/* -------------------------------------------------------------
 * INTHON Website Styling: Clean Academic & Minimal Light Aesthetic
 * ------------------------------------------------------------- */

:root {
  --bg-color: #fafbfc;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --border-color: #e1e4e8;
  --border-color-hover: #d1d5da;
  
  --text-primary: #1b1f23;
  --text-secondary: #586069;
  --text-muted: #6a737d;
  
  --color-accent: #0969da;
  --color-accent-rgb: 9, 105, 218;
  --color-glow: rgba(9, 105, 218, 0.05);
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', Courier, monospace;
  
  --transition-smooth: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --border-radius: 8px;
}

/* Reset & Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 780px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1rem;
  border-radius: 8px;
}

.btn-primary {
  background-color: var(--text-primary);
  color: var(--bg-card);
  border: 1px solid var(--text-primary);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--text-primary);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(0, 0, 0, 0.02);
  border-color: var(--border-color-hover);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(250, 251, 252, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 64px;
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-symbol {
  color: var(--color-accent);
  font-size: 1.4rem;
  line-height: 1;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition-smooth);
}

.nav-links a:hover {
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  padding-top: 140px;
  padding-bottom: 60px;
  text-align: center;
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.badge-container {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.badge {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 600;
}

.badge-accent {
  background-color: rgba(9, 105, 218, 0.08);
  color: var(--color-accent);
  border: 1px solid rgba(9, 105, 218, 0.15);
}

.badge-neutral {
  background-color: rgba(0, 0, 0, 0.03);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.badge-success {
  background-color: rgba(34, 134, 58, 0.08);
  color: #22863a;
  border: 1px solid rgba(34, 134, 58, 0.15);
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  line-height: 1.15;
  max-width: 760px;
  margin-bottom: 16px;
}

.hero-subtitle {
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  max-width: 600px;
  margin-bottom: 32px;
  font-weight: 300;
}

/* Author Card */
.author-card {
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  margin-bottom: 36px;
  width: 100%;
  max-width: 600px;
  text-align: center;
}

.author-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
}

.author-name a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.author-name a:hover {
  color: var(--color-accent);
}

.author-title {
  font-size: 0.8rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.author-affiliation {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.author-lab {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hero-actions {
  display: flex;
  gap: 12px;
}

/* Quick Install Section */
.quick-install {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
  background-color: rgba(250, 251, 252, 0.5);
}

.install-toggle-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.install-toggle {
  display: inline-flex;
  background-color: #eaeef2;
  padding: 4px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
}

.toggle-btn {
  background: transparent;
  border: none;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 24px;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.toggle-btn:hover {
  color: var(--text-primary);
}

.toggle-btn.active {
  background-color: var(--bg-card);
  color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.install-content-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 24px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
  max-width: 680px;
  margin: 0 auto;
}

.install-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  text-align: left;
}

.code-container {
  position: relative;
  background-color: #f6f8fa;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 16px 50px 16px 16px;
  transition: var(--transition-smooth);
}

.code-container pre {
  margin: 0;
  overflow-x: auto;
}

.code-container code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-primary);
  white-space: pre;
  text-align: left;
  display: block;
}

.btn-copy-install {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  right: 12px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  padding: 0;
}

.btn-copy-install:hover {
  background-color: #f6f8fa;
  color: var(--text-primary);
  border-color: var(--border-color-hover);
}

.btn-copy-install.copied {
  color: #22863a;
  border-color: rgba(34, 134, 58, 0.3);
  background-color: rgba(34, 134, 58, 0.04);
}

/* Abstract Section */
.abstract {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
}

.section-title {
  font-size: 1.75rem;
  margin-bottom: 24px;
  text-align: center;
}

.abstract-content {
  font-size: 1rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 20px;
  text-align: justify;
}

/* Pipeline Section */
.pipeline-section {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.01);
}

.section-header {
  text-align: center;
  margin-bottom: 36px;
}

.section-description {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 8px auto 0;
}

.flow-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.flow-step {
  flex: 1;
  min-width: 170px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.flow-step:hover, .flow-step.active {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px var(--color-glow);
  transform: translateY(-2px);
}

.step-num {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-accent);
  opacity: 0.6;
  margin-bottom: 8px;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.step-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-bottom: 8px;
}

