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

* {
  margin: 0;
  padding: 0;
}

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

body {
  background:
    radial-gradient(800px 500px at 85% -5%, rgba(245, 194, 66, 0.08), transparent 60%),
    radial-gradient(600px 400px at -10% 25%, rgba(0, 229, 255, 0.06), transparent 60%),
    linear-gradient(180deg, #0B1B3D 0%, #0E2345 50%, #0B1B3D 100%);
  background-color: #0B1B3D;
  color: #F7F1E5;
  font-family: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Playfair Display", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  font-weight: 700;
  line-height: 1.2;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
  padding-left: 0;
}

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

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid #00E5FF;
  outline-offset: 2px;
  border-radius: 4px;
}

:root {
  --primary-bg: #0B1B3D;
  --cream-surface: #F7F1E5;
  --ink-text: #2B1E16;
  --gold-start: #F5C242;
  --gold-end: #E67E22;
  --red-orange: #E85D2F;
  --purple-highlight: #9B59B6;
  --cyan-accent: #00E5FF;
  --light-border: rgba(255, 255, 255, 0.15);
  --dark-shadow: rgba(0, 0, 0, 0.34);
  --gold-gradient: linear-gradient(135deg, #F5C242, #E67E22);
  --font-display: "Playfair Display", "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
  --radius-pill: 999px;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
  --shadow-float: 0 12px 32px rgba(0, 0, 0, 0.34);
  --header-top: 18px;
  --header-height: 64px;
  --page-pad: clamp(16px, 4vw, 64px);
}

#main-content {
  display: block;
  padding-top: calc(var(--header-top) + var(--header-height) + 24px);
}

.container {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: var(--page-pad);
}

.surface-cream {
  background: var(--cream-surface);
  color: var(--ink-text);
}

.skip-link {
  position: fixed;
  top: -120%;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  background: var(--gold-gradient);
  color: #0B1B3D;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 24px;
  border-radius: 0 0 var(--radius-pill) var(--radius-pill);
  box-shadow: var(--shadow-float);
  transition: top 0.3s ease;
}

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

.scroll-progress {
  position: absolute;
  top: -2px;
  left: 12%;
  width: 76%;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, #F5C242, #E67E22, #00E5FF);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
  z-index: 2;
}

.site-header {
  position: fixed;
  top: var(--header-top);
  left: 50%;
  transform: translateX(-50%);
  width: min(1180px, calc(100% - 32px));
  z-index: 1000;
  background: rgba(11, 27, 61, 0.82);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.34);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px 10px 20px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  border-radius: var(--radius-pill);
}

.site-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #F5C242, #E67E22);
  color: #0B1B3D;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  box-shadow: 0 0 16px rgba(245, 194, 66, 0.35);
  flex-shrink: 0;
}

.site-brand-mark--footer {
  width: 48px;
  height: 48px;
  font-size: 1.3rem;
}

.site-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-brand-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.site-brand-tag {
  font-size: 0.78rem;
  color: #F5C242;
  letter-spacing: 0.18em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav-link {
  display: inline-block;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(247, 241, 229, 0.84);
  transition: background-color 0.25s ease, color 0.25s ease;
}

.site-nav-link:hover,
.site-nav-link[aria-current="page"] {
  background: linear-gradient(135deg, #F5C242, #E67E22);
  color: #0B1B3D;
}

.site-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #F7F1E5;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  transition: background-color 0.2s ease;
}

.site-nav-toggle:hover {
  background: rgba(255, 255, 255, 0.08);
}

.site-nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.site-nav-toggle-icon i {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-icon i:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-icon i:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.site-nav-toggle-label-close {
  display: none;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-label-open {
  display: none;
}

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-label-close {
  display: inline;
}

.site-nav-drawer {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  right: 0;
  background: rgba(11, 27, 61, 0.97);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.34);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
}

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

.site-nav-drawer-list {
  display: grid;
  gap: 4px;
}

.site-nav-drawer-link {
  display: block;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  font-weight: 600;
  color: #F7F1E5;
  transition: background-color 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}

.site-nav-drawer-link:hover,
.site-nav-drawer-link[aria-current="page"] {
  background: rgba(245, 194, 66, 0.12);
  color: #F5C242;
  padding-left: 22px;
}

.site-nav-drawer-note {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  color: rgba(247, 241, 229, 0.6);
}

.site-footer {
  background: #F7F1E5;
  color: #2B1E16;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
  margin-top: auto;
}

.site-footer-wave {
  height: 6px;
  background: linear-gradient(135deg, #F5C242, #E67E22);
}

.site-footer-inner {
  max-width: 1180px;
  margin-inline: auto;
  padding: 56px var(--page-pad) 32px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 0.8fr;
  gap: 40px;
}

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

.site-footer-description {
  font-size: 0.92rem;
  color: #2B1E16;
  opacity: 0.75;
  max-width: 34ch;
}

.site-footer-heading {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid #F5C242;
  align-self: flex-start;
}

.site-footer-nav,
.site-footer-legal {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.site-footer-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  font-size: 0.92rem;
}

.site-footer-link {
  font-size: 0.92rem;
  color: #2B1E16;
  opacity: 0.85;
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.2s ease;
}

