:root {
  color-scheme: light dark;
  --bg: #f6f8fa;
  --bg-deep: #f6f8fa;
  --paper: #ffffff;
  --paper-strong: #ffffff;
  --paper-muted: #f6f8fa;
  --line: #d0d7de;
  --line-strong: #afb8c1;
  --ink: #1f2328;
  --muted: #59636e;
  --link: #0969da;
  --link-hover: #0550ae;
  --accent: #1a7f37;
  --accent-soft: #dafbe1;
  --shadow: 0 1px 3px rgba(31, 35, 40, 0.08), 0 8px 24px rgba(140, 149, 159, 0.12);
  --shadow-soft: 0 1px 2px rgba(31, 35, 40, 0.06);
  --focus-ring: 0 0 0 3px rgba(9, 105, 218, 0.18);
  --radius-xl: 12px;
  --radius-lg: 8px;
  --radius-md: 6px;
}

* {
  box-sizing: border-box;
}



body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  transition: background-color 0.16s ease, color 0.16s ease;
}

a {
  color: var(--link);
}

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

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: transparent;
  opacity: 0;
  transform: translateZ(0); /* 强制 GPU 硬件加速 */
}

.backdrop {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: none;
  opacity: 0;
  transform: translateZ(0); /* 强制 GPU 硬件加速 */
}

.site-shell {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow,
.panel-kicker,
.reader-label {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.panel-heading h2 {
  margin: 0;
  line-height: 1.1;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.hero-summary {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

.site-footer {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.footer-links {
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.12s ease;
}

.footer-links a:hover {
  text-decoration: underline;
}

.divider {
  margin: 0 10px;
  color: var(--line-strong);
}

.disclaimer-note {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.6;
  margin: 0 auto;
  max-width: 800px;
  opacity: 0.85;
}

.hero-status {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  padding: 5px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper);
  box-shadow: none;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
}

a.status-chip {
  transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease, box-shadow 0.12s ease;
}

a.status-chip:hover,
button.status-chip:hover {
  background: var(--paper-muted);
  border-color: var(--line-strong);
}

button.status-chip {
  cursor: pointer;
  padding: 6px 10px;
}

button.status-chip svg {
  display: block;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.reader-panel {
  background: transparent;
  padding: 0;
}

.reader-intro {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.reader-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  letter-spacing: 0;
  font-weight: 400;
  text-transform: none;
  line-height: 1.5;
}

.date-switcher {
  position: relative;
}

.date-switcher-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.date-nav-btn,
.date-current-btn {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  box-shadow: none;
  transition: background-color 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}

.date-nav-btn,
.date-current-btn {
  cursor: pointer;
}

.date-nav-btn:hover,
.date-current-btn:hover {
  border-color: var(--line-strong);
  background: var(--paper-muted);
}

.date-nav-btn:disabled,
.date-current-btn:disabled {
  cursor: default;
  opacity: 0.6;
}

.date-nav-btn {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.date-current-btn {
  min-width: 0;
  flex: 0 1 auto;
  border-radius: var(--radius-md);
  padding: 0 12px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-align: left;
}

.date-switcher-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.date-current-value {
  min-width: 0;
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.date-current-caret {
  flex: 0 0 auto;
  color: var(--muted);
  transition: transform 0.12s ease;
}

.date-switcher.open .date-current-caret {
  transform: rotate(180deg);
}

.date-switcher-popover {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: min(280px, 100%);
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--paper);
  box-shadow: var(--shadow);
  z-index: 20;
}

.date-switcher-popover[hidden] {
  display: none;
}

.date-switcher-popover-head {
  display: grid;
  gap: 4px;
  padding: 4px 4px 10px;
}

.date-switcher-title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
}

.date-switcher-list {
  display: grid;
  gap: 4px;
  max-height: min(54vh, 360px);
  overflow-y: auto;
  padding-right: 2px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.date-switcher-list::-webkit-scrollbar {
  width: 8px;
}

.date-switcher-list::-webkit-scrollbar-track {
  background: transparent;
}

.date-switcher-list::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: var(--line-strong);
  border: 2px solid transparent;
  background-clip: padding-box;
}

.date-switcher-list::-webkit-scrollbar-thumb:hover {
  background: #8c959f;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.date-switcher-empty {
  padding: 18px 14px;
  color: var(--muted);
  text-align: center;
}

