/* QuantTester Methodology & Documentation Design System */
@import url('https://fonts.googleapis.com/css2?family=Geist+Mono:wght@100..900&family=Geist:wght@100..900&display=swap');

:root {
  color-scheme: dark light;
  --font-sans: "Geist", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, "PingFang SC", "Microsoft YaHei", monospace;

  /* Dark Theme (Default) */
  --bg: #09090b;
  --panel: #141417;
  --panel-muted: #1c1c22;
  --panel-hover: #22222a;
  --text: #fafafa;
  --muted: #94a3b8;
  --line: #27272a;
  --primary: #8b5cf6;
  --primary-hover: #7c3aed;
  --accent: #a855f7;
  --emerald: #10b981;
  --emerald-bg: rgba(16, 185, 129, 0.1);
  --emerald-border: rgba(16, 185, 129, 0.25);
  --rose: #f43f5e;
  --rose-bg: rgba(244, 63, 94, 0.1);
  --rose-border: rgba(244, 63, 94, 0.25);
  --amber: #f59e0b;
  --amber-bg: rgba(245, 158, 11, 0.1);
  --amber-border: rgba(245, 158, 11, 0.25);
  --blue: #3b82f6;
  --blue-bg: rgba(59, 130, 246, 0.1);
  --blue-border: rgba(59, 130, 246, 0.25);
}

html[data-theme="light"],
body.light-theme {
  color-scheme: light;
  --bg: #f4f5f8;
  --panel: #ffffff;
  --panel-muted: #f8fafc;
  --panel-hover: #f1f5f9;
  --text: #09090b;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #7c3aed;
  --primary-hover: #6d28d9;
  --accent: #9333ea;
  --emerald: #059669;
  --emerald-bg: rgba(5, 150, 105, 0.08);
  --emerald-border: rgba(5, 150, 105, 0.2);
  --rose: #e11d48;
  --rose-bg: rgba(225, 29, 72, 0.08);
  --rose-border: rgba(225, 29, 72, 0.2);
  --amber: #d97706;
  --amber-bg: rgba(217, 119, 6, 0.08);
  --amber-border: rgba(217, 119, 6, 0.2);
  --blue: #2563eb;
  --blue-bg: rgba(37, 99, 235, 0.08);
  --blue-border: rgba(37, 99, 235, 0.2);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.011em;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* 顶部导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(9, 9, 11, 0.85);
  border-bottom: 1px solid var(--line);
}
html[data-theme="light"] .site-header {
  background-color: rgba(244, 245, 248, 0.85);
}

.header-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}
.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: #ffffff;
  border: 1px solid rgba(16, 185, 129, 0.3);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
html[data-theme="dark"] .brand-icon, .dark .brand-icon {
  background: #09090b;
  border: 1px solid rgba(16, 185, 129, 0.3);
  box-shadow: 0 0 10px -2px rgba(16, 185, 129, 0.3);
}
.brand-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.brand-logo-dark {
  display: none;
}
.brand-logo-light {
  display: block;
}
html[data-theme="dark"] .brand-logo-dark, .dark .brand-logo-dark {
  display: block;
}
html[data-theme="dark"] .brand-logo-light, .dark .brand-logo-light {
  display: none;
}
.brand-name {
  font-weight: 800;
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: -0.02em;
}
.brand-name span {
  color: var(--primary);
}
.brand-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 10px;
  margin-left: 2px;
  display: none;
}
@media (min-width: 640px) {
  .brand-badge { display: inline-block; }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.nav-link:hover {
  color: var(--text);
  background-color: var(--panel-muted);
  border-color: var(--line);
}
.nav-btn-highlight {
  color: var(--text);
  background-color: var(--panel);
  border-color: var(--line);
}
.nav-btn-highlight:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.theme-btn {
  background: var(--panel);
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}
.theme-btn:hover {
  color: var(--text);
  border-color: var(--text);
}

/* 主内容主体 */
main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

/* 头部 Hero 区域 */
.hero-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--panel-muted);
  border: 1px solid var(--line);
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 16px;
}
.hero-title {
  font-size: clamp(28px, 4.5vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  color: var(--text);
}
.hero-lead {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.7;
  color: var(--muted);
  margin: 0 0 20px;
  max-width: 90ch;
}
.hero-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--muted);
}
.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-meta-item b {
  color: var(--text);
}

/* 快速锚点导航目录 */
.toc-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
  padding: 16px;
  border-radius: 14px;
  background-color: var(--panel);
  border: 1px solid var(--line);
}
.toc-pill {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  background-color: var(--panel-muted);
  border: 1px solid var(--line);
  padding: 4px 10px;
  border-radius: 6px;
  transition: all 0.15s ease;
}
.toc-pill:hover {
  color: var(--text);
  border-color: var(--primary);
  background-color: var(--panel-hover);
}

