:root {
  --c-blue: #0A1F44;
  --c-blue-dark: #081024;
  --c-gold: #C9A227;
  --c-red: #B22222;
  --c-white: #FFFFFF;
  --c-cream: #F5F0E6;
  --c-charcoal: #1D1D1B;
  --c-gold-grad: linear-gradient(135deg, #E0B84C 0%, #A67C00 100%);
  --font-head: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
  --container: 1200px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 6px;
  --shadow-hard: 6px 6px 0 rgba(8, 16, 36, 0.55);
  --shadow-float: 0 12px 40px rgba(0, 0, 0, 0.35);
  --border-thick: 3px;
  --border-med: 2px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-white);
  background-color: var(--c-blue);
  min-height: 100vh;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  line-height: 1.25;
  color: inherit;
}

h1 {
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 900;
}

h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 800;
}

h3 {
  font-size: clamp(20px, 2.6vw, 24px);
  font-weight: 700;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 300;
  background: var(--c-gold);
  color: var(--c-blue-dark);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 0 0 12px 12px;
  text-decoration: none;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--c-gold-grad);
  z-index: 200;
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 10px 16px;
  background: var(--c-blue);
}

.site-header__inner {
  position: relative;
  max-width: calc(var(--container) + 48px);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 12px 8px 20px;
  background: rgba(8, 16, 36, 0.88);
  border: var(--border-med) solid rgba(201, 162, 39, 0.32);
  border-radius: 999px;
  box-shadow: var(--shadow-float);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--c-white);
  transition: color 0.2s ease;
}

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

.site-brand__flags {
  display: inline-flex;
  gap: 3px;
  align-items: flex-start;
}

.site-brand__flags i {
  display: block;
  width: 7px;
  height: 11px;
  background: var(--c-gold);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.site-brand__flags i:nth-child(2) {
  background: var(--c-red);
}

.site-brand__flags i:nth-child(3) {
  background: var(--c-cream);
}

.site-brand__name {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.site-brand__edition {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-gold);
  border: 1px solid rgba(201, 162, 39, 0.45);
  border-radius: 999px;
  padding: 2px 8px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.site-nav__link::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--c-gold);
  opacity: 0.7;
}

.site-nav__link:hover {
  background-color: rgba(201, 162, 39, 0.12);
  color: var(--c-gold);
}

.site-nav__link[aria-current="page"] {
  background: var(--c-gold);
  color: var(--c-blue-dark);
  font-weight: 700;
}

.site-nav__link[aria-current="page"]::before {
  color: var(--c-blue-dark);
  opacity: 0.8;
}

.site-nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: var(--border-med) solid rgba(201, 162, 39, 0.4);
  border-radius: 999px;
  background: transparent;
}

.site-nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--c-gold);
  border-radius: 1px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

.site-footer {
  background-color: var(--c-charcoal);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 30px, rgba(201, 162, 39, 0.025) 30px, rgba(201, 162, 39, 0.025) 31px);
  color: var(--c-white);
  margin-top: 80px;
}

.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: var(--c-gold-grad);
}

.site-footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 56px 24px 32px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

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

.site-footer__col--brand {
  position: relative;
  padding-right: 16px;
}

.site-footer__col--brand::after {
  content: "";
  position: absolute;
  right: 8px;
  bottom: 8px;
  width: 64px;
  height: 64px;
  border: 2px solid rgba(201, 162, 39, 0.12);
  border-radius: 4px;
  transform: rotate(45deg);
  pointer-events: none;
}

.site-footer__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.site-footer__triangle {
  display: inline-block;
  width: 12px;
  height: 12px;
  background: var(--c-gold);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.site-footer__word {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.site-footer__desc {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-gold);
  letter-spacing: 0.04em;
  margin-bottom: 16px;
}

.site-footer__trust {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 40em;
}

.site-footer__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(201, 162, 39, 0.25);
}

.site-footer__list li,
.site-footer__contact li {
  padding: 4px 0;
}

.site-footer__list a,
.site-footer__contact a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.site-footer__list a:hover,
.site-footer__contact a:hover {
  color: var(--c-gold);
  padding-left: 4px;
}

