/* ==========================================================================
   cam (CodeAgent Memory) Web Introduction Stylesheet
   Designed strictly per DESIGN.md specifications
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fira+Code:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+SC:wght@400;500;700&display=swap');

:root {
  /* Background Hierarchy */
  --bg: #070B14;
  --bg-secondary: #0B1120;
  --surface: #0E172A;
  --surface-alt: #131E36;
  --surface-hover: #182544;
  --surface-card: rgba(14, 23, 42, 0.75);

  /* Borders & Dividers */
  --border: rgba(96, 230, 255, 0.14);
  --border-hover: rgba(96, 230, 255, 0.4);
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-active: #60E6FF;

  /* Typography Colors */
  --text: #F3F7FC;
  --text-secondary: #94A3B8;
  --text-tertiary: #64748B;
  --text-muted: #475569;

  /* Accents & Brand Palette */
  --accent: #60E6FF;
  --accent-hover: #8DEEFF;
  --accent-purple: #6C7CFF;
  --accent-gradient: linear-gradient(135deg, #60E6FF 0%, #6C7CFF 100%);
  --accent-gradient-alt: linear-gradient(135deg, #6C7CFF 0%, #B265F0 100%);
  --accent-glow: rgba(96, 230, 255, 0.25);

  /* RGB variants for flexible alpha */
  --bg-rgb: 7, 11, 20;
  --surface-rgb: 14, 23, 42;
  --accent-rgb: 96, 230, 255;
  --accent-purple-rgb: 108, 124, 255;

  /* Semantics */
  --success: #10B981;
  --success-rgb: 16, 185, 129;
  --warning: #F59E0B;
  --warning-rgb: 245, 158, 11;
  --error: #EF4444;
  --error-rgb: 239, 68, 68;
  --code-bg: #080D1A;

  /* Layout */
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Dynamic Mouse Coordinates for Spotlight */
  --mouse-x: -999px;
  --mouse-y: -999px;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  background-color: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Cyber Grid & Ambient Glow */
.bg-ambient-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, black 20%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 20%, black 20%, transparent 80%);
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
}

.glow-orb-1 {
  top: -150px;
  left: 20%;
  width: 600px;
  height: 500px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
}

.glow-orb-2 {
  top: 15%;
  right: -100px;
  width: 550px;
  height: 450px;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
}

.glow-orb-3 {
  bottom: 10%;
  left: 10%;
  width: 500px;
  height: 400px;
  background: radial-gradient(circle, rgba(96, 230, 255, 0.4) 0%, transparent 70%);
  opacity: 0.2;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', 'Noto Sans SC', sans-serif;
  color: var(--text);
  font-weight: 700;
}

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.code-font {
  font-family: 'Fira Code', monospace;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(7, 11, 20, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all 0.3s ease;
}

.site-header.scrolled {
  background: rgba(7, 11, 20, 0.92);
  border-bottom-color: var(--border);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: #08111F;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(96, 230, 255, 0.2);
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: 12px;
  background: rgba(96, 230, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(96, 230, 255, 0.3);
  font-family: 'Fira Code', monospace;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: var(--accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #070B14;
  border: 1px solid var(--accent);
  box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.3);
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 25px rgba(var(--accent-rgb), 0.55);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-hover);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-github {
  background: #111927;
  color: var(--text);
  border: 1px solid var(--border-subtle);
}

.btn-github:hover {
  background: #1A263D;
  border-color: var(--border-hover);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
}

/* Hero Section */
.hero-section {
  padding: 90px 0 60px 0;
  text-align: center;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(14, 23, 42, 0.85);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-family: 'Fira Code', monospace;
  color: var(--accent);
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(96, 230, 255, 0.1);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 36px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

/* One-Sentence Prompt Install Box */
.install-box-wrapper {
  max-width: 820px;
  margin: 0 auto 60px auto;
  text-align: left;
}

.install-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  padding: 0 6px;
}

.install-box-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.install-box-desc {
  font-size: 0.8rem;
  color: var(--accent);
}

.install-prompt-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  cursor: pointer;
  transition: all 0.25s ease;
}

.install-prompt-box:hover {
  border-color: var(--accent);
  background: var(--surface-alt);
  box-shadow: 0 10px 35px rgba(96, 230, 255, 0.15);
}

