:root {
  --color-cream: #F5F0E8;
  --color-ink: #2B2A26;
  --color-green: #1F6E5C;
  --color-blue: #1A3A5C;
  --color-gold: #C9A227;
  --color-red-orange: #D84A2A;
  --color-slate: #6A7A8A;
  --color-light-green: #6F9E8A;
  --font-heading: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Serif SC", "Source Han Serif", "Songti SC", serif;
  --font-index: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --rail-width: clamp(220px, 16vw, 280px);
  --header-h-mobile: 64px;
  --content-width: 1240px;
  --radius: 6px;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 10px 24px rgba(0,0,0,.06);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-cream);
  color: var(--color-ink);
  font-family: var(--font-body);
  line-height: 1.75;
}

ul, ol {
  margin: 0;
  padding: 0;
}

p {
  margin: 0 0 1rem;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.25;
  margin: 0 0 1rem;
  color: var(--color-ink);
}

a {
  color: var(--color-green);
  text-decoration-thickness: .08em;
  text-underline-offset: .12em;
}

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

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

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

.skip-link {
  position: fixed;
  top: .5rem;
  left: .5rem;
  z-index: 100;
  padding: .55rem .85rem;
  background: var(--color-gold);
  color: var(--color-ink);
  font-family: var(--font-heading);
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
  transform: translateY(-180%);
  transition: transform .2s ease;
}

.skip-link:focus {
  transform: translateY(0);
  outline-color: var(--color-ink);
}

main#main-content {
  width: 100%;
  min-width: 0;
  min-height: 60vh;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 3rem);
  background-image:
    linear-gradient(rgba(26,58,92,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,58,92,.045) 1px, transparent 1px);
  background-size: 32px 32px;
}

.content-shell {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  color: var(--color-cream);
  background:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px),
    radial-gradient(circle at 25% 10%, rgba(31,110,92,.5), transparent 45%),
    var(--color-blue);
  background-size: 24px 24px, 24px 24px, auto, auto;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: .75rem clamp(1rem, 3vw, 1.5rem);
  min-height: var(--header-h-mobile);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--color-green);
  border: 1px solid rgba(255,255,255,.3);
  box-shadow: 0 0 0 2px rgba(31,110,92,.3), 0 0 0 4px rgba(201,162,39,.35);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.3rem;
  line-height: 1;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 2px;
  border: 1px solid rgba(201,162,39,.45);
  border-radius: 6px;
}

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

.brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: .04em;
}

.brand-slogan {
  font-family: var(--font-index);
  font-size: .68rem;
  letter-spacing: .05em;
  color: rgba(255,255,255,.65);
  margin-top: .1rem;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 8px;
  appearance: none;
  cursor: pointer;
}

.nav-toggle-bar {
  width: 18px;
  height: 2px;
  background: currentColor;
  margin-inline: auto;
  transition: transform .25s ease, opacity .2s ease;
}

.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: absolute;
  top: 100%;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  background: rgba(16,38,62,.98);
  border-top: 2px solid var(--color-gold);
  border-bottom: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
  transition: opacity .3s ease, max-height .42s ease, visibility .3s;
}

.site-nav[data-open] {
  opacity: 1;
  visibility: visible;
  max-height: calc(100vh - var(--header-h-mobile));
  overflow-y: auto;
}

.nav-list {
  counter-reset: navIndex;
  list-style: none;
  margin: 0;
  padding: .5rem 0 .25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .7rem .9rem;
  color: rgba(255,255,255,.72);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: .95rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease;
}

.nav-link::before {
  counter-increment: navIndex;
  content: "0" counter(navIndex) " — ";
  font-family: var(--font-index);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--color-gold);
  opacity: .8;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(255,255,255,.08);
  color: #fff;
}

.nav-link[aria-current="page"] {
  color: #fff;
  background: linear-gradient(90deg, rgba(31,110,92,.8), rgba(31,110,92,.35));
  border-left-color: var(--color-gold);
}

.nav-cta {
  margin: .75rem .9rem 1rem;
}

.header-meta {
  display: none;
}

.scroll-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 1;
  width: var(--scroll-progress, 0%);
  height: 3px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--color-gold), var(--color-green));
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  border-radius: 999px;
  padding: .65rem 1.1rem;
  border: 1px solid transparent;
  font-family: var(--font-heading);
  font-size: .9rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, box-shadow .2s ease;
}

