/* ==========================================================================
   Antigravity Course Offline Enhancements
   Pure offline styling, scrollspy TOC, reading bar, think boxes, quizzes
   ========================================================================== */

:root {
  --header-h: 0px !important;
  --sans: 'Microsoft YaHei', '微软雅黑', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', sans-serif !important;
  --serif: 'Microsoft YaHei', '微软雅黑', 'Noto Serif SC', 'Source Han Serif SC', 'Songti SC', Georgia, serif !important;
  --mono: 'JetBrains Mono', Consolas, 'Courier New', monospace;
}

/* 全站所有页面优先使用微软雅黑字体 */
html, body, .ai-llm-scope,
h1, h2, h3, h4, h5, h6,
p, span, a, div, li, dt, dd,
button, input, select, textarea,
.brand, .lesson-title, .vol-hero-title, .station-head h2,
.think-q, .takeaway, .recap, .quiz-item, .lesson-lede,
.vol-hero-desc, .vol-narrative p, .index-hero h1, .index-hero p {
  font-family: 'Microsoft YaHei', '微软雅黑', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', sans-serif !important;
}

/* 保护代码块与 KaTeX 公式符号字体 */
code, pre, kbd, samp, .font-mono, [class*="mono"], var {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace !important;
}

.katex, .katex * {
  font-family: KaTeX_Main, KaTeX_Math, 'Times New Roman', serif !important;
}
.katex .delimsizing, .katex .op-symbol {
  font-family: KaTeX_Size1, KaTeX_Size2, KaTeX_Size3, KaTeX_Size4, sans-serif !important;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--paper, #FAF6EE) !important;
  color: var(--ink, #1E2B38);
  overflow-x: clip;
}

.main-content {
  margin-top: 0 !important;
  padding-top: 54px !important;
  box-sizing: border-box !important;
}

/* ==========================================================================
   Site Top Header (AI基础知识学习指南)
   ========================================================================== */
.site-header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  height: 54px !important;
  background-color: var(--paper, #FAF6EE) !important;
  border-bottom: 1.5px solid var(--line, #DCD2BF) !important;
  box-shadow: 0 1px 6px rgba(30, 43, 56, 0.05) !important;
  z-index: 10000 !important;
  display: flex !important;
  align-items: center !important;
  box-sizing: border-box !important;
}

.site-header-inner {
  width: 100%;
  max-width: 1680px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}

.site-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-header .mobile-menu-btn {
  display: none;
}

.site-header-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.site-header-badge {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  color: #fff;
  background: var(--accent, #C0481E);
  padding: 2.5px 8px;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(192, 72, 30, 0.25);
}

.site-header-title {
  font-size: 17px;
  font-weight: 900;
  color: var(--ink, #1E2B38);
  letter-spacing: .02em;
}

.site-header-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav-link {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-soft, #5C6B79);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 4px;
  transition: all .15s ease;
}

.site-nav-link:hover {
  color: var(--accent, #C0481E);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.site-nav-link.active {
  color: var(--accent, #C0481E);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  font-weight: 700;
}

/* Reading Progress Bar */
.reading-bar {
  position: fixed !important;
  top: 53px !important;
  left: 0 !important;
  height: 3px !important;
  background: linear-gradient(90deg, #E0561F, #E58E26, #C0481E) !important;
  z-index: 10001 !important;
  width: 0%;
  transition: width 0.08s ease-out;
  box-shadow: 0 1px 4px rgba(224, 86, 31, 0.4);
}

/* Sticky Sidebars */
.ai-llm-scope .lesson-sidebar,
.lesson-sidebar {
  position: sticky !important;
  top: 54px !important;
  height: calc(100vh - 54px) !important;
  padding-top: 20px !important;
  box-sizing: border-box !important;
}

.ai-llm-scope .lesson-rail,
.lesson-rail {
  position: sticky !important;
  top: 54px !important;
  height: calc(100vh - 54px) !important;
  padding-top: 24px !important;
  box-sizing: border-box !important;
}

