/* ==========================================================================
   ARCHITECTURAL MINIMALIST DESIGN SYSTEM
   Palette: Pure White (#FFFFFF), Near-Black (#111111), Restrained Terracotta (#C2593F)
   Typography: Geometric Sans-serif + Architectural Monospace
   Layout: Visible Grid Alignment, Hairline Borders (1px), Square Corners, Zero Shadows
   ========================================================================== */

:root {
  --bg-primary: #ffffff;
  --bg-subtle: #fafafa;
  --bg-surface: #f4f4f4;
  --bg-terracotta-tint: #fcf6f4;
  
  --text-primary: #111111;
  --text-secondary: #4a4a4a;
  --text-muted: #767676;
  --text-light: #999999;
  
  --accent-terracotta: #c2593f;
  --accent-terracotta-dark: #a8442c;
  --accent-terracotta-soft: rgba(194, 89, 63, 0.12);
  
  --border-hairline: #e2e2e2;
  --border-dark: #111111;
  --border-subtle: #eeeeee;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Arial Nova", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", "Consolas", Menlo, Courier, monospace;
  
  --max-width: 1320px;
  --gutter: 2rem;
  --header-height: 72px;
}

/* Reset & Strict Architectural Rules */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
  box-shadow: none !important;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
  max-width: 1440px;
  margin: 0 auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* Layout Container & Grid Alignment */
.site-container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.hairline-grid-wrapper {
  position: relative;
  border-bottom: 1px solid var(--border-hairline);
}

/* Top Meta / Edition Strip */
.top-meta-bar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-hairline);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0.5rem 0;
}

.top-meta-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.meta-code {
  color: var(--accent-terracotta);
  font-weight: 600;
  margin-right: 0.75rem;
}

/* Navigation Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.header-inner {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  height: var(--header-height);
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-right: 2rem;
  border-right: 1px solid var(--border-hairline);
}

.brand-mark {
  display: inline-block;
  width: 14px;
  height: 14px;
  background-color: var(--accent-terracotta);
}

.brand-name {
  font-family: var(--font-sans);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-spec {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  border-left: 1px solid var(--border-hairline);
  padding-left: 0.75rem;
  margin-left: 0.25rem;
}

.main-nav {
  display: flex;
  align-items: stretch;
  margin-left: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-right: 1px solid var(--border-hairline);
  position: relative;
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-subtle);
}

.nav-link.active {
  color: var(--text-primary);
  font-weight: 600;
}

.header-action-group {
  display: flex;
  align-items: stretch;
}

.btn-header-cta {
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  background-color: var(--accent-terracotta);
  color: #ffffff !important;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-left: 1px solid var(--accent-terracotta);
}

.btn-header-cta:hover {
  background-color: var(--accent-terracotta-dark);
}

.nav-toggle-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 64px;
  border-left: 1px solid var(--border-hairline);
  color: var(--text-primary);
}

/* Common Architectural Typography Elements */
.kicker-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-terracotta);
  margin-bottom: 1rem;
}

.kicker-square {
  width: 6px;
  height: 6px;
  background-color: var(--accent-terracotta);
}

.section-head-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  border-bottom: 1px solid var(--border-dark);
  padding: 3rem 0 2rem;
  margin-bottom: 0;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--accent-terracotta);
  text-transform: uppercase;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-top: 0.25rem;
}

.section-narrative {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 680px;
}

/* ==========================================================================
   HERO SECTION: OVERSIZED HEADLINE + NARROW SUPPORTING COLUMN
   ========================================================================== */
.hero-block {
  border-bottom: 1px solid var(--border-dark);
  background: var(--bg-primary);
}

.hero-architecture-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  min-height: calc(88vh - var(--header-height));
}

.hero-main-column {
  padding: 4.5rem var(--gutter) 4.5rem 0;
  border-right: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hero-oversized-headline {
  font-size: clamp(3rem, 6.2vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.02;
  color: var(--text-primary);
  margin: 1.25rem 0 2.5rem;
}

.hero-oversized-headline em {
  font-style: normal;
  color: var(--accent-terracotta);
  border-bottom: 3px solid var(--accent-terracotta);
}

.hero-subhead {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 640px;
  font-weight: 400;
}

.hero-manifesto-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-hairline);
  margin-top: 4rem;
  padding-top: 2rem;
}

