:root {
  --indigo-950: #11143f;
  --indigo-800: #262c72;
  --indigo-650: #3c469d;
  --lime: #c9ff46;
  --lime-soft: #eaffae;
  --paper: #f7f8ed;
  --paper-deep: #ecefdc;
  --ink: #17192f;
  --muted: #62667a;
  --line: rgba(38, 44, 114, 0.18);
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(17, 20, 63, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --content: 1180px;
}

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

html {
  color-scheme: light;
  max-width: 100%;
  overflow-x: clip;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 0;
  max-width: 100%;
  overflow-x: clip;
  color: var(--ink);
  background:
    radial-gradient(circle at 100% 0, rgba(201, 255, 70, 0.22), transparent 28rem),
    linear-gradient(180deg, #fbfcf3 0%, var(--paper) 52%, #eef1dd 100%);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--indigo-800);
  text-decoration-color: rgba(38, 44, 114, 0.38);
  text-underline-offset: 0.2em;
}

a:hover,
a:focus-visible {
  color: var(--indigo-650);
  text-decoration-color: currentColor;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 3px;
}

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

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

code {
  overflow-wrap: anywhere;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.7rem;
  left: 0.7rem;
  padding: 0.6rem 0.9rem;
  color: var(--indigo-950);
  background: var(--lime);
  border-radius: 999px;
  transform: translateY(-160%);
}

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

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--white);
  background: var(--indigo-950);
}

.header-row,
.section-rail,
.site-footer,
.page-shell {
  width: min(calc(100% - 2rem), var(--content));
  margin-inline: auto;
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--white);
  font-size: 1rem;
  font-weight: 760;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}

.wordmark span {
  display: grid;
  place-items: center;
  width: 2.2rem;
  aspect-ratio: 1;
  border-radius: 50%;
  color: var(--indigo-950);
  background: var(--lime);
  font-size: 0.78rem;
}

.rail-button {
  display: none;
  min-height: 2.65rem;
  padding: 0.6rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 999px;
  color: var(--white);
  background: transparent;
  font: inherit;
  font-size: 0.88rem;
  cursor: pointer;
}

.section-rail {
  display: flex;
  gap: 0.5rem;
  padding-block: 0 1rem;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-width: thin;
}

.section-rail a {
  flex: 0 0 auto;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.86rem;
  text-decoration: none;
}

.section-rail a:hover,
.section-rail a:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

main {
  min-width: 0;
}

.page-shell {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4.5rem);
  padding-block: clamp(2.5rem, 6vw, 6.5rem);
}

.case-rail {
  position: sticky;
  top: 1.5rem;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: 1.25rem 0.8rem;
  border-left: 3px solid var(--lime);
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.case-number {
  color: var(--indigo-800);
  font-size: 2.1rem;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.page-content {
  min-width: 0;
}

.page-content > section,
.page-content > nav,
.page-content > figure,
.page-content > div:not(.page-intro) {
  margin-top: clamp(3rem, 7vw, 6rem);
}

.page-intro {
  max-width: 56rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--indigo-650);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--indigo-950);
  line-height: 1.16;
  text-wrap: balance;
}

h1 {
  max-width: 18ch;
  margin-bottom: 1.3rem;
  font-size: clamp(2.4rem, 6vw, 5.8rem);
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0.9rem;
  font-size: clamp(1.45rem, 3.5vw, 2.5rem);
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 0.45rem;
  font-size: 1.05rem;
}

p,
li {
  overflow-wrap: anywhere;
}

.lead {
  max-width: 49rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.03rem, 2.4vw, 1.3rem);
}

.search-map {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 1fr);
  gap: 2rem;
  padding: clamp(1.4rem, 4vw, 3.2rem);
  overflow: hidden;
  border-radius: var(--radius-lg);
  color: var(--white);
  background:
    linear-gradient(135deg, rgba(201, 255, 70, 0.12), transparent 42%),
    var(--indigo-950);
  box-shadow: var(--shadow);
}

.search-map::after {
  content: "";
  position: absolute;
  width: 19rem;
  aspect-ratio: 1;
  right: -7rem;
  bottom: -9rem;
  border: 1px solid rgba(201, 255, 70, 0.35);
  border-radius: 50%;
  box-shadow: 0 0 0 3rem rgba(201, 255, 70, 0.05), 0 0 0 6rem rgba(201, 255, 70, 0.035);
}

.search-map h2,
.search-map p {
  position: relative;
  z-index: 1;
  grid-column: 1 / -1;
  color: var(--white);
}

.search-map p {
  max-width: 50rem;
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
}

.query-node {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
}

.query-node span,
.query-node small {
  color: rgba(255, 255, 255, 0.62);
}

.query-node strong {
  color: var(--lime);
  font-size: clamp(1.5rem, 4vw, 2.6rem);
}

.result-nodes {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.55rem;
}

.result-nodes span {
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--lime);
  background: rgba(255, 255, 255, 0.07);
}

.map-routes {
  position: absolute;
  inset: 2rem 50% auto auto;
  opacity: 0.22;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-heading > span {
  display: inline-grid;
  place-items: center;
  flex: 0 0 2.5rem;
  aspect-ratio: 1;
  border-radius: 50%;
  color: var(--indigo-950);
  background: var(--lime);
  font-weight: 800;
  font-size: 0.82rem;
}

.section-heading p {
  max-width: 46rem;
  margin: 0;
  color: var(--muted);
}

.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 1rem;
}

.file-card {
  position: relative;
  min-width: 0;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.68);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.file-card:hover {
  transform: translateY(-3px);
  border-color: var(--indigo-650);
  box-shadow: 0 14px 36px rgba(17, 20, 63, 0.1);
}

