:root {
  --v-ink: #0A1E3C;
  --v-navy: #1E3A5F;
  --v-gold: #D4AF37;
  --v-gold-dark: #B8963E;
  --v-white: #FFFFFF;
  --v-ivory: #F5F0E6;
  --v-red: #E63946;
  --v-gray: #CCCCCC;
  --v-font-display: Didot, Georgia, "Noto Serif SC", "Songti SC", serif;
  --v-font-body: Roboto, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --v-header-width: 300px;
  --v-header-height: 64px;
  --v-radius: 2px;
  --v-shadow: 0 14px 30px rgba(10, 30, 60, .12);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--v-ink);
  color: var(--v-ink);
  font-family: var(--v-font-body);
  font-size: 16px;
  line-height: 1.6;
}

main {
  display: block;
  margin-left: var(--v-header-width);
  background: var(--v-white);
  min-height: 70vh;
  scroll-margin-top: calc(var(--v-header-height) + 1rem);
}

h1, h2, h3, h4, p, ul, ol, address, figure, blockquote {
  margin: 0;
}

ul[class], ol[class] {
  padding: 0;
  list-style: none;
}

h1, h2, h3 {
  font-family: var(--v-font-display);
  line-height: 1.15;
  font-weight: 600;
  color: var(--v-ink);
}

h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 300;
  letter-spacing: .01em;
}

h2 {
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  font-weight: 500;
}

h3 {
  font-size: 1.3rem;
}

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

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

button {
  font-family: inherit;
}

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

::selection {
  background: rgba(212, 175, 55, .35);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 10px 16px;
  background: var(--v-gold);
  color: var(--v-ink);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-300%);
  transition: transform .18s ease;
}

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

.site-header {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--v-header-width);
  background:
    radial-gradient(circle at 18% 0%, rgba(212, 175, 55, .14), transparent 38%),
    linear-gradient(165deg, #0A1E3C 0%, #122A4A 62%, #1E3A5F 100%);
  border-right: 1px solid rgba(212, 175, 55, .22);
  z-index: 1000;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 0 72%, rgba(212, 175, 55, .14) 72% 72.4%, transparent 72.4%);
  pointer-events: none;
}

.header-shell {
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 28px 24px 24px;
}

.brand-tag {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: #fff;
}

.brand-emblem {
  width: 48px;
  height: 48px;
  border-radius: 50% 50% 46% 54% / 58% 46% 54% 42%;
  border: 1.5px solid var(--v-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(212, 175, 55, .08);
  flex: 0 0 auto;
}

.brand-emblem-inner {
  font-family: var(--v-font-display);
  font-size: 24px;
  color: var(--v-gold);
  font-weight: 700;
}

.brand-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .06em;
  color: #fff;
}

.brand-sub {
  display: block;
  margin-top: 2px;
  font-size: 10px;
  letter-spacing: .28em;
  color: rgba(255, 255, 255, .55);
}

.nav-toggle {
  display: none;
}

.nav-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.nav-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 24px 0 10px;
  flex-wrap: wrap;
}

.version-badge {
  padding: 4px 8px;
  background: rgba(212, 175, 55, .12);
  border: 1px solid rgba(212, 175, 55, .35);
  border-radius: 999px;
  color: var(--v-gold);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
}

.nav-update-note {
  font-size: 11px;
  color: rgba(255, 255, 255, .55);
  line-height: 1.4;
}

.nav-update-note::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--v-red);
  vertical-align: 1px;
}

.site-nav {
  margin-top: 8px;
}

.nav-list {
  border-top: 1px solid rgba(255, 255, 255, .08);
}

.nav-item {
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 10px 14px 12px;
  border-left: 2px solid transparent;
  color: rgba(255, 255, 255, .78);
  text-decoration: none;
  font-size: 15px;
  transition: background .2s ease, padding-left .2s ease, color .2s ease;
}

.nav-index {
  min-width: 24px;
  font-family: var(--v-font-display);
  font-size: 11px;
  color: var(--v-gold);
  opacity: .8;
  letter-spacing: .06em;
}

.nav-link:hover {
  background: rgba(212, 175, 55, .08);
  border-left-color: var(--v-gold);
  color: #fff;
  padding-left: 18px;
}

.nav-link[aria-current="page"] {
  background: linear-gradient(90deg, rgba(212, 175, 55, .16), transparent 80%);
  border-left-color: var(--v-gold);
  color: #fff;
  font-weight: 700;
}