.manifesto-item {
  border-right: 1px solid var(--border-hairline);
  padding: 0 1.5rem;
}

.manifesto-item:first-child {
  padding-left: 0;
}

.manifesto-item:last-child {
  border-right: none;
}

.manifesto-metric {
  font-family: var(--font-mono);
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  display: block;
}

.manifesto-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Narrow Supporting Column */
.hero-supporting-column {
  background: var(--bg-subtle);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.supporting-header {
  padding: 2rem;
  border-bottom: 1px solid var(--border-hairline);
}

.supporting-index-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-terracotta);
  font-weight: 600;
  display: block;
  margin-bottom: 0.5rem;
}

.supporting-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.supporting-narrative {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: 0.75rem;
}

.supporting-cta-box {
  padding: 2rem;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--bg-primary);
}

.btn-architectural-solid {
  display: block;
  text-align: center;
  padding: 1rem 1.5rem;
  background-color: var(--accent-terracotta);
  color: #ffffff !important;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  border: 1px solid var(--accent-terracotta);
  transition: all 0.15s ease;
}

.btn-architectural-solid:hover {
  background-color: var(--text-primary);
  border-color: var(--text-primary);
}

.btn-architectural-line {
  display: block;
  text-align: center;
  padding: 0.875rem 1.5rem;
  background-color: transparent;
  color: var(--text-primary) !important;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.03em;
  border: 1px solid var(--border-dark);
  transition: all 0.15s ease;
}

.btn-architectural-line:hover {
  background-color: var(--text-primary);
  color: #ffffff !important;
}

/* Hairline Telemetry Grid in Column */
.supporting-telemetry {
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.telemetry-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--border-hairline);
}

.telemetry-row:last-child {
  border-bottom: none;
}

.telemetry-key {
  color: var(--text-muted);
}

.telemetry-val {
  font-weight: 600;
  color: var(--text-primary);
}

.telemetry-val.accent {
  color: var(--accent-terracotta);
}

/* ==========================================================================
   BENEFITS: UNCONVENTIONAL ALTERNATING TWO-COLUMN LAYOUT
   ========================================================================== */
.benefits-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.alternating-benefit-row {
  display: grid;
  border-bottom: 1px solid var(--border-hairline);
  min-height: 380px;
}

.alternating-benefit-row:last-child {
  border-bottom: none;
}

/* Layout Variant A: Left Heavy (45% Headline / Meta, 55% Technical Analysis) */
.benefit-row-variant-a {
  grid-template-columns: 45% 55%;
}

/* Layout Variant B: Alternating Inverted (55% Technical Analysis, 45% Headline / Meta) */
.benefit-row-variant-b {
  grid-template-columns: 55% 45%;
}

.benefit-col {
  padding: 3.5rem var(--gutter);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.benefit-col.col-border-right {
  border-right: 1px solid var(--border-hairline);
}

.benefit-col.col-bg-subtle {
  background-color: var(--bg-subtle);
}

.benefit-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--accent-terracotta);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.benefit-title {
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.benefit-lead {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.benefit-spec-list {
  list-style: none;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.benefit-spec-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.spec-bullet {
  width: 6px;
  height: 6px;
  background-color: var(--accent-terracotta);
  margin-top: 0.5rem;
  flex-shrink: 0;
}

.architectural-ascii-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-hairline);
  padding: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-top: 1.5rem;
  overflow-x: auto;
}

/* ==========================================================================
   NETWORK NODES & TOPOLOGY (INFRASTRUCTURE MATRIX)
   ========================================================================== */
.infrastructure-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.infra-matrix-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border-hairline);
}

.infra-table-panel {
  padding: 3rem var(--gutter);
}

.infra-table-panel:first-child {
  border-right: 1px solid var(--border-hairline);
}

.panel-header-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.panel-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.panel-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent-terracotta);
  text-transform: uppercase;
}

.architectural-table {
  width: 100%;
  font-size: 0.875rem;
}

.architectural-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid var(--border-dark);
}

.architectural-table td {
  padding: 1rem 0.5rem;
  border-bottom: 1px solid var(--border-hairline);
  color: var(--text-secondary);
}

.architectural-table tr:hover td {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.node-primary-cell {
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.node-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-terracotta);
  border: 1px solid var(--border-hairline);
  padding: 0.125rem 0.375rem;
}

