:root {
  --ink: #0f172a;
  --ink-secondary: #334155;
  --muted: #64748b;
  --bg: #f8fafc;
  --panel: #ffffff;
  --line: #e2e8f0;
  --line-dark: rgba(255, 255, 255, 0.08);
  --dark: #090d16;
  --dark2: #0f172a;
  --sidebar-bg: #0b1120;
  --accent: #2db6bb;
  --accent-dark: #0f766e;
  --accent-soft: #f0fdfa;
  --accent-glow: rgba(45, 182, 187, 0.15);
  --violet: #6366f1;
  --violet-soft: #eef2ff;
  --emerald: #10b981;
  --emerald-soft: #ecfdf5;
  --amber: #f59e0b;
  --amber-soft: #fffbeb;
  --rose: #f43f5e;
  --rose-soft: #fff1f2;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 30px -4px rgba(15, 23, 42, 0.1);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  height: 100%;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

body {
  overflow: hidden;
}

button, input, select {
  font: inherit;
}

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

/* App Grid Layout */
.app {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 100vh;
}

/* ==========================================================================
   Sidebar Navigation (Professional Docs Sidebar)
   ========================================================================== */

.sidebar {
  background: var(--sidebar-bg);
  color: #f8fafc;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
  position: relative;
  z-index: 20;
}

.side-inner {
  padding: 20px 16px 16px;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
}

/* Custom Scrollbar for Sidebar */
.side-inner::-webkit-scrollbar {
  width: 5px;
}
.side-inner::-webkit-scrollbar-track {
  background: transparent;
}
.side-inner::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
}
.side-inner::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.22);
}

/* Brand Header */
.brand {
  margin-bottom: 20px;
  padding: 0 4px;
}
.brand a {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #111827;
  display: grid;
  place-items: center;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}
.brand-mark img {
  max-width: 26px;
  max-height: 26px;
  display: block;
}
.brand strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #f8fafc;
}
.brand small {
  display: block;
  color: #94a3b8;
  font-size: 12px;
  margin-top: 1px;
}

/* Search Box */
.search {
  position: relative;
  margin-bottom: 20px;
}
.search input {
  width: 100%;
  padding: 10px 36px 10px 36px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: #111827;
  color: #f8fafc;
  font-size: 13px;
  outline: none;
  transition: all 0.2s ease;
}
.search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 182, 187, 0.2);
  background: #162032;
}
.search input::placeholder {
  color: #64748b;
}
.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: #64748b;
  font-size: 16px;
  pointer-events: none;
}
.search-kbd {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #94a3b8;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  pointer-events: none;
}

/* Search Results Popup */
.results {
  position: absolute;
  left: 0;
  right: 0;
  top: 46px;
  background: #ffffff;
  color: var(--ink);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
  z-index: 50;
  max-height: 360px;
  overflow-y: auto;
}
.results.hidden {
  display: none;
}
.result {
  display: block;
  padding: 10px 14px;
  border-bottom: 1px solid #f1f5f9;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s;
}
.result:last-child {
  border-bottom: 0;
}
.result:hover {
  background: #f0fdfa;
}
.result strong {
  display: block;
  font-size: 13px;
  color: var(--ink);
  font-weight: 600;
}
.result small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.4;
  margin-top: 2px;
}

/* Nav Groups / Accordion */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-group {
  border-radius: 10px;
  transition: background 0.2s;
}

.nav-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 10px;
  background: transparent;
  border: 0;
  color: #cbd5e1;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: left;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.15s ease;
  user-select: none;
}
.nav-group-header:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
}
.nav-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-group-badge {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 10px;
  font-weight: 800;
  color: #94a3b8;
  flex-shrink: 0;
}
.nav-group-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-group-arrow {
  font-size: 15px;
  color: #64748b;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

/* Collapsible behavior */
.nav-group-items {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 4px 0 6px 12px;
}

.nav-group:not(.expanded) .nav-group-items {
  display: none;
}
.nav-group:not(.expanded) .nav-group-arrow {
  transform: rotate(-90deg);
}

