:root {
  --snow: #F8FAFC;
  --plateau: #0F4C81;
  --sky: #3A8FB7;
  --gold: #C9A227;
  --frost: #E2E8F0;
  --navy: #1A2F42;
  --gray: #94A3B8;
  --lake: #2C8C99;
  --sunset: #E07A5F;
  --ink: #0B243B;
  --font-display: "Noto Serif Tibetan", "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --container: 1280px;
  --ease: cubic-bezier(0, 0, 0.2, 1);
}

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--navy);
  background: var(--snow);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--plateau);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--sky);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

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

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

button {
  font-family: inherit;
  cursor: pointer;
}

#main-content:focus {
  outline: none;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 900;
  background: var(--plateau);
  color: var(--snow);
  padding: 12px 24px;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(11, 36, 59, 0.3);
  transition: top 0.3s var(--ease);
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--sunset));
  z-index: 200;
  pointer-events: none;
}

.site-header {
  background: var(--snow);
}

.header-ribbon {
  background: var(--ink);
  color: var(--frost);
  text-align: center;
  padding: 8px 16px;
}

.ribbon-text {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--frost);
}

.header-main {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 250, 252, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--frost);
}

.header-shell {
  max-width: var(--container);
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 8px rgba(15, 76, 129, 0.2));
}

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

.brand-name strong {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  color: var(--plateau);
  letter-spacing: 0.04em;
}

.brand-name em {
  font-style: normal;
  font-size: 13px;
  color: var(--gray);
  letter-spacing: 0.08em;
}

.main-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: inline-block;
  padding: 9px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--navy);
  border-radius: var(--radius-pill);
  transition: color 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.nav-link:hover {
  color: var(--plateau);
  background: var(--frost);
}

.nav-link[aria-current="page"] {
  background: var(--plateau);
  color: var(--snow);
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(15, 76, 129, 0.3);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-cta {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--plateau);
  border: none;
  border-radius: var(--radius-pill);
  padding: 10px 18px;
  color: var(--snow);
  font-size: 14px;
  font-weight: 600;
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}

.nav-toggle:hover {
  background: var(--ink);
  transform: translateY(-1px);
}

.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 18px;
}

.nav-toggle-icon span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

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

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

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

.header-skyline {
  position: relative;
  height: 28px;
  background: linear-gradient(180deg, var(--snow), var(--frost));
  overflow: hidden;
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

.header-skyline::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--plateau);
  clip-path: polygon(
    0% 100%, 0% 55%,
    4% 35%, 8% 62%, 12% 30%, 16% 58%, 20% 20%,
    25% 45%, 30% 28%, 35% 55%, 40% 24%, 44% 12%,
    50% 32%, 55% 20%, 60% 50%, 65% 26%, 72% 18%,
    78% 38%, 82% 24%, 88% 48%, 94% 32%, 100% 52%,
    100% 100%
  );
}

.header-skyline::after {
  content: "";
  position: absolute;
  top: 6px;
  right: 14%;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.6;
}

.site-footer {
  background: var(--navy);
  color: var(--frost);
  position: relative;
  margin-top: 0;
}

.footer-topline {
  height: 10px;
  background: repeating-linear-gradient(
    90deg,
    var(--gold) 0,
    var(--gold) 32px,
    var(--sky) 32px,
    var(--sky) 48px,
    var(--plateau) 48px,
    var(--plateau) 80px
  );
}

.footer-shell {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding: 56px 0 40px;
}

.footer-col h3 {
  color: var(--gold);
  font-size: 16px;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--snow);
  text-decoration: none;
  margin-bottom: 20px;
}

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

.footer-brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.35));
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  color: var(--snow);
  letter-spacing: 0.02em;
}

.footer-statement {
  font-size: 15px;
  line-height: 1.75;
  color: var(--frost);
  max-width: 42em;
  margin-bottom: 20px;
}

.footer-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--gray);
  margin: 0;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-links a {
  color: var(--snow);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.3s var(--ease), padding-left 0.3s var(--ease);
}

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

.footer-address {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
  margin: 24px 0 0;
  padding-top: 20px;
  border-top: 1px solid rgba(226, 232, 240, 0.15);
}