.table-badge-clean {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 0.125rem 0.375rem;
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-hairline);
}

/* ==========================================================================
   AI & STREAMING WORKFLOW SECTION
   ========================================================================== */
.ai-stream-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.ai-stream-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.suite-block {
  padding: 3.5rem var(--gutter);
}

.suite-block:first-child {
  border-right: 1px solid var(--border-hairline);
}

.suite-kicker {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-terracotta);
  font-weight: 600;
  margin-bottom: 0.5rem;
  display: block;
}

.suite-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.suite-lead {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.structured-app-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--border-hairline);
}

.app-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-hairline);
  align-items: baseline;
  gap: 1.5rem;
}

.app-name-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.app-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.app-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--accent-terracotta);
  border: 1px solid var(--border-hairline);
  padding: 0.1rem 0.35rem;
}

.app-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   PLANS: CLEAR COMPARISON TABLE
   ========================================================================== */
.pricing-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.pricing-table-scroll-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-hairline);
  border-top: none;
  margin: 3rem 0;
  background: var(--bg-primary);
}

.plans-comparison-table {
  width: 100%;
  min-width: 840px;
  font-size: 0.9375rem;
}

.plans-comparison-table th,
.plans-comparison-table td {
  padding: 1.5rem 1.25rem;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
}

.plans-comparison-table th:last-child,
.plans-comparison-table td:last-child {
  border-right: none;
}

.plans-comparison-table th {
  background-color: var(--bg-subtle);
  font-weight: 600;
  color: var(--text-primary);
}

.plans-comparison-table .feature-col-th {
  width: 25%;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.plan-header-cell {
  width: 25%;
  position: relative;
}

.plan-header-cell.plan-featured {
  background-color: var(--bg-terracotta-tint);
  border-top: 3px solid var(--accent-terracotta);
}

.plan-name-label {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.plan-badge-terracotta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  background: var(--accent-terracotta);
  padding: 0.25rem 0.5rem;
  margin-bottom: 0.5rem;
}

.plan-price-block {
  margin-top: 0.75rem;
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.currency-sym {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--text-primary);
  font-weight: 600;
}

.price-num {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1;
}

.price-cycle {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.feature-meta-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  display: block;
}

.col-highlight {
  background-color: var(--bg-terracotta-tint);
  font-weight: 600;
}

.table-cta-cell {
  padding-top: 2rem !important;
  padding-bottom: 2rem !important;
}

/* ==========================================================================
   SEO ARTICLES (DIRECTORY GRID)
   ========================================================================== */
.articles-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.articles-structural-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-hairline);
  margin-top: 3rem;
}

.article-structural-card {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--bg-primary);
  transition: background-color 0.15s ease;
}

.article-structural-card:nth-child(3n) {
  border-right: none;
}

.article-structural-card:hover {
  background-color: var(--bg-subtle);
}

.article-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.article-category-tag {
  color: var(--accent-terracotta);
  font-weight: 600;
}

.article-heading-link {
  font-size: 1.1875rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: block;
}

.article-heading-link:hover {
  color: var(--accent-terracotta);
}

.article-abstract {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.article-footer-line {
  border-top: 1px solid var(--border-hairline);
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.article-action-link {
  font-weight: 600;
  color: var(--accent-terracotta);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.article-action-link:hover {
  color: var(--text-primary);
}

/* ==========================================================================
   FIELD NOTES / USER REVIEWS
   ========================================================================== */
.field-notes-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
}

.notes-triplet-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-hairline);
  margin-top: 3rem;
}

.note-box {
  padding: 3rem 2rem;
  border-right: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.note-box:last-child {
  border-right: none;
}

.note-body {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  position: relative;
  margin-bottom: 2rem;
}

.note-body::before {
  content: "“";
  display: block;
  font-size: 2.5rem;
  line-height: 1;
  color: var(--accent-terracotta);
  font-family: Georgia, serif;
  margin-bottom: 0.5rem;
}

.note-author-meta {
  border-top: 1px solid var(--border-hairline);
  padding-top: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.note-author-initial {
  width: 40px;
  height: 40px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--accent-terracotta);
}

.note-author-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  display: block;
}

.note-author-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
  display: block;
}

/* ==========================================================================
   FAQ: COMPACT ACCORDION
   ========================================================================== */
.faq-section {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-dark);
  padding-bottom: 5rem;
}