/* 正文排版 */
article h2 {
  font-size: clamp(20px, 3vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 48px 0 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 80px;
}
article h3 {
  font-size: clamp(16px, 2.5vw, 19px);
  font-weight: 650;
  color: var(--text);
  margin: 28px 0 12px;
  scroll-margin-top: 80px;
}
article p, article li {
  color: var(--text);
  font-size: 15px;
  line-height: 1.8;
  max-width: 86ch;
}
article p {
  margin: 0 0 16px;
}
article li {
  margin: 8px 0;
}
article ul {
  padding-left: 20px;
  margin: 0 0 20px;
}

/* 引用块 / 强调卡片 */
blockquote {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--primary);
  background-color: var(--panel);
  border-radius: 0 12px 12px 0;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
blockquote p {
  margin: 0;
  color: var(--text);
  font-weight: 500;
}

/* 熔断高危呼出框 */
.callout-circuit-breaker {
  border-left-color: var(--rose);
  background-color: var(--rose-bg);
  border-color: var(--rose-border);
}
.callout-circuit-breaker strong {
  color: var(--rose);
}

/* 表格矩阵卡片容器 */
.table-scroll {
  overflow-x: auto;
  margin: 24px 0 32px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background-color: var(--panel);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
  line-height: 1.6;
  text-align: left;
}
caption {
  display: none;
}
th {
  background-color: var(--panel-muted);
  color: var(--muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  vertical-align: top;
}
tr:last-child td {
  border-bottom: none;
}
tr:hover td {
  background-color: var(--panel-hover);
}

/* 8 大规则表格专用 */
.table-rules {
  min-width: 740px;
}
.table-rules th:nth-child(1), .table-rules td:nth-child(1) { width: 16%; min-width: 120px; font-weight: 600; }
.table-rules th:nth-child(2), .table-rules td:nth-child(2) { width: 44%; min-width: 280px; }
.table-rules th:nth-child(3), .table-rules td:nth-child(3) { width: 16%; min-width: 110px; font-family: var(--font-mono); }
.table-rules th:nth-child(4), .table-rules td:nth-child(4) { width: 24%; min-width: 170px; color: var(--muted); font-size: 12px; }

/* 积分徽章 */
.pts-plus {
  display: inline-block;
  background-color: var(--emerald-bg);
  color: var(--emerald);
  border: 1px solid var(--emerald-border);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 11px;
  font-family: var(--font-mono);
}
.pts-minus {
  display: inline-block;
  background-color: var(--rose-bg);
  color: var(--rose);
  border: 1px solid var(--rose-border);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 11px;
  font-family: var(--font-mono);
}
.pts-neutral {
  display: inline-block;
  background-color: var(--blue-bg);
  color: var(--blue);
  border: 1px solid var(--blue-border);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 11px;
  font-family: var(--font-mono);
}
.pts-veto {
  display: inline-block;
  background-color: var(--amber-bg);
  color: var(--amber);
  border: 1px solid var(--amber-border);
  padding: 2px 7px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 11px;
  font-family: var(--font-mono);
}

/* 链接样式 */
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  text-decoration: underline;
  color: var(--primary-hover);
}

code {
  font-family: var(--font-mono);
  font-size: 12px;
  background-color: var(--panel-muted);
  border: 1px solid var(--line);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
}

/* 全局多列现代化 Footer 体系 */
.site-footer {
  margin-top: 64px;
  border-top: 1px solid var(--line);
  background-color: var(--panel);
  padding: 48px 0 32px;
}
.site-footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}
@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
  }
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.65;
  margin: 0;
  max-width: 340px;
}
.footer-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-family: var(--font-mono);
  background-color: var(--emerald-bg);
  color: var(--emerald);
  border: 1px solid var(--emerald-border);
  padding: 4px 10px;
  border-radius: 9999px;
  width: fit-content;
}
.footer-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--emerald);
}
.footer-col h4 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
  margin: 0 0 14px;
  font-family: var(--font-mono);
}
.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links-list li {
  margin: 0;
}
.footer-links-list a, .footer-btn {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: color 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.footer-links-list a:hover, .footer-btn:hover {
  color: var(--text);
  text-decoration: none;
}
.footer-bottom-bar {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 12px;
  color: var(--muted);
}
@media (min-width: 640px) {
  .footer-bottom-bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}
.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 通用全屏模态框 (HTML/CSS Standalone Modal) */
.footer-modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 100;
  background-color: rgba(9, 9, 11, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.footer-modal-overlay.active {
  display: flex;
}
.footer-modal-dialog {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  width: 100%;
  max-width: 680px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.5);
  animation: modalIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--panel-muted);
}
.modal-title {
  font-size: 15px;
  font-weight: 700;
  margin: 0;
  color: var(--text);
}
.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 6px;
}
.modal-close-btn:hover {
  background-color: var(--panel);
  color: var(--text);
}
.modal-body {
  padding: 22px;
  overflow-y: auto;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}
.modal-body h3, .modal-body h4 {
  color: var(--text);
  margin: 16px 0 6px;
}
.modal-body h3:first-child, .modal-body h4:first-child {
  margin-top: 0;
}
.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: flex-end;
  background-color: var(--panel-muted);
}
.modal-action-btn {
  background-color: var(--primary);
  color: #fff;
  border: none;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}
.modal-action-btn:hover {
  background-color: var(--primary-hover);
}