.btn:hover {
  box-shadow: 0 6px 16px rgba(0,0,0,.14);
}

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

.btn-primary {
  background: var(--color-gold);
  color: var(--color-ink);
  border-color: #A9851F;
}

.btn-primary:hover {
  background: #DDB53A;
  color: var(--color-ink);
}

.btn-secondary {
  background: transparent;
  color: var(--color-light-green);
  border-color: currentColor;
}

.btn-secondary:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}

.site-footer {
  background:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px),
    radial-gradient(circle at 10% 0%, rgba(31,110,92,.5), transparent 35%),
    var(--color-blue);
  background-size: 28px 28px, 28px 28px, auto, auto;
  color: rgba(255,255,255,.8);
  border-top: 3px solid var(--color-gold);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.1fr;
  gap: 2.5rem;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 4vw, 2rem) 1.5rem;
}

.footer-brand .brand {
  margin-bottom: 1rem;
}

.footer-about {
  color: rgba(255,255,255,.82);
  font-size: .95rem;
}

.footer-trust {
  font-family: var(--font-index);
  font-size: .72rem;
  line-height: 1.8;
  color: rgba(255,255,255,.55);
  border-left: 2px solid var(--color-gold);
  padding-left: .75rem;
}

.footer-title {
  font-family: var(--font-heading);
  font-size: .85rem;
  color: var(--color-gold);
  letter-spacing: .15em;
  text-transform: uppercase;
  margin-bottom: .75rem;
  padding-bottom: .5rem;
  border-bottom: 1px solid rgba(255,255,255,.15);
}

.footer-links {
  list-style: none;
  columns: 2;
  column-gap: 1rem;
}

.footer-links a {
  color: rgba(255,255,255,.72);
  text-decoration: none;
  line-height: 2.1;
}

.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: .2em;
}

.footer-contact-list {
  list-style: none;
  margin: 0 0 1rem;
}

.footer-contact-list li {
  display: flex;
  gap: .75rem;
  align-items: baseline;
  padding: .45rem 0;
  border-bottom: 1px dashed rgba(255,255,255,.14);
}

.footer-contact-list .label {
  min-width: 3.5em;
  font-family: var(--font-index);
  font-size: .7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-light-green);
}

.footer-contact-list span:last-child {
  color: rgba(255,255,255,.85);
}

.footer-contact-btn {
  margin-top: 1.25rem;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 1rem clamp(1rem, 4vw, 2rem);
  border-top: 1px solid rgba(255,255,255,.12);
  font-family: var(--font-index);
  font-size: .75rem;
  color: rgba(255,255,255,.55);
}

.footer-icp {
  color: rgba(255,255,255,.68);
}

.footer-law {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-law a {
  color: rgba(255,255,255,.72);
  text-decoration: none;
}

.footer-law a:hover {
  color: #fff;
  text-decoration: underline;
}

.chapter {
  margin-bottom: var(--space-6);
}

.chapter-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .75rem 1rem;
  padding-bottom: .75rem;
  border-bottom: 2px solid var(--color-ink);
  margin-bottom: 1.5rem;
}

.chapter-index {
  font-family: var(--font-index);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1;
  color: var(--color-red-orange);
  letter-spacing: -.03em;
}

.chapter-title {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 800;
  margin: 0;
}

.chapter-sub {
  margin-left: auto;
  font-family: var(--font-index);
  font-size: .78rem;
  color: var(--color-slate);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.card {
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(43,42,38,.14);
  border-radius: var(--radius);
  padding: var(--space-4);
  box-shadow: var(--shadow);
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: .75rem;
}

.glass-panel {
  background: rgba(255,255,255,.38);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.65);
  border-radius: var(--radius);
  padding: var(--space-4);
}

.research-card {
  background:
    linear-gradient(150deg, rgba(31,110,92,.10), transparent 50%),
    rgba(255,255,255,.72);
  border: 1px solid rgba(31,110,92,.28);
  border-radius: var(--radius);
  padding: var(--space-4);
}

.research-summary {
  font-size: .95rem;
  color: rgba(43,42,38,.82);
}

.evidence-boundary {
  display: block;
  margin-top: 1rem;
  padding: .9rem 1rem;
  background: rgba(201,162,39,.07);
  border-left: 3px solid var(--color-gold);
  font-family: var(--font-index);
  font-size: .8rem;
  color: #4A452C;
}

