/* ==========================================================================
   immtelecom机场 — SWISS GRAPHIC DESIGN SYSTEM (INTERNATIONAL TYPOGRAPHIC STYLE)
   Characteristics:
   - Bright White Background (#FFFFFF)
   - Deep Black Typography (#000000)
   - One Muted Red Accent (#C53030)
   - Strict Column Grid & Hairline Structural Dividers
   - Bold Sans-Serif Display Headings
   - Visible Section Numbers (01 /, 02 /, etc.)
   - Crisp Rectangular Buttons (Border-Radius: 0px)
   - Zero Gradients, Zero Blobs, Zero Heavy Shadows, Zero Neon Colors
   ========================================================================== */

:root {
  /* Colors */
  --bg-canvas: #ffffff;
  --bg-subtle: #f9f9f9;
  --bg-surface: #f2f2f2;
  --bg-dark: #000000;
  
  --text-primary: #000000;
  --text-secondary: #222222;
  --text-body: #333333;
  --text-muted: #666666;
  --text-light: #888888;
  --text-on-dark: #ffffff;
  
  /* The Single Muted Red Accent (Swiss Red) */
  --accent-red: #c53030;
  --accent-red-hover: #b02424;
  --accent-red-tint: #fdf2f2;
  
  /* Borders */
  --border-black: #000000;
  --border-grid: #e5e5e5;
  --border-strong: #111111;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Roboto Mono", Menlo, Consolas, "Courier New", monospace;
  
  /* Layout */
  --max-width: 1280px;
  --header-height: 72px;
  --grid-gap: 24px;
}

/* Strict Swiss Reset: Absolutely NO rounded corners and NO shadows */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: 0 !important;
  box-shadow: none !important;
  text-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-canvas);
  color: var(--text-primary);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-body);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
}

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

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

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

/* Container */
.site-container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   SWISS TYPOGRAPHY & SECTION NUMBERING
   ========================================================================== */

.section-head-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--border-black);
  margin-bottom: 40px;
}

@media (min-width: 768px) {
  .section-head-grid {
    grid-template-columns: 5fr 7fr;
    align-items: flex-end;
  }
}

.section-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-red);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-title {
  font-size: 2rem;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.75rem;
  }
}

.section-narrative {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 640px;
}

/* Large figures in Swiss Type */
.figure-large {
  font-family: var(--font-sans);
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.figure-large span.unit {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-red);
  margin-left: 2px;
}

/* ==========================================================================
   CRISP RECTANGULAR BUTTONS (SWISS MINIMALIST)
   ========================================================================== */

.btn-swiss-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  border: 2px solid var(--border-black);
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.btn-swiss-solid:hover {
  background-color: var(--accent-red);
  border-color: var(--accent-red);
  color: #ffffff;
}

.btn-swiss-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-black);
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.btn-swiss-outline:hover {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
}

.btn-swiss-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--accent-red);
  color: #ffffff;
  border: 2px solid var(--accent-red);
  padding: 14px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.btn-swiss-accent:hover {
  background-color: var(--bg-dark);
  border-color: var(--border-black);
  color: #ffffff;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-canvas);
  border-bottom: 2px solid var(--border-black);
  height: var(--header-height);
}

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

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-symbol {
  width: 32px;
  height: 32px;
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 1rem;
  border: 1px solid var(--border-black);
}

.brand-symbol .symbol-accent {
  color: var(--accent-red);
}

.brand-text-group {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 1;
  color: var(--text-primary);
  text-transform: uppercase;
}

.brand-subtitle {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--accent-red);
  font-weight: 700;
  margin-top: 3px;
  text-transform: uppercase;
}

.main-nav {
  display: none;
}

@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
  }
  
  .nav-link {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    padding: 8px 0;
    position: relative;
  }
  
  .nav-link:hover {
    color: var(--accent-red);
  }
  
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--accent-red);
    transition: width 0.15s ease;
  }
  
  .nav-link:hover::after {
    width: 100%;
  }
}

.header-action-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-header-cta {
  background-color: var(--accent-red);
  color: #ffffff;
  border: 2px solid var(--accent-red);
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.15s ease;
}

.btn-header-cta:hover {
  background-color: var(--bg-dark);
  border-color: var(--border-black);
}

.nav-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 2px solid var(--border-black);
  background: transparent;
  color: var(--text-primary);
}

@media (min-width: 992px) {
  .nav-toggle-btn {
    display: none;
  }
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-canvas);
  border-bottom: 2px solid var(--border-black);
  padding: 32px 24px;
  z-index: 999;
  overflow-y: auto;
}