/* Nav Item Links */
.nav-link {
  display: flex !important;
  align-items: center;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
  color: #94a3b8;
  text-align: left;
  padding: 7px 10px;
  border-radius: 7px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.4;
  margin: 1px 0;
  transition: all 0.15s ease;
  text-decoration: none;
  word-break: break-word;
}
.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #f1f5f9;
}
.nav-link-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #475569;
  flex-shrink: 0;
  transition: all 0.15s;
}
.nav-link:hover .nav-link-dot {
  background: #94a3b8;
}
.nav-link-text {
  flex: 1;
}

/* Active Link */
.nav-link.active {
  background: var(--accent-glow) !important;
  color: var(--accent) !important;
  font-weight: 600;
}
.nav-link.active .nav-link-dot {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(45, 182, 187, 0.7);
  transform: scale(1.2);
}

/* Sidebar Footer */
.side-footer {
  padding: 14px 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
  color: #64748b;
  font-size: 11px;
  line-height: 1.5;
}
.side-footer a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #94a3b8;
  font-weight: 500;
  text-decoration: none;
  margin-bottom: 6px;
  transition: color 0.15s;
}
.side-footer a:hover {
  color: var(--accent);
}

/* ==========================================================================
   Main Content Area & Topbar
   ========================================================================== */

.main {
  overflow-y: auto;
  overflow-x: hidden;
  height: 100vh;
  background: var(--bg);
  scroll-behavior: smooth;
}

/* Topbar */
.topbar {
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 15;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 36px;
  gap: 16px;
}

.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}
.breadcrumb a:hover {
  color: var(--accent-dark);
}
.breadcrumb .sep {
  color: #cbd5e1;
  font-size: 11px;
}
.breadcrumb .current {
  color: var(--ink);
  font-weight: 600;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.back-pill {
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s;
}
.back-pill:hover {
  border-color: #cbd5e1;
  color: var(--ink);
  background: #f8fafc;
}

.listen-btn {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--ink-secondary);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  transition: all 0.15s;
}
.listen-btn:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: var(--accent-soft);
}
.listen-btn .listen-icon {
  font-size: 14px;
}

.menu-btn {
  display: none;
  border: 0;
  background: none;
  font-size: 22px;
  color: var(--ink);
  cursor: pointer;
  padding: 4px;
}

/* Article Container */
.article {
  max-width: 980px;
  margin: 0 auto;
  padding: 36px 48px 120px;
}

/* ==========================================================================
   Article Typography & Components
   ========================================================================== */

/* Hero Cards */
.hero {
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 32px;
  box-shadow: var(--shadow);
}
.hero-intro {
  display: grid;
  grid-template-columns: 1.4fr 0.85fr;
  gap: 28px;
  background: linear-gradient(135deg, #ffffff 0%, #f0fdfa 60%, #ecfeff 100%);
  border: 1px solid #ccfbf1;
}
.hero-dark {
  background: linear-gradient(135deg, #0b1120 0%, #1e293b 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-light {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid var(--line);
}
.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
  font-weight: 800;
  color: var(--accent-dark);
  margin-bottom: 10px;
}
.hero-dark .hero-kicker {
  color: #5eead4;
}
.hero h1 {
  font-size: 34px;
  line-height: 1.2;
  margin: 0 0 14px;
  letter-spacing: -0.03em;
  font-weight: 800;
  color: var(--ink);
}
.hero-dark h1 {
  color: #ffffff;
}
.hero-lead {
  font-size: 16.5px !important;
  line-height: 1.7 !important;
  margin: 0 !important;
  color: var(--ink-secondary);
}
.hero-dark .hero-lead {
  color: #cbd5e1;
}
.hero-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.hero-tags span {
  background: #ffffff;
  border: 1px solid #99f6e4;
  color: var(--accent-dark);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.hero-dark .hero-tags span {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
  color: #ccfbf1;
}

.hero-side-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.side-card-kicker {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 10px;
  color: var(--accent-dark);
  font-weight: 800;
  margin-bottom: 8px;
}
.hero-side-card p {
  font-size: 14px;
  line-height: 1.6;
  margin: 0 0 6px;
}
.hero-side-card .muted {
  color: var(--muted);
  font-size: 13px;
}