.compact-accordion-container {
  margin-top: 3rem;
  border-top: 1px solid var(--border-hairline);
}

.accordion-row {
  border-bottom: 1px solid var(--border-hairline);
  background: var(--bg-primary);
}

.accordion-summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  cursor: pointer;
  user-select: none;
  gap: 1rem;
}

.accordion-summary::-webkit-details-marker {
  display: none;
}

.accordion-summary-content {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
}

.accordion-index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-terracotta);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.accordion-question {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

.accordion-toggle-icon {
  width: 24px;
  height: 24px;
  border: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: all 0.15s ease;
}

details[open] .accordion-toggle-icon {
  background-color: var(--text-primary);
  color: #ffffff;
  border-color: var(--text-primary);
}

details[open] .accordion-toggle-icon::before {
  content: "−";
}

details:not([open]) .accordion-toggle-icon::before {
  content: "+";
}

.accordion-answer {
  padding: 0 0 1.5rem 3.5rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 860px;
}

/* ==========================================================================
   FOOTER (ARCHITECTURAL & EXACT OUTBOUND LINKS)
   ========================================================================== */
.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-dark);
}

.footer-top-row {
  display: grid;
  grid-template-columns: 340px 1fr 1fr 1fr;
  padding: 4.5rem 0 3.5rem;
  border-bottom: 1px solid var(--border-hairline);
  gap: 2.5rem;
}

.footer-brand-narrative {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-top: 1rem;
  max-width: 280px;
}

.footer-col-heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-terracotta);
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.footer-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

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

/* Curated External SEO Partners Line */
.footer-external-partners-line {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.partner-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.partner-links-group {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.partner-link-item {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--accent-terracotta);
}

.partner-link-item:hover {
  color: var(--accent-terracotta);
}

.footer-bottom-baseline {
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-transform: uppercase;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ==========================================================================
   ARTICLE & STANDALONE PAGE TEMPLATE STYLES
   ========================================================================== */
.page-masthead {
  padding: 3.5rem 0 2.5rem;
  border-bottom: 1px solid var(--border-dark);
}

.breadcrumb-line {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-separator {
  color: var(--accent-terracotta);
}

.page-main-headline {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.page-lead-meta {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 800px;
}

.page-content-wrapper {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3.5rem;
  padding: 4rem 0;
}

.page-article-body {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #2b2b2b;
}

.page-article-body h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 2.75rem 0 1rem;
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 0.5rem;
}

.page-article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2rem 0 0.75rem;
}

.page-article-body p {
  margin-bottom: 1.5rem;
}

.page-article-body ul, .page-article-body ol {
  margin: 1rem 0 1.75rem 1.5rem;
}

.page-article-body li {
  margin-bottom: 0.5rem;
}

.page-article-body blockquote {
  border-left: 3px solid var(--accent-terracotta);
  padding: 1rem 1.5rem;
  background: var(--bg-subtle);
  margin: 2rem 0;
  font-style: italic;
  color: var(--text-secondary);
}

.page-sidebar {
  border-left: 1px solid var(--border-hairline);
  padding-left: 2rem;
}

.sidebar-sticky-box {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

/* ==========================================================================
   RESPONSIVE DESIGN (MOBILE-FIRST PRINCIPLE)
   ========================================================================== */
@media (max-width: 1024px) {
  :root {
    --gutter: 1.5rem;
  }
  
  .hero-architecture-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  
  .hero-main-column {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
    padding: 3rem 0;
  }
  
  .hero-supporting-column {
    border-top: none;
  }
  
  .section-head-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 2.5rem 0 1.5rem;
  }
  
  .benefit-row-variant-a,
  .benefit-row-variant-b {
    grid-template-columns: 1fr;
  }
  
  .benefit-col.col-border-right {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  
  .infra-matrix-grid {
    grid-template-columns: 1fr;
  }
  
  .infra-table-panel:first-child {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  
  .ai-stream-two-col {
    grid-template-columns: 1fr;
  }
  
  .suite-block:first-child {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  
  .articles-structural-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .article-structural-card:nth-child(3n) {
    border-right: 1px solid var(--border-hairline);
  }
  
  .article-structural-card:nth-child(2n) {
    border-right: none;
  }
  
  .notes-triplet-grid {
    grid-template-columns: 1fr;
  }
  
  .note-box {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  
  .footer-top-row {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
  
