/* Negentropy Lab · Signal Archive */

*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, p, ol, ul, figure, table { margin: 0; padding: 0; }

:root {
  --bg: #FAFAF7;
  --text: #1A1A1A;
  --text-primary: #1A1A1A;
  --text-secondary: #6B6B6B;
  --accent: #2C3E50;
  --border: #E5E3DC;
  --grid: #F0EEE7;
  --font-serif: Georgia, "Source Han Serif SC", "Noto Serif SC", "Songti SC", STSong, "SimSun", serif;
  --font-mono: "SF Mono", Monaco, Consolas, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", monospace;
  --font-sans-cn: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 960px; margin: 0 auto; padding: 40px; }
@media (min-width: 768px) { .wrap { padding: 80px; } }

/* Archived banner */
.archive-banner {
  background: var(--text);
  color: var(--bg);
  font-family: var(--font-sans-cn);
  font-size: 13px;
  text-align: center;
  padding: 10px;
  letter-spacing: 0.02em;
}

/* Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  padding-bottom: 60px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.brand-main-cn {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.brand-main-en {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 2px;
  letter-spacing: 0.03em;
}
.brand-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.site-nav {
  font-family: var(--font-sans-cn);
  font-size: 14px;
  color: var(--text-secondary);
  flex-shrink: 0;
  padding-top: 6px;
}
.site-nav a { margin-left: 22px; }
.site-nav a:hover { color: var(--text); }
.site-nav a.active { color: var(--text); }

/* Running state line */
.state-line {
  display: flex;
  gap: 40px;
  font-size: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 80px;
  flex-wrap: wrap;
}
.state-item { display: flex; align-items: baseline; gap: 10px; }
.state-label { color: var(--text-secondary); font-family: var(--font-sans-cn); }
.state-value { font-family: var(--font-mono); color: var(--text); font-variant-numeric: tabular-nums; }

/* Section rhythm */
section { margin-bottom: 100px; }

h1 { font-size: 28px; font-weight: 400; margin-bottom: 12px; letter-spacing: -0.01em; }
h2 { font-size: 20px; font-weight: 500; margin-bottom: 16px; margin-top: 48px; letter-spacing: -0.005em; }
h2:first-child { margin-top: 0; }
p { margin-bottom: 24px; }

.caption {
  font-family: var(--font-sans-cn);
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 20px;
}

/* Equity chart */
.chart-wrap { width: 100%; height: 500px; position: relative; }
#equityChart { width: 100% !important; height: 100% !important; display: block; }

/* Stats block */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 40px 60px;
  margin: 20px 0;
}
.stat { display: flex; flex-direction: column; gap: 10px; }
.stat-label { font-family: var(--font-serif); font-size: 13px; color: var(--text-secondary); }
.stat-value { font-family: var(--font-mono); font-size: 32px; font-weight: 400; line-height: 1; font-variant-numeric: tabular-nums; }

/* CSV link row */
.csv-link-row {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--text-secondary);
  text-align: right;
  margin-bottom: 1rem;
}
.csv-link-row a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.csv-link-row a:hover {
  color: var(--text-primary);
}
.csv-link-row .csv-link-sep { margin-left: 24px; }

/* Table */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.record-table {
  width: 100%;
  min-width: max-content;
  border-collapse: collapse;
  margin-top: 20px;
  font-size: 13px;
  table-layout: auto;
}
.record-table thead th {
  font-family: var(--font-sans-cn);
  font-weight: 400;
  font-size: 12px;
  color: var(--text-secondary);
  text-align: left;
  padding: 12px 10px 10px;
  border-bottom: 1px solid var(--border);
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}
.record-table td {
  padding: 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: baseline;
  white-space: nowrap;
}
.record-table td.num, .record-table th.num {
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}
.record-table td.text { font-family: var(--font-serif); }
.record-table td.link a { color: var(--text-secondary); }
.record-table td.link a:hover { color: var(--text); }
.record-table td .vs { color: var(--text-secondary); margin: 0 4px; }
.record-table td .ratio { color: var(--text-secondary); font-size: 0.85em; margin-left: 6px; }

.load-more {
  display: block;
  margin: 40px auto 0;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-sans-cn);
  font-size: 13px;
  padding: 10px 22px;
  cursor: pointer;
  letter-spacing: 0.04em;
}
.load-more:hover { color: var(--text); border-color: var(--text-secondary); }

/* Footer */
.site-footer {
  margin-top: 120px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
  gap: 20px;
}
.footer-brand .footer-brand-cn { color: var(--text); font-family: var(--font-serif); }
.footer-brand .footer-brand-en { color: var(--text-secondary); font-family: var(--font-serif); font-size: 12px; margin-top: 2px; }
.footer-links a { margin-left: 24px; }
.footer-links a:first-child { margin-left: 0; }
.footer-links a:hover { color: var(--text); }

/* Document pages */
.doc { max-width: 720px; margin: 0 auto; }
.doc p { margin-bottom: 28px; }
.doc ol, .doc ul { margin-bottom: 28px; padding-left: 28px; }
.doc li { margin-bottom: 12px; }
.doc h1 { margin-bottom: 40px; }
.doc strong { font-weight: 600; }
.doc code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  padding: 0 2px;
}
.doc .lede { color: var(--text-secondary); }