.site-footer__contact {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}

.site-footer__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: rgba(201, 162, 39, 0.8);
  margin-bottom: 2px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  border: 2px solid transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.btn--gold {
  background: var(--c-gold-grad);
  border-color: var(--c-gold);
  color: var(--c-blue-dark);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.35);
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 162, 39, 0.45);
}

.btn--outline {
  background: transparent;
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.btn--outline:hover {
  background: rgba(201, 162, 39, 0.1);
}

.btn--small {
  padding: 6px 14px;
  font-size: 13px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  background: rgba(201, 162, 39, 0.14);
  border: 1px solid rgba(201, 162, 39, 0.35);
  color: var(--c-gold);
}

.badge--red {
  background: rgba(178, 34, 34, 0.18);
  border-color: rgba(178, 34, 34, 0.4);
  color: #FF8A80;
}

.tag {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid currentColor;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--c-gold);
}

.card {
  background: var(--c-cream);
  color: var(--c-blue);
  border: var(--border-thick) solid var(--c-blue-dark);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hard);
  padding: 24px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(8, 16, 36, 0.55);
}

.card--dark {
  background: var(--c-blue-dark);
  color: var(--c-white);
  border-color: var(--c-gold);
}

.breadcrumb {
  margin-bottom: 24px;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
}

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

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--c-gold);
}

.breadcrumb__link {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.breadcrumb__current {
  color: var(--c-gold);
  font-weight: 500;
}

.grid {
  display: grid;
  gap: 24px;
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--c-blue-dark);
  border: var(--border-med) solid var(--c-gold);
  border-radius: var(--radius-md);
}

.media-frame--16x9 {
  aspect-ratio: 16 / 9;
}

.media-frame--4x3 {
  aspect-ratio: 4 / 3;
}

.media-frame--1x1 {
  aspect-ratio: 1 / 1;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-title {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: var(--border-thick) solid var(--c-gold);
}

.section-title__index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-gold);
  white-space: nowrap;
}

.section-title__text {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
}

.divider {
  height: 3px;
  border: none;
  background: var(--c-gold-grad);
  margin: 32px 0;
}

.notice-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border: var(--border-med) solid rgba(201, 162, 39, 0.28);
  border-left: 4px solid var(--c-gold);
  border-radius: var(--radius-sm);
  background: rgba(8, 16, 36, 0.55);
  font-size: 14px;
  color: var(--c-white);
}

.notice-bar__icon {
  font-family: var(--font-mono);
  color: var(--c-gold);
}

.section {
  padding-block: 64px;
}

.section--dark {
  background: var(--c-blue);
  color: var(--c-white);
}

.section--light {
  background: var(--c-cream);
  color: var(--c-blue);
}

.section--light .section-title {
  border-bottom-color: var(--c-blue);
}

.section--light .section-title__index {
  color: var(--c-red);
}

.index-list {
  border-top: var(--border-med) solid rgba(201, 162, 39, 0.3);
}

.index-list__item {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(201, 162, 39, 0.15);
}

.index-list__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-gold);
  min-width: 30px;
}

.index-list__label {
  font-size: 15px;
  color: inherit;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

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

@media (max-width: 1024px) {
  .container {
    padding-inline: 20px;
  }

  .site-header {
    padding: 8px 12px;
  }

  .site-header__inner {
    padding: 6px 6px 6px 16px;
  }

  .site-brand__edition {
    display: none;
  }

  .site-nav__link {
    padding: 8px 10px;
    font-size: 13px;
  }

  .site-nav__link::before {
    display: none;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__top {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

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

  .site-header {
    padding: 8px 10px;
  }

  .site-header__inner {
    border-radius: 18px;
  }

  .site-brand__name {
    font-size: 18px;
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: block;
    background: var(--c-blue-dark);
    border: var(--border-med) solid var(--c-gold);
    border-radius: 16px;
    padding: 12px;
    box-shadow: var(--shadow-float);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

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

  .site-nav__link {
    display: flex;
    align-items: center;
    padding: 12px 14px;
    font-size: 15px;
    border-radius: 10px;
  }

  .site-nav__link::before {
    display: inline-block;
    min-width: 28px;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .section {
    padding-block: 40px;
  }

  .site-footer__inner {
    padding: 40px 16px 28px;
  }

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

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

@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}