.install-prompt-text {
  font-family: 'Fira Code', monospace;
  font-size: 0.86rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.copy-button {
  background: rgba(96, 230, 255, 0.1);
  color: var(--accent);
  border: 1px solid rgba(96, 230, 255, 0.3);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.copy-button:hover {
  background: var(--accent);
  color: #070B14;
}

/* Hero Simulator Duel Window (爆点 1) */
.hero-duel-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  text-align: left;
  margin-top: 10px;
}

.terminal-card {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
}

.terminal-card.active-cam {
  border-color: var(--border);
  box-shadow: 0 20px 50px rgba(96, 230, 255, 0.15);
}

.terminal-card-header {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-dot.red { background: #FF5F56; }
.terminal-dot.yellow { background: #FFBD2E; }
.terminal-dot.green { background: #27C93F; }

.terminal-title {
  font-size: 0.78rem;
  font-family: 'Fira Code', monospace;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.terminal-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'Fira Code', monospace;
}

.terminal-badge.danger {
  background: rgba(239, 68, 68, 0.15);
  color: #F87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.terminal-badge.success {
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.terminal-body {
  padding: 18px 20px;
  font-family: 'Fira Code', monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-secondary);
  flex: 1;
}

.terminal-line {
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.terminal-prompt {
  color: var(--accent);
  user-select: none;
}

.terminal-cmd {
  color: var(--text);
  font-weight: 600;
}

.terminal-comment {
  color: var(--text-tertiary);
  font-style: italic;
}

.terminal-metric-pill {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.pill-red {
  background: rgba(239, 68, 68, 0.2);
  color: #FCA5A5;
}

.pill-green {
  background: rgba(16, 185, 129, 0.2);
  color: #6EE7B7;
}

.terminal-footer-summary {
  padding: 12px 18px;
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
}

/* Marquee / Headline Stats Bar */
.marquee-section {
  padding: 28px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(11, 17, 32, 0.6);
  overflow: hidden;
  position: relative;
}

.marquee-content {
  display: flex;
  gap: 48px;
  animation: scrollMarquee 35s linear infinite;
  width: max-content;
}

.marquee-content:hover {
  animation-play-state: paused;
}

@keyframes scrollMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.stat-value {
  font-family: 'Fira Code', monospace;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent);
}

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

.stat-divider {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--text-tertiary);
  opacity: 0.5;
}

/* Section Header Structure */
.section-wrapper {
  padding: 110px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-eyebrow {
  font-family: 'Fira Code', monospace;
  font-size: 0.82rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: 2.35rem;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto;
}

/* Interactive Dual-Plane Playground (爆点 2) */
.playground-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.playground-nav-tabs {
  display: flex;
  background: rgba(7, 11, 20, 0.8);
  border-bottom: 1px solid var(--border);
}

.playground-tab {
  flex: 1;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  transition: all 0.25s ease;
}

.playground-tab:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.playground-tab.active {
  color: var(--accent);
  background: rgba(96, 230, 255, 0.05);
  border-bottom-color: var(--accent);
}

.playground-tab-icon {
  width: 20px;
  height: 20px;
}

.plane-content-pane {
  display: none;
  padding: 32px;
}

.plane-content-pane.active {
  display: block;
}

/* Plane 1: Code Graph Explorer Grid */
.graph-explorer-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
}

.file-tree-panel {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: 'Fira Code', monospace;
  font-size: 0.84rem;
}

.tree-header {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tree-node-item {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
  transition: all 0.2s ease;
}

.tree-node-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.tree-node-item.selected {
  background: rgba(96, 230, 255, 0.12);
  color: var(--accent);
  border: 1px solid rgba(96, 230, 255, 0.3);
}

.tree-badge {
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-tertiary);
}

.code-slice-panel {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.slice-header {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: 'Fira Code', monospace;
  font-size: 0.82rem;
}

.slice-viewer {
  padding: 20px;
  font-family: 'Fira Code', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-x: auto;
  flex: 1;
}

.slice-footer-metrics {
  padding: 12px 20px;
  background: rgba(7, 11, 20, 0.8);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
}

/* Plane 2: Memory Tree & RRF Simulator */
.memory-sim-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.query-input-bar {
  display: flex;
  gap: 12px;
}

.query-input {
  flex: 1;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  color: var(--text);
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s ease;
}

.query-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 15px rgba(96, 230, 255, 0.2);
}

.query-sample-chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.sample-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  padding: 5px 14px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.sample-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(96, 230, 255, 0.05);
}