.step-file {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-accent);
}

.flow-arrow {
  color: var(--text-muted);
  font-size: 1.25rem;
  user-select: none;
}

@media (max-width: 900px) {
  .flow-container {
    flex-direction: column;
  }
  .flow-arrow {
    transform: rotate(90deg);
    margin: 4px 0;
  }
  .flow-step {
    width: 100%;
  }
}

.detail-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px 24px;
  border-radius: var(--border-radius);
  max-width: 800px;
  margin: 0 auto;
}

#detail-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--color-accent);
}

#detail-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.detail-file-badge {
  display: inline-block;
  margin-top: 12px;
  padding: 2px 8px;
  border-radius: 4px;
  background-color: rgba(0, 0, 0, 0.02);
  border: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
}

/* Playground Section */
.playground {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
}

.playground-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

@media (max-width: 960px) {
  .playground-layout {
    grid-template-columns: 1fr;
  }
}

/* Editor Pane */
.editor-pane {
  background-color: #f6f8fa;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.editor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #eaeef2;
  border-bottom: 1px solid var(--border-color);
  padding: 8px 12px;
}

.editor-tabs {
  display: flex;
  gap: 4px;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn:hover {
  color: var(--text-primary);
  background-color: rgba(0,0,0,0.03);
}

.tab-btn.active {
  color: var(--color-accent);
  background-color: #ffffff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.editor-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.editor-body {
  padding: 16px;
  flex: 1;
  min-height: 320px;
  background-color: #f6f8fa;
}

#code-display {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: #24292e;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}

.editor-footer {
  padding: 12px;
  background-color: #eaeef2;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
}

/* Console Pane */
.console-pane {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.console-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding: 10px 16px;
  background-color: #fafbfc;
}

.console-title {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.console-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.console-body {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #24292e;
  line-height: 1.5;
  flex: 1;
  overflow-y: auto;
  max-height: 380px;
  min-height: 320px;
  background-color: #ffffff;
}

.console-line {
  margin-bottom: 6px;
}

.system-line {
  color: var(--text-muted);
}

.compiler-line {
  color: #586069;
}

.run-line {
  color: #28a745;
}

.error-line {
  color: #d73a49;
}

.trace-json {
  display: block;
  background-color: #f6f8fa;
  border: 1px solid #e1e4e8;
  padding: 8px;
  border-radius: 4px;
  margin-top: 4px;
  color: #032f62;
  overflow-x: auto;
}

/* Grid layout */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Card Styles */
.innovations {
  padding: 80px 0;
  border-top: 1px solid var(--border-color);
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 24px;
  transition: var(--transition-smooth);
}

.card:hover {
  border-color: var(--border-color-hover);
  box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.card-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(9, 105, 218, 0.05);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.card-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Roadmap Timeline */
.roadmap {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 32px;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  width: 1px;
  height: 100%;
  background-color: var(--border-color);
  z-index: 1;
}

.timeline-item {
  display: flex;
  gap: 16px;
  position: relative;
  z-index: 2;
}

.timeline-badge {
  width: 50px;
  height: 28px;
  border-radius: 4px;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.timeline-item.active .timeline-badge {
  background-color: rgba(9, 105, 218, 0.08);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.timeline-content {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  border-radius: var(--border-radius);
  width: 100%;
}

.timeline-content h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.timeline-content p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Citation / BibTeX Section */
.citation-section {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
}

.citation-box {
  background-color: #f6f8fa;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 20px;
  position: relative;
}

.citation-box pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-primary);
  overflow-x: auto;
  white-space: pre-wrap;
}

.btn-copy {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 6px 12px;
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-copy:hover {
  background-color: #f6f8fa;
  border-color: var(--border-color-hover);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 30px 0;
  font-size: 0.8rem;
  color: var(--text-muted);
  background-color: rgba(0, 0, 0, 0.01);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.text-center {
  text-align: center;
}

/* Guide Page Styling */
.guide-layout {
  display: flex;
  margin-top: 64px;
  height: calc(100vh - 64px);
  overflow: hidden;
  background-color: var(--bg-color);
}

.guide-sidebar {
  width: 280px;
  background-color: var(--bg-card);
  border-right: 1px solid var(--border-color);
  padding: 30px 16px;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sidebar-item {
  padding: 12px 16px;
  border-radius: 6px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.sidebar-item:hover {
  background-color: rgba(9, 105, 218, 0.05);
  color: var(--color-accent);
}