.protocol-preface {
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 40px;
}

.invariants li { margin-bottom: 0.8rem; }
.invariants .li-note {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.protocol-caveat {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-top: -8px;
  margin-bottom: 32px;
}

.protocol-footnote {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.about-signoff {
  margin-top: 3rem;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--text-secondary);
}

/* Protocol — formulas and stats table */
.formula-block {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 2px solid var(--border);
  background: transparent;
}
.formula-block p { margin: 0.4rem 0; }
.formula {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text-primary);
  padding-left: 1rem;
}

.stats-table {
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 15px;
}
.stats-table th, .stats-table td {
  padding: 6px 20px 6px 0;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.stats-table th {
  font-weight: 500;
  color: var(--text-secondary);
}
.stats-table td {
  font-family: var(--font-mono);
}

/* Loading */
.loading { font-family: var(--font-sans-cn); font-size: 13px; color: var(--text-secondary); padding: 40px 0; }

/* Signal header (on verify.html, loaded from ?id=) */
.sig-header {
  margin: 24px 0 32px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.sig-header .sh-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text);
  margin-bottom: 6px;
}
.sig-header .sh-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 14px;
}
.sig-header .sh-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.sig-header .sh-actions a {
  font-family: var(--font-sans-cn);
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.sig-header .sh-actions a:hover { color: var(--text); }
.sig-header .sh-empty {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--text-secondary);
}
.sig-header .sh-empty a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Decrypted content block (full CSV dump after verification) */
.decrypted-content {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.decrypted-content .dc-title {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--text);
  margin-bottom: 8px;
}
.decrypted-content .dc-note {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}
.dc-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--border);
}
.dc-table-full {
  width: 100%;
  min-width: max-content;
  border-collapse: collapse;
  font-size: 12.5px;
  table-layout: auto;
}
.dc-table-full thead th {
  font-family: var(--font-sans-cn);
  font-weight: 400;
  font-size: 11px;
  color: var(--text-secondary);
  text-align: left;
  padding: 10px 12px 8px 0;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.dc-table-full tbody td {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--text);
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--border);
  vertical-align: baseline;
  white-space: nowrap;
}
.dc-table-full tbody td.empty { color: var(--text-secondary); }
.dc-table-full tbody td.url a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.dc-table-full tbody td.url a:hover { color: var(--text-secondary); }
.dc-table-full tbody tr.current td {
  background: #F2EFE8;
  font-weight: 500;
}

/* Verify page */
.verify-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin: 30px 0;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.verify-controls label {
  font-family: var(--font-sans-cn);
  font-size: 13px;
  color: var(--text-secondary);
}
.verify-controls select {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  flex: 1;
  min-width: 240px;
  min-height: 44px;
}
.verify-controls button {
  font-family: var(--font-sans-cn);
  font-size: 14px;
  padding: 9px 22px;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--bg);
  cursor: pointer;
  min-height: 44px;
}
.verify-controls button:disabled {
  background: var(--border);
  border-color: var(--border);
  color: var(--text-secondary);
  cursor: not-allowed;
}
.verify-controls button:hover:not(:disabled) {
  background: var(--bg);
  color: var(--text);
}

.verify-step {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}
.verify-step .vs-name {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--text);
  min-width: 160px;
  flex-shrink: 0;
}
.verify-step .vs-icon {
  display: inline-block;
  width: 18px;
  font-family: var(--font-mono);
}
.verify-step.warn .vs-icon { color: #B8941F; }
.verify-step.error .vs-icon { color: var(--text); font-weight: 600; }
.verify-step .vs-detail {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-secondary);
  word-break: break-all;
  line-height: 1.7;
  flex: 1;
}

.verify-summary {
  margin-top: 50px;
  padding: 30px 0;
  border-top: 2px solid var(--text);
  border-bottom: 1px solid var(--border);
}
.verify-summary .vs-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--text);
  margin-bottom: 12px;
}
.verify-summary .vs-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
}

@media (max-width: 640px) {
  .verify-controls { flex-direction: column; align-items: stretch; }
  .verify-controls select { min-width: 0; width: 100%; }
  .verify-controls button { width: 100%; }
  .verify-step { flex-direction: column; gap: 6px; }
  .verify-step .vs-name { min-width: 0; }
  .formula-block { padding: 0.75rem 1rem; }
  .formula { font-size: 13px; padding-left: 0; }
  .stats-table { font-size: 13px; }
}

/* Responsive */
@media (max-width: 640px) {
  .site-header { flex-direction: column; gap: 24px; padding-bottom: 40px; }
  .site-nav a { margin-left: 0; margin-right: 20px; }
  .state-line { gap: 24px; margin-bottom: 60px; }
  section { margin-bottom: 70px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px 20px; }
  .stat-value { font-size: 24px; }
  .record-table { font-size: 12px; }
  .record-table td, .record-table thead th { padding: 8px 6px; }
  .chart-wrap { height: 340px; }
  .site-footer { flex-direction: column; }
  .footer-links a { margin-left: 0; margin-right: 20px; }
}