/* Headings */
.article h2 {
  font-size: 23px;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin: 38px 0 14px;
  color: var(--ink);
  scroll-margin-top: 80px;
}
.article h3 {
  font-size: 16.5px;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 24px 0 8px;
  color: var(--ink);
  scroll-margin-top: 80px;
}
.article p {
  font-size: 15px;
  line-height: 1.75;
  color: #334155;
  margin: 0 0 16px;
}
.article ul, .article ol {
  font-size: 14.5px;
  line-height: 1.7;
  color: #334155;
  padding-left: 22px;
  margin: 0 0 18px;
}
.article li {
  margin-bottom: 6px;
}

/* Table of Contents */
.toc {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
}
.toc-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-dark);
  font-weight: 800;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 6px 16px;
}
.toc li {
  margin: 0;
}
.toc a {
  color: #475569;
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
  transition: color 0.15s;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}
.toc a:hover {
  color: var(--accent-dark);
}
.toc-hash {
  color: var(--accent);
  font-weight: 700;
  font-size: 12px;
}

/* Lead Note / Callout */
.lead-note {
  background: #ffffff;
  border: 1px solid var(--line);
  border: 1px solid rgba(128, 148, 139, .24);
  padding: 18px 22px;
  border-radius: var(--radius-sm);
  margin: 0 0 28px;
  box-shadow: var(--shadow-sm);
}
.lead-note p {
  margin: 4px 0 0;
  font-size: 15px;
}
.eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-dark);
  font-weight: 800;
}

/* ==========================================================================
   Process Strip, Steps & Timeline
   ========================================================================== */

.process-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
  margin: 26px 0 32px;
}
.process-item {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}
.process-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: #cbd5e1;
}
.process-item .num, .num {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, #0d9488 100%);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 12px;
  box-shadow: 0 4px 10px rgba(45, 182, 187, 0.3);
}
.process-item strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}
.process-item p {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
  margin: 0;
}

/* Check Grid & Check Card */
.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 24px 0 32px;
}
.check-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}
.check-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid #f1f5f9;
}
.check-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.check-card li {
  font-size: 13.5px;
  color: var(--ink-secondary);
  padding: 7px 0 7px 24px;
  position: relative;
  border-bottom: 1px solid #f8fafc;
  margin-bottom: 0;
}
.check-card li:last-child {
  border-bottom: 0;
}
.check-card li:before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 6px;
  color: var(--emerald);
  font-weight: 800;
  font-size: 14px;
}

/* Question Grid */
.question-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 24px;
}
.question-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  box-shadow: var(--shadow-sm);
}
.question-card span {
  font-size: 11px;
  color: var(--accent-dark);
  font-weight: 800;
  padding-top: 2px;
}
.question-card strong {
  font-size: 14px;
  line-height: 1.45;
  color: var(--ink);
}

/* Story Flow Steps */
.story-flow {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0 28px;
}
.story-step {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}
.story-num {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
}
.story-content h3 {
  margin: 0 0 6px;
  font-size: 15px;
}
.story-content p {
  font-size: 13.5px;
  line-height: 1.6;
  margin: 0 0 8px;
}
.story-content ul {
  padding-left: 16px;
  margin: 6px 0 0;
  font-size: 13px;
}

/* Scenario Panels */
.scenario-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  margin: 20px 0 28px;
}
.scenario-panel.single {
  grid-template-columns: 1fr;
}
.scenario-badge {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--accent-soft);
  color: var(--accent-dark);
  padding: 4px 8px;
  border-radius: 999px;
  font-weight: 800;
  display: inline-block;
  margin-bottom: 10px;
}
.scenario-left h3 {
  font-size: 19px;
  margin: 0 0 10px;
}
.mini-stack {
  display: grid;
  gap: 8px;
}
.mini-stack div {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
}
.mini-stack strong {
  display: block;
  font-size: 12.5px;
  margin-bottom: 2px;
}
.mini-stack span {
  font-size: 12px;
  color: var(--muted);
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.feature-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.feature-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 14px;
}
.feature-card h3 {
  margin: 0 0 6px;
  font-size: 15px;
}
.feature-card p {
  font-size: 13.5px;
  line-height: 1.6;
  margin: 0;
  color: #475569;
}