.nav-aside {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, .08);
}

.nav-cta {
  display: block;
  padding: 12px 16px;
  background: var(--v-gold);
  border-radius: var(--v-radius);
  color: var(--v-ink);
  text-align: center;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: background .2s ease, color .2s ease;
}

.nav-cta:hover {
  background: var(--v-gold-dark);
  color: #fff;
}

.nav-ps {
  margin-top: 14px;
  font-size: 10px;
  letter-spacing: .14em;
  color: rgba(255, 255, 255, .4);
  text-align: center;
}

.header-progress {
  --progress: 0;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 3px;
  background: rgba(255, 255, 255, .06);
  pointer-events: none;
  z-index: 3;
}

.header-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #F2D77B, var(--v-gold));
  transform: scaleY(var(--progress));
  transform-origin: top;
}

.site-footer {
  position: relative;
  margin-left: var(--v-header-width);
  background: #07162B;
  border-top: 1px solid rgba(212, 175, 55, .28);
  color: rgba(255, 255, 255, .72);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 14%;
  height: 2px;
  background: linear-gradient(90deg, var(--v-gold), transparent);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1.4fr;
  gap: 44px;
  max-width: 1180px;
  margin: 0 auto;
  padding: 56px clamp(24px, 4vw, 56px) 26px;
}

.footer-logo {
  font-family: var(--v-font-display);
  font-size: 1.6rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: .04em;
}

.footer-logo:hover {
  color: var(--v-gold);
}

.footer-tagline {
  margin: 10px 0 16px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--v-gold);
}

.footer-trust {
  max-width: 36em;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .6);
}

.footer-heading {
  margin: 0 0 14px;
  font-family: var(--v-font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: #fff;
}

.footer-heading::after {
  content: "";
  display: block;
  width: 26px;
  height: 1px;
  margin-top: 8px;
  background: var(--v-gold);
}

.footer-link-list {
  list-style: none;
  padding: 0;
}

.footer-link-list li {
  margin-bottom: 8px;
}

.footer-link-list a {
  color: rgba(255, 255, 255, .72);
  text-decoration: none;
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-link-list a:hover {
  color: var(--v-gold);
  padding-left: 4px;
}

.footer-address,
.footer-email,
.footer-phone {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-style: normal;
  color: rgba(255, 255, 255, .72);
}

.footer-address::before {
  content: "地址 ";
  color: var(--v-gold-dark);
}

.footer-email::before {
  content: "邮箱 ";
  color: var(--v-gold-dark);
}

.footer-phone::before {
  content: "电话 ";
  color: var(--v-gold-dark);
}

.footer-note {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 1px solid var(--v-gold-dark);
  font-size: 12px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .5);
}

.footer-meta {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 12px;
  color: rgba(255, 255, 255, .45);
}

.footer-copy,
.footer-icp {
  margin: 0;
}

.content-container {
  width: min(100%, 1180px);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 56px);
}

.kicker {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--v-gold-dark);
}

.marginal-label {
  font-family: var(--v-font-body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--v-gold-dark);
}

.marginal-note {
  max-width: 220px;
  padding-left: 14px;
  border-left: 2px solid var(--v-gold);
  font-size: 12px;
  line-height: 1.7;
  color: var(--v-navy);
}

.breadcrumbs {
  padding: 18px 0 0;
  font-size: 13px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  padding: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--v-gray);
}

.breadcrumb-link {
  color: var(--v-navy);
  text-decoration: none;
}

.breadcrumb-link:hover {
  color: var(--v-gold-dark);
}

.breadcrumb-current {
  color: var(--v-gold-dark);
  font-weight: 700;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--v-radius);
  background: none;
  color: var(--v-ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}

.btn-gold {
  background: var(--v-gold);
  border-color: var(--v-gold);
  color: var(--v-ink);
}

.btn-gold:hover {
  background: var(--v-gold-dark);
  border-color: var(--v-gold-dark);
  color: #fff;
}

.btn-outline {
  border-color: rgba(10, 30, 60, .3);
  color: var(--v-ink);
}

.btn-outline:hover {
  background: rgba(212, 175, 55, .08);
  border-color: var(--v-gold);
  color: var(--v-gold-dark);
}

.btn-text {
  padding: 0;
  color: var(--v-gold-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.btn-text:hover {
  color: var(--v-gold);
}

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

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

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

.grid-gap {
  gap: clamp(16px, 3vw, 32px);
}

.card {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  background: var(--v-ivory);
  border: 1px solid rgba(10, 30, 60, .08);
  border-radius: 4px;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.card:hover {
  border-color: var(--v-gold);
  box-shadow: var(--v-shadow);
  transform: translateY(-2px);
}