  .page-content-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .page-sidebar {
    border-left: none;
    border-top: 1px solid var(--border-hairline);
    padding-left: 0;
    padding-top: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --gutter: 1.25rem;
    --header-height: 64px;
  }
  
  .top-meta-bar {
    display: none;
  }
  
  .brand-spec {
    display: none;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-dark);
    flex-direction: column;
    z-index: 99;
  }
  
  .main-nav.nav-open {
    display: flex;
  }
  
  .nav-link {
    padding: 1.125rem var(--gutter);
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }
  
  .nav-toggle-btn {
    display: flex;
  }
  
  .hero-manifesto-row {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2.5rem;
  }
  
  .manifesto-item {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
    padding: 0 0 1.25rem 0;
  }
  
  .manifesto-item:last-child {
    border-bottom: none;
  }
  
  .benefit-col {
    padding: 2.5rem var(--gutter);
  }
  
  .app-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  
  .articles-structural-grid {
    grid-template-columns: 1fr;
  }
  
  .article-structural-card {
    border-right: none !important;
  }
  
  .accordion-answer {
    padding-left: 2rem;
  }
  
  .footer-top-row {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer-external-partners-line {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .partner-links-group {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .footer-bottom-baseline {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}
/* ==========================================================================
   ARTICLE PAGE COMPONENT COMPATIBILITY (ARCHITECTURAL MINIMALIST)
   ========================================================================== */
.top-edition-bar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-hairline);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0.625rem 0;
  text-transform: uppercase;
}

.edition-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.edition-tag {
  color: var(--accent-terracotta);
  font-weight: 600;
  margin-right: 0.75rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  border-left: 1px solid var(--border-hairline);
  padding-left: 0.75rem;
}

.header-actions {
  display: flex;
  align-items: stretch;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  background-color: var(--accent-terracotta);
  color: #ffffff !important;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  border: 1px solid var(--accent-terracotta);
  transition: all 0.15s ease;
}

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

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  background-color: transparent;
  color: var(--text-primary) !important;
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid var(--border-dark);
  transition: all 0.15s ease;
}

.btn-ghost:hover {
  background-color: var(--text-primary);
  color: #ffffff !important;
}

.article-header-hero {
  padding: 3.5rem 0 2rem;
  border-bottom: 1px solid var(--border-dark);
}

.breadcrumb-nav {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb-sep {
  color: var(--accent-terracotta);
}

.article-hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.article-meta-line {
  display: flex;
  gap: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  flex-wrap: wrap;
}

.article-meta-item strong {
  color: var(--text-primary);
}

.article-content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3.5rem;
  padding: 3.5rem 0;
}

.article-main-body {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #2b2b2b;
}

.article-main-body h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 2.75rem 0 1rem;
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 0.5rem;
}

.article-main-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2rem 0 0.75rem;
}

.article-main-body p {
  margin-bottom: 1.5rem;
}

.article-main-body ul, .article-main-body ol {
  margin: 1rem 0 1.75rem 1.5rem;
}

.article-main-body li {
  margin-bottom: 0.5rem;
}

.article-cta-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-left: 3px solid var(--accent-terracotta);
  padding: 2.5rem;
  margin: 3.5rem 0 2rem;
}

.article-cta-box h3 {
  font-size: 1.375rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.article-sidebar {
  border-left: 1px solid var(--border-hairline);
  padding-left: 2.5rem;
}

.sidebar-widget {
  background: var(--bg-primary);
  border: 1px solid var(--border-hairline);
  padding: 1.75rem;
  margin-bottom: 2rem;
}

.widget-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-terracotta);
  font-weight: 600;
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.widget-article-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.widget-article-item a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  display: block;
}

.widget-article-item a:hover {
  color: var(--accent-terracotta);
}

.widget-article-meta {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

.footer-bottom-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-curated-links-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
  border-top: 1px solid var(--border-hairline);
  flex-wrap: wrap;
  gap: 1rem;
}

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

.curated-links-group {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.curated-link-item {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--accent-terracotta);
}

.curated-link-item:hover {
  color: var(--accent-terracotta);
}

@media (max-width: 1024px) {
  .article-content-layout {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    border-left: none;
    border-top: 1px solid var(--border-hairline);
    padding-left: 0;
    padding-top: 2rem;
  }
}