.memory-results-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.memory-card {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  transition: all 0.2s ease;
}

.memory-card:hover {
  border-color: var(--border);
  transform: translateX(4px);
}

.memory-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.memory-id {
  font-family: 'Fira Code', monospace;
  font-size: 0.82rem;
  color: var(--accent);
}

.memory-score-tag {
  font-family: 'Fira Code', monospace;
  font-size: 0.78rem;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(96, 230, 255, 0.1);
  border: 1px solid rgba(96, 230, 255, 0.25);
  color: var(--accent);
}

.memory-summary {
  font-weight: 600;
  font-size: 0.96rem;
  margin-bottom: 8px;
  color: var(--text);
}

.memory-body {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.memory-meta-footer {
  display: flex;
  gap: 16px;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  font-family: 'Fira Code', monospace;
}

/* Bento Spotlight Grid (爆点 3) */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.bento-card {
  position: relative;
  background: var(--surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(450px circle at var(--mouse-x, -999px) var(--mouse-y, -999px), rgba(96, 230, 255, 0.12), transparent 45%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.bento-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.bento-card:hover::before {
  opacity: 1;
}

.col-span-4 { grid-column: span 4; }
.col-span-6 { grid-column: span 6; }
.col-span-8 { grid-column: span 8; }
.col-span-12 { grid-column: span 12; }

.bento-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(96, 230, 255, 0.08);
  border: 1px solid rgba(96, 230, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 20px;
}

.bento-icon-wrapper.purple {
  background: rgba(108, 124, 255, 0.08);
  border-color: rgba(108, 124, 255, 0.2);
  color: var(--accent-purple);
}

.bento-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.bento-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex: 1;
}

.bento-visual-preview {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* 4-Step Workflow Section */
.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.workflow-step-card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  position: relative;
  transition: all 0.25s ease;
}

.workflow-step-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
}

.step-number {
  font-family: 'Fira Code', monospace;
  font-size: 1.8rem;
  font-weight: 800;
  color: rgba(96, 230, 255, 0.25);
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.step-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.step-command {
  background: var(--code-bg);
  padding: 8px 12px;
  border-radius: 6px;
  font-family: 'Fira Code', monospace;
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid var(--border-subtle);
}

/* Architecture Dual Interface Diagram */
.arch-diagram-wrapper {
  margin-top: 50px;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  text-align: center;
}

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

/* Benchmark Comparison Section */
.benchmarks-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.bench-card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.bench-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.bench-caption {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

.bench-bar-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.bench-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bench-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.84rem;
  font-family: 'Fira Code', monospace;
}

.bench-bar-track {
  height: 12px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.bench-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.bench-bar-fill.accent {
  background: var(--accent);
  box-shadow: 0 0 10px rgba(96, 230, 255, 0.5);
}

.bench-bar-fill.purple {
  background: var(--accent-purple);
}

.bench-bar-fill.gray {
  background: #475569;
}

/* Interactive Calculator (巧思 1) */
.calc-card {
  background: linear-gradient(180deg, rgba(14, 23, 42, 0.9) 0%, rgba(7, 11, 20, 0.95) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.calc-slider-box {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.slider-value-display {
  font-family: 'Fira Code', monospace;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}

.calc-range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.calc-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 15px var(--accent);
  cursor: pointer;
}

.calc-results-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.calc-stat-box {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
}

.calc-stat-num {
  font-family: 'Fira Code', monospace;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 4px;
}

.calc-stat-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Supported Agents & 1-Click Configurator */
.ide-config-wrapper {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

.ide-tabs-header {
  display: flex;
  overflow-x: auto;
  background: rgba(7, 11, 20, 0.8);
  border-bottom: 1px solid var(--border);
  scrollbar-width: none;
}

.ide-tabs-header::-webkit-scrollbar {
  display: none;
}

.ide-tab-btn {
  padding: 16px 22px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.ide-tab-btn:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.ide-tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: rgba(96, 230, 255, 0.05);
}

.ide-tab-body {
  padding: 32px;
}

.ide-config-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.config-col-header {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.config-code-block {
  background: var(--code-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: 'Fira Code', monospace;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text-secondary);
  overflow-x: auto;
  position: relative;
}

/* FAQ Accordion */
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 860px;
  margin: 0 auto;
}

.faq-card {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-card:hover {
  border-color: var(--border);
}