/* Content Visibility: Ensure all reveal elements are fully visible */
.reveal,
.station.reveal,
.lesson-meta.reveal,
.lesson-hero-figure.reveal,
.lesson-lede.reveal {
  opacity: 1 !important;
  transform: none !important;
}

/* "停一停 · 想一想" Think Box */
.think {
  position: relative;
  margin: 34px 0;
  border: 1.5px dashed color-mix(in srgb, var(--accent) 48%, transparent);
  background: var(--paper-card, #FFFDF8);
  padding: 24px 26px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.think:before {
  content: "停 一 停 · 想 一 想";
  position: absolute;
  top: -10px;
  left: 20px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--accent-deep, #C0481E);
  background: var(--paper-card, #FFFDF8);
  padding: 0 8px;
  font-weight: 700;
}

.think-q {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.9;
  color: var(--ink, #1E2B38);
}

.think-btn {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: #FFF8F0;
  background: var(--accent, #C0481E);
  border: 1px solid var(--accent, #C0481E);
  padding: 7px 18px;
  border-radius: 3px;
  cursor: pointer;
  transition: all .2s ease;
  user-select: none;
}

.think-btn:hover {
  background: var(--accent-warm, #D65A2E);
  border-color: var(--accent-warm, #D65A2E);
  transform: translateY(-1px);
}

.think.open .think-btn {
  display: none !important;
}

.think-answer {
  display: none;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--line, #DCD2BF);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink, #1E2B38);
  animation: thinkFadeIn 0.35s ease-out;
}

.think.open .think-answer {
  display: block !important;
}

@keyframes thinkFadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* "学习小测验" Quiz Component */
.quiz-item {
  margin: 26px 0;
  background: var(--paper-card, #FFFDF8);
  border: 1px solid var(--line, #DCD2BF);
  border-left: 3px solid var(--accent, #C0481E);
  border-radius: 4px;
  padding: 22px 24px;
}

.quiz-option {
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  text-align: left;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--accent, #C0481E);
  background: color-mix(in srgb, var(--accent-wash, rgba(192,72,30,0.08)) 50%, var(--paper, #FAF6EE));
}

.quiz-option.is-active {
  border-color: var(--accent, #C0481E) !important;
  background: color-mix(in srgb, var(--accent-wash, rgba(192,72,30,0.08)) 70%, var(--paper, #FAF6EE)) !important;
}

.quiz-option.is-active .quiz-option-key {
  border-color: var(--accent, #C0481E) !important;
  color: var(--accent, #C0481E) !important;
  background: color-mix(in srgb, var(--accent) 10%, #fff) !important;
}

.quiz-option.is-correct {
  border-color: #3E8F5A !important;
  background: color-mix(in srgb, #3E8F5A 12%, var(--paper, #FAF6EE)) !important;
  color: var(--ink) !important;
}

.quiz-option.is-correct .quiz-option-key {
  border-color: #3E8F5A !important;
  background: #3E8F5A !important;
  color: #fff !important;
}

.quiz-option.is-wrong {
  border-color: var(--accent, #C0481E) !important;
  background: color-mix(in srgb, var(--accent) 10%, var(--paper, #FAF6EE)) !important;
}

.quiz-option.is-wrong .quiz-option-key {
  border-color: var(--accent, #C0481E) !important;
  background: var(--accent, #C0481E) !important;
  color: #fff !important;
}

.quiz-submit {
  cursor: pointer;
  transition: all 0.2s ease;
}

.quiz-explain {
  animation: quizFadeIn 0.35s ease-out;
}

@keyframes quizFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Right Rail Table of Contents ("本课站点") */
.rail-nav {
  position: relative;
}

.rail-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--ink-faint, #93A0AC);
  margin-bottom: 14px;
  font-weight: 700;
}

.rail-list {
  list-style: none;
  position: relative;
  padding-left: 0;
  margin: 0;
}