/* Metric Grid & Metric Card */
.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.metric-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.metric-card strong {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 6px;
}
.metric-card span {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* Quality & Coverage Grids */
.quality-grid, .coverage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.quality-card, .coverage-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.quality-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 12px;
}

/* Status Cards & Grid */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 20px 0 28px;
}
.status-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
}
.status-info { border: 1px solid rgba(128, 148, 139, .24); }
.status-warn { border: 1px solid rgba(128, 148, 139, .24); }
.status-bad { border: 1px solid rgba(128, 148, 139, .24); }
.ok { color: var(--emerald); font-weight: 700; }
.new { background: var(--emerald-soft); color: var(--emerald); padding: 2px 6px; border-radius: 4px; font-size: 11px; font-weight: 700; }

/* API Flow & Data Path */
.api-flow, .binding-flow, .data-path {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin: 22px 0;
  box-shadow: var(--shadow-sm);
}
.api-source, .api-pika, .data-path > div {
  padding: 12px 16px;
  border-radius: 10px;
  background: #f8fafc;
  border: 1px solid var(--line);
  font-size: 13px;
}
.api-pika {
  background: #f0fdfa;
  border-color: #99f6e4;
  color: var(--accent-dark);
  font-weight: 600;
}
.api-arrow, .binding-arrow, .data-path-arrow, .opportunity-arrow, .mapping-arrow {
  color: var(--muted);
  font-size: 18px;
  font-weight: 700;
}

/* Source Choice Cards */
.source-choice {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 22px 0;
}
.source-choice-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}
.source-choice-card span {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 4px;
}
.source-choice-card strong {
  display: block;
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 6px;
}
.source-choice-card small {
  font-size: 12.5px;
  color: var(--muted);
  line-height: 1.5;
}
.source-choice-card.accent-source {
  background: #f0fdfa;
  border-color: #99f6e4;
}
.source-choice-card.accent-source strong {
  color: var(--accent-dark);
}

/* Glossary Grid */
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.glossary-item {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.glossary-item strong {
  display: block;
  font-size: 15px;
  color: var(--ink);
  margin-bottom: 6px;
}
.glossary-item p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

/* Callouts */
.callout {
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 26px 0;
  border: 1px solid var(--line);
}
.callout p {
  margin: 4px 0 0;
  font-size: 14.5px;
}
.callout-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 800;
}
.callout-primary {
  background: #f0fdfa;
  border-color: #99f6e4;
}
.callout-primary .callout-title {
  color: var(--accent-dark);
}
.callout-warning {
  background: #fffbeb;
  border-color: #fde68a;
}
.callout-warning .callout-title {
  color: #b45309;
}
.callout-dark {
  background: #0f172a;
  color: #ffffff;
  border-color: #1e293b;
}
.callout-dark p {
  color: #cbd5e1;
}
.callout-dark .callout-title {
  color: #5eead4;
}
.callout-soft {
  background: #ffffff;
  border-color: var(--line);
}
.callout-soft .callout-title {
  color: #64748b;
}

/* Compare Row */
.compare-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
  margin: 20px 0;
}
.compare-side {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}
.compare-side span {
  display: block;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.compare-side strong {
  font-size: 15px;
}
.muted-side {
  background: #ffffff;
}
.muted-side span {
  color: var(--muted);
}
.accent-side {
  background: #f0fdfa;
  border-color: #99f6e4;
}
.accent-side span {
  color: var(--accent-dark);
}
.compare-arrow {
  font-size: 20px;
  color: #94a3b8;
}

