0.14);
  border-bottom: 1px solid rgba(212, 175, 55, 0.14);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--color-cream);
}

.cover-index {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 72px);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: 24px;
  background: linear-gradient(135deg, var(--color-navy), #142A4D 68%, #204067);
  color: var(--color-cream);
  box-shadow: var(--shadow-lift);
}

.cover-index::before,
.cover-index::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.cover-index::before {
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.28), transparent 70%);
}

.cover-index::after {
  bottom: -90px;
  left: -40px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 191, 0, 0.18), transparent 70%);
}

.cover-index__title,
.cover-index__lead,
.cover-index__meta {
  position: relative;
  z-index: 1;
}

.cover-index__title {
  margin: 0 0 16px;
  color: var(--color-cream);
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.cover-index__lead {
  max-width: 38em;
  margin: 0;
  color: #C8D4E0;
  font-size: 1.0625rem;
}

.cover-index__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(18px, 2.4vw, 32px);
}

.col-span-3 {
  grid-column: span 3;
}

.col-span-4 {
  grid-column: span 4;
}

.col-span-6 {
  grid-column: span 6;
}

.col-span-8 {
  grid-column: span 8;
}

.col-span-12 {
  grid-column: span 12;
}

.card {
  min-width: 0;
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-mist);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
}

.card--dark {
  background: linear-gradient(145deg, var(--color-graphite), #15202B);
  border-color: rgba(224, 232, 237, 0.1);
  color: var(--color-cream);
}

.card--gold {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.14), rgba(255, 191, 0, 0.04));
  border-color: rgba(212, 175, 55, 0.32);
}

.card__title {
  margin-top: 0;
}

.card__meta {
  color: var(--color-slate);
  font-size: 0.875rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.4rem;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 0.925rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: background 0.25s, border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.btn--primary {
  background: var(--color-gold);
  color: var(--color-navy);
  box-shadow: 0 8px 20px rgba(212, 175, 55, 0.28);
}

.btn--primary:hover {
  background: var(--color-amber);
  color: var(--color-navy);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(212, 175, 55, 0.36);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-slate);
  color: var(--color-navy);
}

.btn--ghost:hover {
  border-color: var(--color-gold);
  color: var(--color-navy);
  box-shadow: 0 6px 18px rgba(10, 29, 58, 0.08);
}

.btn--light {
  background: var(--color-white);
  color: var(--color-navy);
}

.btn--light:hover {
  background: var(--color-cream);
  color: var(--color-navy);
  transform: translateY(-2px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--color-gold);
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-gold);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 999px;
  background: rgba(212, 175, 55, 0.12);
  color: var(--color-navy);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge--amber {
  border-color: rgba(255, 191, 0, 0.35);
  background: rgba(255, 191, 0, 0.14);
  color: #7a5a00;
}

.badge--moss {
  border-color: rgba(107, 142, 90, 0.3);
  background: rgba(107, 142, 90, 0.14);
  color: #3f5c32;
}

.badge--terra {
  border-color: rgba(199, 123, 86, 0.3);
  background: rgba(199, 123, 86, 0.14);
  color: #95532f;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  font-size: 0.875rem;
}

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

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
  color: var(--color-slate);
}

.breadcrumbs a {
  color: var(--color-slate);
  text-decoration: none;
}

.breadcrumbs a[aria-current="page"] {
  color: var(--color-navy);
  font-weight: 600;
}

.media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(224, 232, 237, 0.35);
  border-radius: 16px;
  background: linear-gradient(135deg, #10233F, var(--color-graphite) 60%, #24364D);
}

.media-frame::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.media-frame > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--portrait::before {
  padding-top: 120%;
}

.media-frame--tile::before {
  padding-top: 75%;
}

.media-caption {
  margin-top: 8px;
  color: var(--color-slate);
  font-size: 0.813rem;
}

.site-footer {
  margin-left: var(--header-w);
  padding: clamp(36px, 5vw, 72px) clamp(20px, 4vw, 64px) 0;
  background: var(--color-navy);
  color: #C8D4E0;
  border-top: 1px solid rgba(212, 175, 55, 0.18);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(24px, 4vw, 56px);
  max-width: var(--max-w);
  margin-inline: auto;
}

.site-footer__brand {
  min-width: 0;
}

.site-footer__logo {
  display: inline-block;
  color: var(--color-cream);
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  text-decoration: none;
}

.site-footer__about {
  max-width: 38em;
  margin: 16px 0 0;
  color: #8FA4B8;
  font-size: 0.938rem;
}

.site-footer__trust {
  margin: 18px 0 0;
  padding: 12px 16px;
  border-left: 2px solid var(--color-gold);
  background: rgba(212, 175, 55, 0.06);
  color: #BFCBD6;
  font-size: 0.875rem;
  line-height: 1.6;
}

.site-footer__col {
  min-width: 0;
}

.site-footer__heading {
  margin: 0 0 16px;
  color: var(--color-amber);
  font-family: var(--font-head);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-footer__list {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.site-footer__list a {
  color: #C8D4E0;
  font-size: 0.938rem;
  text-decoration: none;
}

.site-footer__list a:hover {
  color: var(--color-amber);
}

.site-footer__contact {
  display: grid;
  gap: 8px;
  color: #8FA4B8;
  font-size: 0.875rem;
  font-style: normal;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: clamp(24px, 4vw, 40px) auto 0;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: #6E8295;
  font-size: 0.813rem;
}

@media (max-width: 1023px) {
  .site-header {
    right: 0;
    bottom: auto;
    width: auto;
    height: var(--topbar-h);
    border-right: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.22);
  }

  .site-header__inner {
    flex-direction: row;
    align-items: center;
    height: var(--topbar-h);
    padding: 0 16px;
    overflow: visible;
  }

  .brand-block {
    display: flex;
    flex: 1;
    align-items: center;
    margin: 0;
  }

  .brand-block__tagline {
    display: none;
  }

  .brand-block__mark {
    width: 40px;
    height: 40px;
    font-size: 13px;
  }

  .brand-block__name {
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 48px;
    height: 48px;
    margin-left: auto;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-cream);
    cursor: pointer;
  }

  .nav-toggle__bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-amber);
    transition: transform 0.25s, opacity 0.25s;
  }

  .nav-toggle__label {
    font-size: 10px;
    line-height: 1;
    color: var(--color-cream);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: var(--topbar-h);
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    width: min(320px, 88vw);
    padding: 24px 20px;
    margin: 0;
    overflow-y: auto;
    background: var(--color-navy);
    border-left: 1px solid rgba(212, 175, 55, 0.2);
    box-shadow: -16px 0 36px rgba(0, 0, 0, 0.24);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.28s ease, visibility 0.28s;
  }

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

  .site-nav__foot {
    margin-top: 24px;
  }

  .site-main {
    margin-left: 0;
  }

  .site-footer {
    margin-left: 0;
  }

  .site-footer__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

  .col-span-3,
  .col-span-4 {
    grid-column: span 6;
  }

  .col-span-6,
  .col-span-8,
  .col-span-12 {
    grid-column: span 12;
  }
}

@media (max-width: 767px) {
  .content-wrap {
    padding-inline: 16px;
  }

  .section {
    padding-block: 40px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .site-footer__bottom {
    justify-content: flex-start;
  }

  .col-span-3,
  .col-span-4,
  .col-span-6,
  .col-span-8,
  .col-span-12 {
    grid-column: span 12;
  }

  .card {
    padding: 20px;
  }

  .cover-index {
    border-radius: 18px;
    padding: 28px 22px;
  }
}

@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;
  }
}