.sidebar-item.active {
  background-color: rgba(9, 105, 218, 0.08);
  color: var(--color-accent);
  font-weight: 500;
}

.guide-content {
  flex: 1;
  padding: 50px;
  overflow-y: auto;
  background-color: var(--bg-card);
}

.guide-section {
  display: none;
  max-width: 800px;
  margin: 0 auto;
}

.guide-section.active {
  display: block;
  animation: guideFadeIn 0.25s ease-out;
}

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

.guide-title {
  font-size: 2rem;
  margin-bottom: 8px;
  font-family: var(--font-heading);
}

.guide-lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
  font-family: var(--font-body);
}

.doc-block {
  background-color: #f6f8fa;
  border-left: 4px solid var(--color-accent);
  padding: 16px 20px;
  border-radius: 0 6px 6px 0;
  margin-bottom: 24px;
}

.doc-block p {
  margin-bottom: 8px;
}
.doc-block p:last-child {
  margin-bottom: 0;
}

.guide-content h2 {
  font-size: 1.4rem;
  margin-top: 36px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 8px;
}

.guide-content h3 {
  font-size: 1.15rem;
  margin-top: 24px;
  margin-bottom: 12px;
}

.guide-content p, .guide-content li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.guide-content ul, .guide-content ol {
  margin-left: 20px;
  margin-bottom: 20px;
}

.guide-content code {
  font-family: var(--font-mono);
  background-color: #f6f8fa;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
}

.guide-content pre {
  background-color: #f6f8fa;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.guide-content pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
  font-size: 0.9rem;
}

.guide-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.guide-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 18px;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.guide-card:hover {
  border-color: var(--color-accent);
  background-color: rgba(9, 105, 218, 0.01);
  transform: translateY(-2px);
}

.guide-card h3 {
  font-size: 1rem;
  margin-top: 0;
  margin-bottom: 8px;
  color: var(--color-accent);
}

.guide-card p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

.guide-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
}

.guide-table th, .guide-table td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}

.guide-table th {
  background-color: #f6f8fa;
  font-weight: 600;
}

/* Spec & Technical Spec Page */
.spec-container {
  padding-top: 110px;
  padding-bottom: 60px;
}

.spec-header {
  text-align: center;
  margin-bottom: 50px;
}

.spec-title {
  font-size: 2.25rem;
  margin-bottom: 8px;
}

.spec-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.spec-section {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 40px;
  border-radius: 8px;
  margin-bottom: 30px;
}

.spec-section h2 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

.spec-section h3 {
  font-size: 1.15rem;
  margin-top: 24px;
  margin-bottom: 12px;
}

.spec-section p, .spec-section li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.spec-section code {
  font-family: var(--font-mono);
  background-color: #f6f8fa;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85rem;
}

.spec-section pre {
  background-color: #f6f8fa;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  margin-bottom: 24px;
}

.spec-section pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
  font-size: 0.9rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
}

.spec-table th, .spec-table td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}

.spec-table th {
  background-color: #f6f8fa;
  font-weight: 600;
}

.status-pass {
  color: #22863a;
  font-weight: 600;
}

.sandbox-diagram {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0;
}

.diagram-block {
  flex: 1;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: 8px;
}

.diagram-block.border-red {
  border-left: 4px solid #d73a49;
}

.diagram-block.border-green {
  border-left: 4px solid #28a745;
}

.diagram-block h4 {
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.diagram-block p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

.diagram-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
}

.benchmark-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
  margin: 24px 0;
}

.spec-img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}

.roadmap-timeline {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  padding-left: 20px;
}

.roadmap-timeline::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background-color: var(--border-color);
}

.roadmap-item {
  position: relative;
}

.roadmap-item::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-color);
  border: 2px solid var(--bg-card);
}

.roadmap-item:first-child::before {
  background-color: var(--color-accent);
}

.timeline-date {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.timeline-body h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.timeline-body p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .guide-layout {
    flex-direction: column;
    height: auto;
    overflow: visible;
  }
  .guide-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    height: auto;
  }
  .guide-content {
    padding: 24px;
  }
  .benchmark-grid {
    grid-template-columns: 1fr;
  }
  .sandbox-diagram {
    flex-direction: column;
  }
  .diagram-arrow {
    transform: rotate(90deg);
  }
}