.rail-list:before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1.5px;
  background: var(--line, #DCD2BF);
}

.rail-item {
  position: relative;
  padding: 7px 0 7px 20px;
}

.rail-dot {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper-card, #FFFDF8);
  border: 1.5px solid var(--line, #DCD2BF);
  transition: all .2s ease;
}

.rail-item a {
  font-size: 13px;
  color: var(--ink-faint, #93A0AC);
  transition: color .2s ease;
  display: block;
  line-height: 1.5;
  text-decoration: none;
}

.rail-item a:hover {
  color: var(--ink, #1E2B38);
}

.rail-item.active .rail-dot {
  background: var(--accent, #C0481E);
  border-color: var(--accent, #C0481E);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 25%, transparent);
}

.rail-item.active a {
  color: var(--accent, #C0481E);
  font-weight: 700;
}

.rail-item.passed .rail-dot {
  background: var(--ink-soft, #5C6B79);
  border-color: var(--ink-soft, #5C6B79);
}

.rail-item.passed a {
  color: var(--ink-soft, #5C6B79);
}

/* Mobile responsive menu bar */
.offline-top-nav {
  display: none;
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--paper-card, #FFFDF8);
  border-bottom: 1px solid var(--line, #DCD2BF);
  padding: 10px 16px;
  align-items: center;
  justify-content: space-between;
}

.mobile-menu-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line, #DCD2BF);
  background: var(--paper, #FAF6EE);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink, #1E2B38);
  cursor: pointer;
}

.mobile-lesson-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink, #1E2B38);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 60%;
}

@media (max-width: 1024px) {
  .site-header .mobile-menu-btn {
    display: inline-flex;
  }
  .site-header-nav {
    display: none;
  }
  .offline-top-nav {
    display: none !important;
  }
  .lesson-sidebar {
    position: fixed !important;
    left: -320px;
    top: 0 !important;
    width: 290px;
    z-index: 2000;
    background: var(--paper, #FAF6EE) !important;
    transition: left 0.25s ease-out;
    box-shadow: 4px 0 20px rgba(0,0,0,0.18);
  }
  .lesson-sidebar.mobile-open {
    left: 0 !important;
  }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    z-index: 1999;
  }
  .sidebar-backdrop.active {
    display: block;
  }
}

/* Hide all donation, sponsorship and online like elements */
.rail-donation,
.sim-donation-btn {
  display: none !important;
}


/* ==========================================================================
   Activation Function Plotly SVG Offline Render Fix (图 8-2 至 图 8-6)
   ========================================================================== */
.ai-llm-scope .fig-frame:has(.plotly-fig) {
  position: relative;
  overflow: hidden;
  background: #fffdf8;
  display: flex;
  justify-content: center;
}
.ai-llm-scope .plotly-fig {
  position: relative;
  width: 100%;
  max-width: 680px;
}
.ai-llm-scope .plotly-fig .plot-container {
  position: relative;
  width: 100%;
}
.ai-llm-scope .plotly-fig svg.main-svg {
  position: absolute !important;
  top: 0;
  left: 0;
  width: 100% !important;
  height: 100% !important;
}
.ai-llm-scope .plotly-fig svg.main-svg:first-child {
  position: relative !important;
  display: block !important;
}

/* ==========================================================================
   Fruit Lab SVG Typography Enhancements
   Ensure clean sans/monospace fallbacks (Consolas, Segoe UI, YaHei)
   ========================================================================== */
.ai-llm-scope .fruit-lab .neuron-svg text {
  font-family: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}
.ai-llm-scope .fruit-lab .neuron-svg text[font-family*="JetBrains"] {
  font-family: "JetBrains Mono", Consolas, "SF Mono", Menlo, Monaco, "Courier New", monospace !important;
}
.ai-llm-scope .fruit-lab .neuron-svg text[font-family*="Noto Serif"] {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif !important;
}