.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.card-title {
  font-family: var(--v-font-display);
  font-size: 1.35rem;
  margin-bottom: 8px;
}

.card-text {
  font-size: 14px;
  color: rgba(10, 30, 60, .72);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--v-navy);
  border: 1px solid rgba(212, 175, 55, .28);
}

.media-frame[data-ratio="4:3"] {
  aspect-ratio: 4 / 3;
}

.media-frame[data-ratio="1:1"] {
  aspect-ratio: 1 / 1;
}

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

.media-frame::after {
  content: "";
  position: absolute;
  inset: auto 12px 12px;
  width: 32px;
  height: 2px;
  background: var(--v-gold);
  opacity: .7;
  pointer-events: none;
}

@media (max-width: 960px) {
  main {
    margin-left: 0;
    padding-top: var(--v-header-height);
  }

  .site-header {
    inset: 0 0 auto 0;
    width: auto;
    height: var(--v-header-height);
    background: linear-gradient(120deg, #0A1E3C, #122A4A 70%, #1E3A5F);
    border-right: none;
    border-bottom: 1px solid rgba(212, 175, 55, .25);
  }

  .header-shell {
    flex-direction: row;
    align-items: center;
    height: var(--v-header-height);
    padding: 0 16px;
  }

  .brand-tag {
    flex: 1;
    min-width: 0;
    gap: 10px;
  }

  .brand-emblem {
    width: 36px;
    height: 36px;
  }

  .brand-emblem-inner {
    font-size: 18px;
  }

  .brand-name {
    font-size: 14px;
  }

  .brand-sub {
    font-size: 9px;
    letter-spacing: .18em;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: var(--v-radius);
    background: rgba(255, 255, 255, .03);
    color: #fff;
    cursor: pointer;
  }

  .nav-toggle-line {
    position: relative;
    width: 16px;
    height: 2px;
    background: var(--v-gold);
  }

  .nav-toggle-line::before,
  .nav-toggle-line::after {
    content: "";
    position: absolute;
    left: 0;
    width: 16px;
    height: 2px;
    background: var(--v-gold);
    transition: transform .18s ease, opacity .18s ease;
  }

  .nav-toggle-line::before {
    top: -5px;
  }

  .nav-toggle-line::after {
    top: 5px;
  }

  .site-header[data-open="true"] .nav-toggle-line {
    background: transparent;
  }

  .site-header[data-open="true"] .nav-toggle-line::before {
    transform: translateY(5px) rotate(45deg);
  }

  .site-header[data-open="true"] .nav-toggle-line::after {
    transform: translateY(-5px) rotate(-45deg);
  }

  .site-header[data-open="true"] .nav-toggle {
    border-color: var(--v-gold);
  }

  .nav-toggle-label {
    font-size: 12px;
    letter-spacing: .08em;
  }

  .nav-panel {
    position: fixed;
    top: var(--v-header-height);
    bottom: 0;
    left: 0;
    z-index: 5;
    width: min(320px, 86vw);
    padding: 24px 20px 28px;
    overflow-y: auto;
    background: linear-gradient(160deg, #0A1E3C 0%, #122A4A 70%, #1E3A5F 100%);
    border-right: 1px solid rgba(212, 175, 55, .3);
    visibility: hidden;
    pointer-events: none;
    box-shadow: none;
    transform: translateX(-102%);
    transition: transform .24s ease, visibility 0s linear .24s;
  }

  .site-header[data-open="true"] .nav-panel {
    visibility: visible;
    pointer-events: auto;
    box-shadow: 24px 0 40px rgba(0, 0, 0, .36);
    transform: translateX(0);
    transition: transform .24s ease, visibility 0s;
  }

  .nav-meta {
    margin-top: 0;
  }

  .nav-update-note {
    display: block;
  }

  .nav-aside {
    margin-top: 20px;
  }

  .header-progress {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    height: 3px;
    background: rgba(255, 255, 255, .12);
  }

  .header-progress-bar {
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--v-gold), #F2D77B);
    transform: scaleX(var(--progress));
    transform-origin: left;
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding-top: 40px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

@media (max-width: 640px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

@media (max-width: 480px) {
  .brand-sub {
    display: none;
  }

  .nav-toggle {
    width: 44px;
    padding: 0;
  }

  .nav-toggle-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

  .nav-update-note {
    display: none;
  }

  .nav-cta {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}