.footer-bottom {
  border-top: 1px solid rgba(226, 232, 240, 0.15);
  background: var(--ink);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.footer-copyright,
.footer-icp {
  font-size: 13px;
  color: var(--gray);
  margin: 0;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 48px;
  height: 48px;
  border: 2px solid var(--gold);
  border-radius: var(--radius-pill);
  background: var(--plateau);
  color: var(--snow);
  font-size: 20px;
  line-height: 1;
  box-shadow: 0 8px 24px rgba(15, 76, 129, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s var(--ease), background 0.3s var(--ease);
  z-index: 150;
}

.to-top:hover {
  background: var(--ink);
}

.to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.content-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--plateau);
  color: var(--snow);
}

.btn-primary:hover {
  background: var(--ink);
  color: var(--snow);
  box-shadow: 0 8px 24px rgba(15, 76, 129, 0.3);
}

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

.btn-outline:hover {
  background: var(--plateau);
  color: var(--snow);
}

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

.btn-gold:hover {
  background: #b8921e;
  color: var(--ink);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.4);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  font-size: 14px;
  color: var(--gray);
}

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

.breadcrumb li + li::before {
  content: "›";
  color: var(--gray);
  margin: 0 6px;
  font-size: 18px;
  line-height: 1;
}

.breadcrumb a {
  color: var(--sky);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--plateau);
  text-decoration: underline;
}

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.card-grid .is-span-3 { grid-column: span 3; }
.card-grid .is-span-4 { grid-column: span 4; }
.card-grid .is-span-6 { grid-column: span 6; }
.card-grid .is-span-8 { grid-column: span 8; }
.card-grid .is-span-12 { grid-column: span 12; }

.data-card {
  background: var(--snow);
  border: 1px solid var(--frost);
  border-radius: var(--radius-xl);
  padding: 24px;
  position: relative;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.data-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(11, 36, 59, 0.1);
  border-color: var(--sky);
}

.data-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.data-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--navy);
  margin: 0;
}

.data-card-value {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  color: var(--plateau);
  line-height: 1.2;
  margin: 0;
}

.data-card-foot {
  font-size: 13px;
  color: var(--gray);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--frost);
}

.pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--plateau);
  background: var(--snow);
  border: 1px solid var(--gold);
  border-radius: var(--radius-pill);
}

.pill-tag.is-lake {
  color: var(--lake);
  border-color: var(--lake);
  background: rgba(44, 140, 153, 0.08);
}

.pill-tag.is-sunset {
  color: var(--sunset);
  border-color: var(--sunset);
  background: rgba(224, 122, 95, 0.08);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 12px;
}

.section-kicker::before {
  content: "";
  width: 28px;
  height: 3px;
  border-radius: 3px;
  background: var(--gold);
}

.section-title {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 900;
  color: var(--plateau);
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin: 0 0 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--gray);
  max-width: 56ch;
  margin: 0 0 32px;
}

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--frost);
  aspect-ratio: 4 / 3;
}

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

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

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

@media (max-width: 1023px) {
  .header-shell {
    gap: 8px;
  }

  .brand-name strong {
    font-size: 20px;
  }

  .brand-name em {
    font-size: 11px;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
  }

  .header-cta {
    display: none;
  }

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

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(340px, 88vw);
    height: 100vh;
    height: 100dvh;
    background: var(--snow);
    z-index: 120;
    transform: translateX(100%);
    transition: transform 0.32s var(--ease);
    box-shadow: -16px 0 48px rgba(11, 36, 59, 0.2);
    overflow-y: auto;
    padding: 96px 20px 32px;
    margin-left: 0;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .nav-link {
    display: block;
    font-size: 18px;
    padding: 14px 20px;
    text-align: left;
  }

  .nav-link[aria-current="page"] {
    background: var(--plateau);
  }

  body.nav-open {
    overflow: hidden;
  }

  body.nav-open::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(11, 36, 59, 0.4);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    z-index: 110;
  }

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

  .footer-col-brand {
    grid-column: span 2;
  }

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

@media (max-width: 767px) {
  .header-ribbon {
    font-size: 12px;
    padding: 6px 12px;
  }

  .header-shell {
    padding: 8px 16px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-name strong {
    font-size: 18px;
  }

  .brand-name em {
    font-size: 10px;
  }

  .header-skyline {
    height: 20px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    padding: 40px 0 32px;
  }

  .footer-col-brand {
    grid-column: span 1;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .content-container {
    padding: 24px 16px;
  }

  .section-title {
    font-size: 32px;
  }

  .data-card-value {
    font-size: 28px;
  }

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

  .to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  .to-top {
    transition: opacity 0.01ms !important;
  }
}