.date-switcher-item {
  width: 100%;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: transparent;
  padding: 10px 12px;
  display: block;
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.date-switcher-item:hover,
.date-switcher-item:focus-visible {
  background: var(--paper-muted);
  border-color: var(--line);
}

.date-switcher-item.active {
  background: var(--accent-soft);
  border-color: rgba(26, 127, 55, 0.22);
}

.date-switcher-item-date {
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--ink);
}

.report-card {
  min-height: 520px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--paper-strong);
  box-shadow: var(--shadow-soft);
  transition: background-color 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.report-content {
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.16s ease, transform 0.16s ease;
  overflow-wrap: break-word;
  word-break: break-word;
}

.report-content.ready {
  opacity: 1;
  transform: translateY(0);
}

.report-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.loading-state {
  display: grid;
  gap: 14px;
}

.loading-state.hidden {
  display: none;
}

.loading-line {
  height: 12px;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(208, 215, 222, 0.4), rgba(175, 184, 193, 0.9), rgba(208, 215, 222, 0.4));
  background-size: 180% 100%;
  animation: shimmer 1.2s linear infinite;
}

.loading-line.wide {
  width: min(74%, 520px);
}

.loading-line.narrow {
  width: min(42%, 280px);
}

.empty-state,
.error-state {
  padding: 36px 20px;
  text-align: center;
  color: var(--muted);
}

.report-content h1,
.report-content h2,
.report-content h3 {
  margin-top: 1.5em;
  margin-bottom: 0.75em;
  color: var(--ink);
  line-height: 1.25;
}

.report-content h1 {
  margin-top: 0;
  font-size: 2rem;
  font-weight: 600;
}

.report-content h2 {
  padding-bottom: 0.3em;
  font-size: 1.5rem;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}

.report-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
}

.report-content p,
.report-content li,
.report-content blockquote {
  font-size: 1rem;
  line-height: 1.75;
}

.report-content ul,
.report-content ol {
  padding-left: 1.4em;
}

.report-content li + li {
  margin-top: 0.45em;
}

.report-content blockquote {
  margin: 1.2em 0;
  padding: 0 0 0 16px;
  border-left: 4px solid var(--line);
  color: var(--muted);
}

.report-content code {
  padding: 0.16em 0.35em;
  border-radius: 4px;
  background: rgba(175, 184, 193, 0.2);
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 0.94em;
}

.report-content pre {
  overflow: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper-muted);
  color: var(--ink);
}

.report-content pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.report-content hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 2em 0;
}

.report-content table {
  display: block;
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.report-content th,
.report-content td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  text-align: left;
}

.report-content th {
  background: var(--paper-muted);
}

.report-content a {
  color: var(--link);
  text-decoration: none;
}

.report-content a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

@keyframes shimmer {
  from {
    background-position: 180% 0;
  }
  to {
    background-position: -20% 0;
  }
}

@media (max-width: 980px) {
  .site-shell {
    padding: 24px 16px 40px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    display: grid;
  }

  .hero-status {
    justify-content: flex-start;
  }

  .date-current-btn {
    flex: 1 1 auto;
    min-width: 0;
  }

  .date-switcher-popover {
    width: 100%;
    max-width: none;
  }

  .report-card {
    padding: 20px;
  }
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 2.4rem;
  }

  .report-content h1 {
    font-size: 1.8rem;
  }

  .report-content p,
  .report-content li,
  .report-content blockquote {
    font-size: 0.98rem;
    line-height: 1.82;
  }
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d1117;
  --bg-deep: #0d1117;
  --paper: #161b22;
  --paper-strong: #161b22;
  --paper-muted: #0d1117;
  --line: #30363d;
  --line-strong: #484f58;
  --ink: #f0f6fc;
  --muted: #9198a1;
  --link: #58a6ff;
  --link-hover: #79c0ff;
  --accent: #3fb950;
  --accent-soft: rgba(63, 185, 80, 0.16);
  --shadow: 0 8px 24px rgba(1, 4, 9, 0.35);
  --shadow-soft: 0 0 0 1px rgba(48, 54, 61, 0.4);
  --focus-ring: 0 0 0 3px rgba(47, 129, 247, 0.35);
}

[data-theme="dark"] body::before {
  opacity: 0;
}

[data-theme="dark"] .backdrop {
  background: none;
  opacity: 0;
}

[data-theme="dark"] body {
  background: var(--bg);
}

[data-theme="dark"] .site-footer {
  border-top: 1px solid var(--line);
}

[data-theme="dark"] .divider {
  color: var(--line-strong);
}

[data-theme="dark"] .status-chip {
  border-color: var(--line);
  background: var(--paper);
}