/* Role / Data Table */
.role-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #ffffff;
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}
.role-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  border-bottom: 1px solid var(--line);
}
.role-row:last-child {
  border-bottom: 0;
}
.role-row > div {
  padding: 14px 18px;
  font-size: 13.5px;
  line-height: 1.5;
}
.role-head {
  background: #f8fafc;
  color: var(--muted);
  font-size: 11px !important;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Map Stack */
.map-stack {
  margin: 22px 0;
}
.map-layer {
  border-radius: var(--radius);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  align-items: center;
  border: 1px solid var(--line);
  margin-bottom: 6px;
}
.map-label {
  display: flex;
  gap: 8px;
  align-items: center;
}
.map-label span {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.8);
  display: grid;
  place-items: center;
  font-size: 10px;
  font-weight: 800;
}
.map-label strong {
  font-size: 12px;
  letter-spacing: 0.06em;
}
.map-items {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.map-items span {
  background: rgba(255, 255, 255, 0.85);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 500;
}
.map-down {
  text-align: center;
  font-size: 18px;
  color: #94a3b8;
  margin: 4px 0;
}
.layer-data { background: #f0fdfa; }
.layer-understand { background: #f0f9ff; }
.layer-intel { background: #faf5ff; }
.layer-opportunity { background: #fffbeb; }
.layer-decision { background: #f8fafc; }
.layer-action { background: #eef2ff; }
.layer-learn { background: #f0fdf4; }

/* Image Figures */
.screen-figure {
  margin: 24px 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: #ffffff;
}
.screen-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* Quote Block */
.quote-block {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: #0f172a;
  color: #ffffff;
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-top: 28px;
}
.quote-mark {
  font-size: 48px;
  line-height: 0.9;
  color: #5eead4;
}
.quote-block p {
  font-size: 18px;
  color: #ffffff;
  margin: 0 0 4px;
  font-weight: 600;
}
.quote-block span {
  font-size: 12px;
  color: #94a3b8;
}

/* ==========================================================================
   Narration Drawer (TTS Panel)
   ========================================================================== */

.narration-drawer {
  position: fixed;
  right: -380px;
  top: 0;
  bottom: 0;
  width: 360px;
  background: #ffffff;
  border-left: 1px solid var(--line);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
  z-index: 60;
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: right 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.narration-drawer.open {
  right: 0;
}
.narration-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.narration-kicker {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 700;
}
.narration-close {
  background: transparent;
  border: 0;
  font-size: 24px;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 6px;
}
.narration-close:hover {
  background: #f1f5f9;
  color: var(--ink);
}
.narration-now {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 18px;
}
.narration-status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-dark);
  margin-bottom: 8px;
}
.narration-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.narration-page {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.narration-progress {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 6px;
}
.narration-progress-track {
  height: 4px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 12px;
}
.narration-progress-track span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 0.2s;
}
.narration-current-text {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-secondary);
  font-style: italic;
  margin: 0;
  max-height: 80px;
  overflow: hidden;
}
.narration-controls-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}
.narration-controls-main button {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #ffffff;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 14px;
  transition: all 0.15s;
}
.narration-controls-main button:hover {
  background: #f8fafc;
  border-color: #cbd5e1;
}
.narration-play {
  width: 48px !important;
  height: 48px !important;
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: #ffffff !important;
  font-size: 16px !important;
}
.narration-play:hover {
  background: var(--accent-dark) !important;
}
.narration-settings label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-secondary);
  margin-bottom: 6px;
}
.narration-settings select, .narration-settings input[type="range"] {
  width: 100%;
  margin-bottom: 14px;
}
.rate-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.narration-check {
  display: flex !important;
  align-items: center;
  gap: 8px;
  font-size: 12px !important;
  cursor: pointer;
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 1080px) {
  .hero-intro { grid-template-columns: 1fr; }
  .story-flow { grid-template-columns: 1fr; }
  .scenario-panel { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .process-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: fixed;
    width: 300px;
    left: -320px;
    top: 0;
    bottom: 0;
    z-index: 50;
    transition: left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.3);
  }
  .sidebar.open {
    left: 0;
  }
  .menu-btn {
    display: block;
  }
  .article {
    padding: 24px 20px 80px;
  }
  .topbar {
    padding: 0 18px;
  }
  .hero {
    padding: 24px 20px;
  }
  .hero h1 {
    font-size: 26px;
  }
  .question-grid, .feature-grid, .process-strip, .check-grid {
    grid-template-columns: 1fr;
  }
  .compare-row {
    grid-template-columns: 1fr;
  }
  .compare-arrow {
    transform: rotate(90deg);
    justify-self: center;
  }
}