/* ==========================================================================
   Comprehensive Test (附3 综合测试) Custom Styles
   ========================================================================== */
.final-quiz-dashboard {
  background: var(--paper-card, #FFFDF9);
  border: 1.5px solid var(--line, #DCD2BF);
  border-radius: 8px;
  padding: 24px 28px;
  margin: 24px 0 36px;
  box-shadow: 0 4px 16px rgba(30, 43, 56, 0.04);
}
.final-quiz-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 36px;
  align-items: center;
  margin-bottom: 20px;
}
.final-quiz-stat-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.final-quiz-stat-label {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 600;
}
.final-quiz-stat-val {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
}
.final-quiz-progress-wrap {
  width: 100%;
  height: 8px;
  background: var(--paper, #FAF6EE);
  border: 1px solid var(--line, #DCD2BF);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 16px;
}
.final-quiz-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-warm));
  transition: width 0.3s ease;
}
.final-quiz-matrix {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}
.final-quiz-matrix-dot {
  width: 32px;
  height: 32px;
  border-radius: 4px;
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
}
.final-quiz-matrix-dot:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.final-quiz-matrix-dot.answered {
  background: color-mix(in srgb, var(--accent) 15%, var(--paper));
  border-color: var(--accent);
  color: var(--accent);
}
.final-quiz-matrix-dot.correct {
  background: #3E8F5A !important;
  border-color: #3E8F5A !important;
  color: #fff !important;
}
.final-quiz-matrix-dot.wrong {
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: #fff !important;
}
.final-quiz-score-banner {
  background: linear-gradient(135deg, #FFF8F0 0%, #FFF3E6 100%);
  border: 2px solid var(--accent);
  border-radius: 10px;
  padding: 32px 36px;
  margin: 28px 0 40px;
  box-shadow: 0 10px 30px rgba(192, 72, 30, 0.12);
  text-align: center;
  display: none;
  animation: bpxfade 0.4s ease;
}
.final-quiz-score-number {
  font-family: var(--mono);
  font-size: 56px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
  margin: 12px 0 8px;
}
.final-quiz-score-number span {
  font-size: 22px;
  color: var(--ink-soft);
  font-weight: 600;
}
.final-quiz-score-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 8px;
}
.final-quiz-score-desc {
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto 24px;
}
.final-quiz-score-badges {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.final-quiz-badge-pill {
  padding: 6px 18px;
  border-radius: 99px;
  font-size: 13.5px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.final-quiz-badge-pill.ok {
  background: color-mix(in srgb, #3E8F5A 15%, #fff);
  color: #2F7344;
  border: 1.5px solid #3E8F5A;
}
.final-quiz-badge-pill.no {
  background: color-mix(in srgb, var(--accent) 15%, #fff);
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.final-quiz-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}
.final-quiz-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}
.final-quiz-btn-primary {
  background: var(--accent);
  color: #fff !important;
  border: 1.5px solid var(--accent);
}
.final-quiz-btn-primary:hover:not(:disabled) {
  background: var(--accent-warm);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(192, 72, 30, 0.25);
}
.final-quiz-btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.final-quiz-btn-outline {
  background: var(--paper);
  color: var(--ink);
  border: 1.5px solid var(--line);
}
.final-quiz-btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.quiz-score-tag {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--paper));
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  padding: 2px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}
.quiz-source-link {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
}
.quiz-source-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}
.quiz-source-link a:hover {
  text-decoration: underline;
}
.final-quiz-floating-bar {
  position: fixed;
  bottom: 24px;
  right: 28px;
  z-index: 999;
  background: var(--paper-card);
  border: 1.5px solid var(--line);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-radius: 30px;
  padding: 8px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  backdrop-filter: blur(8px);
}
@media (max-width: 768px) {
  .final-quiz-floating-bar {
    left: 16px;
    right: 16px;
    bottom: 16px;
    border-radius: 12px;
    justify-content: space-between;
  }
}