.file-card h2 {
  margin-top: 2.2rem;
  font-size: 1.15rem;
}

.file-card h2 a {
  text-decoration: none;
}

.file-card p {
  color: var(--muted);
  font-size: 0.94rem;
}

.file-no {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--indigo-650);
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
}

.card-action {
  display: inline-block;
  margin-top: 0.7rem;
  color: var(--indigo-650);
  font-size: 0.8rem;
  font-weight: 760;
}

.timeline-panel,
.method-strip,
.record-box,
.identity-note,
.status-panel,
.brief-block,
.next-step {
  padding: clamp(1.3rem, 4vw, 2.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.63);
  box-shadow: 0 12px 40px rgba(17, 20, 63, 0.06);
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0.75rem;
  bottom: 0.75rem;
  left: 0.55rem;
  width: 2px;
  background: linear-gradient(var(--lime), var(--indigo-650));
}

.timeline li {
  position: relative;
  padding: 0 0 1.7rem 2.25rem;
}

.timeline li:last-child {
  padding-bottom: 0;
}

.timeline li::before {
  content: "";
  position: absolute;
  top: 0.35rem;
  left: 0;
  width: 1.15rem;
  aspect-ratio: 1;
  border: 3px solid var(--paper);
  border-radius: 50%;
  background: var(--indigo-650);
  box-shadow: 0 0 0 2px var(--lime);
}

.timeline p {
  margin: 0;
  color: var(--muted);
}

.numbered-list,
.author-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.numbered-list li,
.author-list li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0.25rem 1rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
}

.numbered-list li > span {
  grid-row: 1 / span 2;
  color: var(--indigo-650);
  font-family: ui-monospace, monospace;
}

.numbered-list a,
.author-list a {
  font-weight: 750;
}

.numbered-list p,
.author-list p {
  grid-column: 2;
  margin: 0.3rem 0 0;
  color: var(--muted);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.8fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.source-figure {
  min-width: 0;
  margin-inline: 0;
}

.source-figure img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--indigo-950);
  box-shadow: var(--shadow);
}

.source-figure figcaption {
  margin-top: 0.75rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.topic-chip {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
  padding: 1.1rem;
  border-radius: var(--radius-md);
  color: var(--white);
  background: var(--indigo-800);
  text-decoration: none;
}

.topic-chip span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.86rem;
}

.faq h3 {
  margin-top: 2rem;
}

.faq p {
  max-width: 52rem;
  color: var(--muted);
}

.rule-row,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.rule-row span,
.tag-row a {
  padding: 0.5rem 0.75rem;
  border-radius: 999px;
  background: var(--lime-soft);
  color: var(--indigo-950);
  font-size: 0.84rem;
  text-decoration: none;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.article-meta span {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.55);
  font-size: 0.8rem;
}

.record-box pre {
  max-width: 100%;
  padding: 1rem;
  overflow-x: auto;
  border-radius: 12px;
  color: var(--lime-soft);
  background: var(--indigo-950);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.copy-button {
  min-height: 2.75rem;
  padding: 0.65rem 1rem;
  border: 0;
  border-radius: 999px;
  color: var(--indigo-950);
  background: var(--lime);
  font: inherit;
  font-weight: 760;
  cursor: pointer;
}

.copy-status {
  margin-left: 0.75rem;
  color: var(--muted);
  font-size: 0.86rem;
}

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

.question-grid > div {
  min-width: 0;
  padding: 1rem;
  border-left: 3px solid var(--lime);
  background: var(--paper);
}

.related-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.related-nav a {
  display: flex;
  align-items: center;
  min-height: 5rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

.status-panel {
  border-color: var(--indigo-650);
  background: var(--indigo-950);
  color: var(--white);
}

.status-panel span {
  display: block;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-panel strong {
  display: block;
  margin-block: 0.4rem;
  color: var(--lime);
  font-size: clamp(2rem, 6vw, 4rem);
}

.status-panel p {
  margin-bottom: 0;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 1fr);
  gap: 2rem;
  padding-block: 3rem;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  gap: 0.45rem 0.8rem;
}

.site-footer nav a {
  font-size: 0.86rem;
}

.status-line {
  grid-column: 1 / -1;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}

@media (max-width: 820px) {
  .header-row,
  .section-rail,
  .site-footer,
  .page-shell {
    width: min(calc(100% - 1.25rem), var(--content));
  }

  .rail-button {
    display: inline-flex;
    align-items: center;
  }

  .section-rail {
    max-height: 3.6rem;
    transition: max-height 160ms ease;
  }

  .section-rail.is-open {
    max-height: 9rem;
    flex-wrap: wrap;
    overflow-y: auto;
  }

  .page-shell {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .case-rail {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    padding: 0.75rem 0;
    border-left: 0;
    border-bottom: 2px solid var(--lime);
    writing-mode: horizontal-tb;
  }

  .case-number {
    font-size: 1.25rem;
  }

  .search-map,
  .two-column,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .question-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 540px) {
  body {
    font-size: 0.98rem;
  }

  .header-row {
    min-height: 4rem;
  }

  .wordmark {
    font-size: 0.9rem;
  }

  .wordmark span {
    width: 1.9rem;
  }

  .rail-button {
    padding-inline: 0.72rem;
    font-size: 0.8rem;
  }

  h1 {
    font-size: clamp(2rem, 12vw, 3.2rem);
  }

  .search-map {
    grid-template-columns: 1fr;
  }

  .search-map h2,
  .search-map p {
    grid-column: 1;
  }

  .topic-grid,
  .related-nav {
    grid-template-columns: 1fr;
  }

  .numbered-list li,
  .author-list li {
    grid-template-columns: 2.2rem minmax(0, 1fr);
  }

  .copy-status {
    display: block;
    margin: 0.5rem 0 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}