[data-theme="dark"] a.status-chip:hover,
[data-theme="dark"] button.status-chip:hover {
  border-color: var(--line-strong);
  background: #1f2630;
}

[data-theme="dark"] .date-nav-btn,
[data-theme="dark"] .date-current-btn,
[data-theme="dark"] .date-switcher-popover {
  border-color: var(--line);
  background: var(--paper);
}

[data-theme="dark"] .date-nav-btn:hover,
[data-theme="dark"] .date-current-btn:hover {
  border-color: var(--line-strong);
  background: #1f2630;
}

[data-theme="dark"] .date-switcher-item:hover,
[data-theme="dark"] .date-switcher-item:focus-visible {
  background: #1f2630;
  border-color: var(--line);
}

[data-theme="dark"] .date-switcher-item.active {
  background: rgba(63, 185, 80, 0.14);
  border-color: rgba(63, 185, 80, 0.24);
}

[data-theme="dark"] .date-switcher-list {
  scrollbar-color: var(--line-strong) transparent;
}

[data-theme="dark"] .date-switcher-list::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border: 2px solid transparent;
  background-clip: padding-box;
}

[data-theme="dark"] .date-switcher-list::-webkit-scrollbar-thumb:hover {
  background: #6e7681;
  border: 2px solid transparent;
  background-clip: padding-box;
}

[data-theme="dark"] .report-card {
  box-shadow: var(--shadow-soft);
}

[data-theme="dark"] .loading-line {
  background:
    linear-gradient(90deg, rgba(48, 54, 61, 0.6), rgba(110, 118, 129, 0.95), rgba(48, 54, 61, 0.6));
  background-size: 180% 100%;
}

[data-theme="dark"] .report-content blockquote {
  border-left-color: var(--line);
  color: var(--muted);
}

[data-theme="dark"] .report-content code {
  background: rgba(110, 118, 129, 0.32);
}

[data-theme="dark"] .report-content th {
  background: #0d1117;
}

[data-theme="dark"] .report-content pre {
  background: #0d1117;
  color: var(--ink);
}

/* Search Modal */
.search-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 10vh;
  opacity: 1;
  will-change: opacity, visibility;
  transition: opacity 0.16s ease, visibility 0.16s ease;
}

.search-modal[hidden] {
  opacity: 0;
  visibility: hidden;
  display: flex;
  pointer-events: none;
}

.search-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(13, 17, 23, 0.48);
}

.search-container {
  position: relative;
  width: 100%;
  max-width: 640px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: 80vh;
  transform: translateY(0);
  will-change: transform;
  transition: transform 0.16s ease;
  margin: 0 16px;
}

.search-modal[hidden] .search-container {
  transform: translateY(-8px);
}

.search-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.search-icon {
  color: var(--muted);
  flex-shrink: 0;
  margin-right: 12px;
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1rem;
  color: var(--ink);
  outline: none;
  min-width: 0;
}

.search-input::placeholder {
  color: var(--muted);
  opacity: 0.6;
}

.close-search-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.close-search-btn:hover {
  background: var(--paper-muted);
  border-color: var(--line);
  color: var(--ink);
}

.search-results {
  overflow-y: auto;
  padding: 0;
  flex: 1;
}

.search-placeholder {
  padding: 32px 20px;
  text-align: center;
  color: var(--muted);
}

.search-result-item {
  display: block;
  padding: 16px 20px;
  text-decoration: none;
  color: inherit;
  box-shadow: inset 2px 0 0 transparent;
  transition: background-color 0.12s ease, box-shadow 0.12s ease;
}

.search-result-item + .search-result-item {
  border-top: 1px solid var(--line);
}

.search-result-item:hover,
.search-result-item:focus-visible {
  background: var(--paper-muted);
  box-shadow: inset 2px 0 0 var(--accent);
}

.search-result-title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 6px 0;
  color: var(--link);
}

.search-result-snippet {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-result-snippet mark {
  background: #fff8c5;
  color: inherit;
  border-radius: 2px;
  padding: 0 2px;
}

[data-theme="dark"] .search-result-snippet mark {
  background: rgba(187, 128, 9, 0.35);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .report-content,
  .search-modal[hidden] .search-container,
  .date-switcher.open .date-current-caret {
    transform: none;
  }
}