.site-footer-link:hover {
  opacity: 1;
  transform: translateX(3px);
  color: #9B59B6;
}

.site-footer-line {
  font-size: 0.92rem;
  opacity: 0.85;
  word-break: break-word;
}

.site-footer-bottom {
  border-top: 1px solid rgba(43, 30, 22, 0.15);
  margin-top: 32px;
  padding: 18px var(--page-pad) 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  opacity: 0.75;
}

.section {
  padding: 64px 0;
}

.section--tight {
  padding: 32px 0;
}

.section-header {
  max-width: 720px;
  margin-bottom: 36px;
}

.section-kicker {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #F5C242;
  margin-bottom: 12px;
  padding: 4px 14px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
}

.surface-cream .section-kicker {
  color: #E85D2F;
  border-color: rgba(232, 93, 47, 0.3);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  margin-bottom: 12px;
}

.section-subtitle {
  color: rgba(247, 241, 229, 0.72);
  max-width: 60ch;
}

.surface-cream .section-subtitle {
  color: rgba(43, 30, 22, 0.72);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #F5C242, #E67E22);
  color: #0B1B3D;
  box-shadow: 0 6px 16px rgba(245, 194, 66, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(245, 194, 66, 0.32);
}

.btn-outline {
  border: 1px solid #F5C242;
  color: #F5C242;
  background: transparent;
}

.btn-outline:hover {
  background: rgba(245, 194, 66, 0.08);
}

.btn-surface {
  background: #F7F1E5;
  color: #2B1E16;
}

.btn-surface:hover {
  background: #fdf9ef;
}

.card {
  background: #F7F1E5;
  color: #2B1E16;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.34);
}

.card--dark {
  background: rgba(255, 255, 255, 0.04);
  color: #F7F1E5;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: none;
}

.card-kicker {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #E85D2F;
  font-weight: 700;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 8px 0 12px;
  line-height: 1.25;
}

.card-content {
  font-size: 0.95rem;
  line-height: 1.7;
  opacity: 0.85;
}

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

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

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

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

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
  margin-bottom: 36px;
}

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

.breadcrumb a {
  color: #F5C242;
}

.breadcrumb a[aria-current="page"] {
  color: #F7F1E5;
}

.breadcrumb-separator {
  opacity: 0.5;
}

.timeline {
  position: relative;
  padding-left: 32px;
  display: grid;
  gap: 28px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(to bottom, #F5C242, #E67E22, transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -32px;
  top: 8px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #0B1B3D;
  border: 3px solid #F5C242;
  box-shadow: 0 0 0 4px rgba(245, 194, 66, 0.12);
}

.timeline-date {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #9B59B6;
  text-transform: uppercase;
}

.timeline-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 4px 0 6px;
}

.timeline-content {
  font-size: 0.92rem;
  opacity: 0.85;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #F7F1E5;
}

.chip--gold {
  background: rgba(245, 194, 66, 0.14);
  border-color: rgba(245, 194, 66, 0.35);
  color: #F8D877;
}

.chip--purple {
  background: rgba(155, 89, 182, 0.14);
  border-color: rgba(155, 89, 182, 0.35);
  color: #C39BD3;
}

.chip--cyan {
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
  color: #8CE9F8;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-pill);
  padding: 6px;
  width: max-content;
  max-width: 100%;
}

.tab-button {
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.9rem;
  color: rgba(247, 241, 229, 0.7);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.tab-button:hover {
  color: #F7F1E5;
}

.tab-button[aria-selected="true"] {
  background: linear-gradient(135deg, #F5C242, #E67E22);
  color: #0B1B3D;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  background: linear-gradient(145deg, #132650, #0B1B3D);
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

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

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

.media-frame-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(247, 241, 229, 0.28);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.85rem;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(247, 241, 229, 0.8);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #F5C242;
  flex-shrink: 0;
}

.index-list {
  display: grid;
  gap: 12px;
}

.index-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-weight: 600;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.index-link:hover {
  background: rgba(245, 194, 66, 0.08);
  border-color: rgba(245, 194, 66, 0.4);
  transform: translateX(4px);
}

.index-link-arrow {
  color: #F5C242;
  font-size: 1.1rem;
}

@media (prefers-reduced-motion: no-preference) {
  .has-js [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .has-js [data-reveal][data-revealed] {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  .site-nav {
    display: none;
  }

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

@media (max-width: 900px) {
  .content-grid--3,
  .content-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 640px) {
  .content-grid--2,
  .content-grid--3,
  .content-grid--4 {
    grid-template-columns: 1fr;
  }

  .site-footer-inner {
    grid-template-columns: 1fr;
    padding-top: 40px;
  }

  .site-footer-bottom {
    justify-content: center;
    text-align: center;
  }

  .section {
    padding: 44px 0;
  }

  .site-header-inner {
    padding-left: 14px;
    padding-right: 10px;
  }

  .site-brand-tag {
    display: none;
  }
}

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

  .site-nav-drawer,
  .site-nav-toggle-icon i,
  .has-js [data-reveal],
  .site-nav-link,
  .btn,
  .index-link {
    transition: none;
  }

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