.faq-question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
}

.faq-toggle-icon {
  width: 18px;
  height: 18px;
  color: var(--accent);
  transition: transform 0.3s ease;
}

.faq-card.open .faq-toggle-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 20px 24px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.faq-card.open .faq-answer {
  display: block;
}

/* CTA Footer Banner */
.cta-banner-section {
  padding: 90px 0;
  text-align: center;
}

.cta-banner-card {
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(108, 124, 255, 0.15), transparent), var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 60px 40px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

.cta-title {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px auto;
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 50px 0 30px 0;
  background: #05080E;
  font-size: 0.88rem;
  color: var(--text-tertiary);
}

.footer-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--accent);
}

.footer-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  font-size: 0.8rem;
}

/* Toast Notification */
.toast-notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--surface);
  border: 1px solid var(--accent);
  box-shadow: 0 10px 30px rgba(96, 230, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

/* Fade-in Animation Utility */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-duel-container {
    grid-template-columns: 1fr;
  }
  .graph-explorer-grid {
    grid-template-columns: 1fr;
  }
  .workflow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .benchmarks-grid {
    grid-template-columns: 1fr;
  }
  .calc-grid {
    grid-template-columns: 1fr;
  }
  .ide-config-content {
    grid-template-columns: 1fr;
  }
  .col-span-4 { grid-column: span 6; }
  .col-span-8 { grid-column: span 12; }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.3rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .nav-links {
    display: none;
  }
  .col-span-6 { grid-column: span 12; }
  .col-span-4 { grid-column: span 12; }
  .workflow-grid {
    grid-template-columns: 1fr;
  }
  .calc-results-panel {
    grid-template-columns: 1fr;
  }
  .install-prompt-box {
    flex-direction: column;
    align-items: flex-start;
  }
  .copy-button {
    width: 100%;
    justify-content: center;
  }
  .playground-tab {
    padding: 14px 12px;
    font-size: 0.85rem;
  }
  .plane-content-pane {
    padding: 20px 16px;
  }
}

/* Language Selector */
.lang-selector-wrapper {
  position: relative;
}

.lang-selector-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  background: rgba(14, 23, 42, 0.7);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(8px);
}

.lang-selector-btn:hover {
  border-color: var(--accent);
  background: rgba(96, 230, 255, 0.08);
}

.lang-globe-icon {
  color: var(--accent);
}

.lang-chevron-icon {
  transition: transform 0.2s ease;
  color: var(--text-tertiary);
}

.lang-selector-wrapper.open .lang-chevron-icon {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 150px;
  background: rgba(11, 18, 33, 0.96);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  padding: 6px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 15px rgba(96, 230, 255, 0.15);
  backdrop-filter: blur(16px);
  z-index: 1000;
  display: none;
  flex-direction: column;
  gap: 2px;
}

.lang-selector-wrapper.open .lang-dropdown {
  display: flex;
}

.lang-option-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-option-btn:hover {
  background: rgba(96, 230, 255, 0.12);
  color: var(--text);
}

.lang-option-btn.active {
  background: rgba(96, 230, 255, 0.18);
  color: var(--accent);
  font-weight: 600;
}

.lang-option-btn .lang-check-icon {
  opacity: 0;
  font-size: 0.8rem;
  color: var(--accent);
}

.lang-option-btn.active .lang-check-icon {
  opacity: 1;
}

/* RTL Support for Arabic */
html[dir="rtl"] {
  direction: rtl;
  text-align: right;
}

html[dir="rtl"] .nav-inner {
  direction: rtl;
}

html[dir="rtl"] .lang-dropdown {
  right: auto;
  left: 0;
}

html[dir="rtl"] .lang-option-btn {
  text-align: right;
}

/* Terminals and code snippets remain strictly LTR for code readability */
html[dir="rtl"] .terminal-card,
html[dir="rtl"] .slice-viewer,
html[dir="rtl"] .config-code-block,
html[dir="rtl"] .install-prompt-text,
html[dir="rtl"] .step-command,
html[dir="rtl"] .bento-visual-preview,
html[dir="rtl"] code,
html[dir="rtl"] pre {
  direction: ltr !important;
  text-align: left !important;
}

html[dir="rtl"] .terminal-prompt {
  margin-right: 8px;
  margin-left: 0;
}

html[dir="rtl"] .query-input {
  text-align: left;
  direction: ltr;
}

/* Reduced Motion Accessible Support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  .marquee-content {
    animation: none;
  }
}