.term-list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  margin: 1rem 0 0;
}

.term-list li {
  font-family: var(--font-index);
  font-size: .72rem;
  border: 1px solid rgba(26,58,92,.25);
  border-radius: 999px;
  padding: .2rem .55rem;
  color: var(--color-blue);
}

.further-reading {
  margin-top: 1rem;
  font-size: .85rem;
}

.further-reading a {
  color: var(--color-green);
}

.data-panel {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(160deg, rgba(31,110,92,.55), transparent 55%),
    var(--color-blue);
  color: var(--color-cream);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.data-panel::before {
  content: "DATA /";
  position: absolute;
  top: .6rem;
  right: .75rem;
  font-family: var(--font-index);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--color-gold);
  opacity: .8;
}

.data-title {
  font-family: var(--font-heading);
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-light-green);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding-right: 3rem;
}

.stat {
  margin-top: .75rem;
  padding-left: .75rem;
  border-left: 2px solid rgba(201,162,39,.55);
}

.stat-value {
  display: block;
  font-family: var(--font-index);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-family: var(--font-heading);
  font-size: .74rem;
  color: rgba(255,255,255,.68);
  letter-spacing: .08em;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .2rem .7rem;
  background: rgba(31,110,92,.1);
  border: 1px solid rgba(31,110,92,.2);
  color: var(--color-green);
  border-radius: 999px;
  font-family: var(--font-heading);
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.tag-new {
  background: rgba(111,158,138,.18);
  color: var(--color-green);
  border-color: rgba(111,158,138,.3);
}

.tag-warn {
  background: rgba(216,74,42,.12);
  color: var(--color-red-orange);
  border-color: rgba(216,74,42,.3);
}

.image-field {
  position: relative;
  display: block;
  width: 100%;
  border-radius: var(--radius);
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(31,110,92,.12), rgba(26,58,92,.18));
  border: 1px dashed rgba(31,110,92,.4);
}

.image-field::before {
  content: "";
  display: block;
  padding-bottom: 56.25%;
}

.image-field img,
.image-field > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blueprint-bg {
  background-image:
    linear-gradient(rgba(26,58,92,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,58,92,.08) 1px, transparent 1px);
  background-size: 28px 28px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  margin: 0 0 1.5rem;
  font-family: var(--font-index);
  font-size: .78rem;
}

.breadcrumbs li + li::before {
  content: "/";
  margin-right: .5rem;
  color: var(--color-slate);
}

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

.breadcrumbs a[aria-current="page"] {
  color: var(--color-ink);
  font-weight: 700;
}

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

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s ease;
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

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

@media (min-width: 960px) {
  main#main-content {
    margin-left: var(--rail-width);
  }

  .site-footer {
    margin-left: var(--rail-width);
  }

  .site-header {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--rail-width);
    height: 100vh;
    border-right: 1px solid rgba(255,255,255,.08);
    border-bottom: 0;
  }

  .header-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    height: 100%;
    min-height: auto;
    padding: 1.5rem 0 0;
  }

  .brand {
    padding: 0 1.25rem 1.5rem;
    margin-bottom: .5rem;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav,
  .site-nav[data-open] {
    position: static;
    display: flex;
    flex: 1;
    flex-direction: column;
    max-height: none;
    overflow: visible;
    opacity: 1;
    visibility: visible;
    background: transparent;
    border: 0;
    box-shadow: none;
    transition: none;
    padding: 0 .75rem;
  }

  .nav-list {
    padding: .25rem 0;
  }

  .nav-cta {
    margin: auto .5rem 1rem;
  }

  .header-meta {
    display: block;
    margin-top: 1rem;
    padding: .85rem 1.25rem 1.25rem;
    border-top: 1px solid rgba(255,255,255,.14);
    font-family: var(--font-index);
    font-size: .68rem;
    letter-spacing: .08em;
    line-height: 1.9;
    color: rgba(255,255,255,.5);
  }

  .scroll-progress {
    width: 3px;
    height: var(--scroll-progress, 0%);
    top: 0;
    bottom: auto;
    right: 0;
    left: auto;
    background: linear-gradient(180deg, var(--color-gold), var(--color-light-green));
  }
}

@media (max-width: 959.98px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-links {
    columns: 2;
  }

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

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

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

  .site-nav {
    transition: none;
  }

  .skip-link {
    transition: none;
  }
}