/* ==========================================================================
   Lesson 01 Animal Vector Map Lab Polish & Delicacy ("绣花"精细打磨)
   ========================================================================== */
.animal-preset-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 10px 14px;
  background: var(--paper-deep, #F4EFE6);
  border: 1.5px solid var(--line, #DCD2BF);
  border-radius: 8px;
}
.animal-preset-bar .preset-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft, #5C6B79);
}
.animal-preset-bar .preset-chip {
  background: var(--paper-card, #FFFDF8);
  border: 1px solid var(--line, #DCD2BF);
  border-radius: 20px;
  padding: 5px 13px;
  font-size: 12.5px;
  color: var(--ink, #1E2B38);
  cursor: pointer;
  transition: all 0.18s ease;
  user-select: none;
  font-weight: 500;
}
.animal-preset-bar .preset-chip:hover {
  border-color: var(--accent, #C0481E);
  color: var(--accent, #C0481E);
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(192, 72, 30, 0.15);
}
.animal-preset-bar .preset-reset {
  background: color-mix(in srgb, var(--accent) 8%, var(--paper-card));
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  font-weight: 700;
  color: var(--accent, #C0481E);
  margin-left: auto;
}
.animal-preset-bar .preset-reset:hover {
  background: var(--accent, #C0481E);
  color: #fff;
  border-color: var(--accent, #C0481E);
}

.animal-detail-card {
  margin-top: 16px;
  padding: 14px 18px;
  background: var(--paper-card, #FFFDF8);
  border: 1.5px solid var(--line, #DCD2BF);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(30, 43, 56, 0.04);
}
.animal-calc-box {
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line, #DCD2BF);
}
.calc-box-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-soft, #5C6B79);
  margin-bottom: 6px;
}
.calc-box-formula code {
  font-family: var(--mono, 'JetBrains Mono', monospace);
  font-size: 12.5px;
  color: var(--ink, #1E2B38);
  background: var(--paper-deep, #F4EFE6);
  padding: 6px 10px;
  border-radius: 5px;
  display: block;
  overflow-x: auto;
  border: 1px solid var(--line, #DCD2BF);
}
.calc-box-formula code b {
  color: var(--accent, #C0481E);
  font-weight: 800;
}

.animal-ranking-bar {
  margin-top: 12px;
}
.ranking-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--ink-soft, #5C6B79);
  display: block;
  margin-bottom: 8px;
}
.ranking-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ranking-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 20px;
  border: 1px solid var(--line, #DCD2BF);
  background: var(--paper, #FAF6EE);
  font-size: 12.5px;
  color: var(--ink, #1E2B38);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
.ranking-chip:hover {
  border-color: var(--accent, #C0481E);
  transform: translateY(-1px);
}
.ranking-chip.top-match {
  background: color-mix(in srgb, var(--accent) 12%, var(--paper));
  border-color: var(--accent, #C0481E);
  color: var(--accent, #C0481E);
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(192, 72, 30, 0.2);
}
.ranking-chip .rank-badge {
  font-size: 11px;
  font-weight: 800;
  opacity: 0.85;
}
.ranking-chip .rank-dist {
  font-family: var(--mono, 'JetBrains Mono', monospace);
  font-size: 11.5px;
  background: rgba(0, 0, 0, 0.06);
  padding: 1px 6px;
  border-radius: 10px;
}
.ranking-chip.top-match .rank-dist {
  background: rgba(192, 72, 30, 0.18);
  color: var(--accent, #C0481E);
  font-weight: 700;
}

@keyframes dash-scroll {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -18;
  }
}
.dash-anim {
  animation: dash-scroll 1.2s linear infinite;
}

@keyframes mystery-pulse {
  0% {
    r: 16px;
    opacity: 0.6;
  }
  50% {
    r: 22px;
    opacity: 0.2;
  }
  100% {
    r: 16px;
    opacity: 0.6;
  }
}
.mystery-halo {
  animation: mystery-pulse 2s ease-in-out infinite;
  pointer-events: none;
}