.mobile-nav-drawer.is-active {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.mobile-nav-item a {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-grid);
}

.mobile-nav-item a:hover {
  color: var(--accent-red);
  border-bottom-color: var(--accent-red);
}

/* ==========================================================================
   SECTION 01: HERO (HIGHLY TYPOGRAPHIC SWISS POSTER COMPOSITION)
   ========================================================================== */

.hero-section {
  padding-top: 48px;
  padding-bottom: 64px;
  border-bottom: 2px solid var(--border-black);
}

@media (min-width: 992px) {
  .hero-section {
    padding-top: 72px;
    padding-bottom: 96px;
  }
}

.hero-swiss-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 992px) {
  .hero-swiss-grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
  }
}

.hero-kicker-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.hero-kicker-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: #ffffff;
  background-color: var(--accent-red);
  padding: 4px 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-kicker-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.hero-headline {
  font-size: 2.75rem;
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: 24px;
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .hero-headline {
    font-size: 4rem;
  }
}

@media (min-width: 1200px) {
  .hero-headline {
    font-size: 4.5rem;
  }
}

.hero-headline .headline-highlight {
  color: var(--accent-red);
  display: inline-block;
}

.hero-subhead {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--text-body);
  max-width: 600px;
  margin-bottom: 32px;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 40px;
}

@media (min-width: 576px) {
  .hero-cta-group {
    flex-direction: row;
    gap: 16px;
  }
}

.hero-meta-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-grid);
}

@media (min-width: 576px) {
  .hero-meta-strip {
    grid-template-columns: repeat(4, 1fr);
  }
}

.hero-meta-item strong {
  display: block;
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--text-primary);
}

.hero-meta-item span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* Hero Right: Telemetry & Specs Box */
.hero-specs-card {
  border: 2px solid var(--border-black);
  background-color: var(--bg-canvas);
  display: flex;
  flex-direction: column;
}

.specs-card-header {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.specs-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.specs-status-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
}

.specs-status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-red);
}

.specs-grid-table {
  display: grid;
  grid-template-columns: 1fr;
}

.specs-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-grid);
  font-size: 0.875rem;
}

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

.specs-label {
  font-weight: 700;
  color: var(--text-secondary);
}

.specs-value {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-primary);
}

.specs-value.highlight-red {
  color: var(--accent-red);
}

.specs-footnote {
  padding: 12px 16px;
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-black);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   SECTION 02: BENEFITS IN A STAGGERED SWISS GRID
   ========================================================================== */

.benefits-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.staggered-benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 992px) {
  .staggered-benefits-grid {
    grid-template-columns: repeat(12, 1fr);
  }
}

.benefit-card {
  border: 2px solid var(--border-black);
  padding: 32px 28px;
  background-color: var(--bg-canvas);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Staggered layout ratios */
@media (min-width: 992px) {
  .benefit-card.col-span-7 {
    grid-column: span 7;
  }
  .benefit-card.col-span-5 {
    grid-column: span 5;
  }
}

.benefit-card-top {
  margin-bottom: 32px;
}

.benefit-card-index {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--accent-red);
  margin-bottom: 16px;
}

.benefit-card-title {
  font-size: 1.5rem;
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.benefit-card-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-body);
}

.benefit-card-bottom {
  border-top: 1px solid var(--border-grid);
  padding-top: 20px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.benefit-stat-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ==========================================================================
   SECTION 03: GLOBAL NODES & ROUTE TELEMETRY
   ========================================================================== */

.network-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.network-table-wrapper {
  overflow-x: auto;
  border: 2px solid var(--border-black);
}

.network-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.network-table th {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 16px;
  border-right: 1px solid #333333;
}

.network-table th:last-child {
  border-right: none;
}

.network-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border-grid);
  border-right: 1px solid var(--border-grid);
  color: var(--text-secondary);
}

.network-table td:last-child {
  border-right: none;
}

.network-table tr:last-child td {
  border-bottom: none;
}

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

.node-code {
  font-family: var(--font-mono);
  font-weight: 900;
  color: var(--text-primary);
  font-size: 1rem;
}

.node-name {
  font-weight: 700;
  color: var(--text-primary);
}

.latency-badge {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--accent-red);
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
}

.status-dot {
  width: 6px;
  height: 6px;
  background-color: var(--border-black);
}

/* ==========================================================================
   SECTION 04: AI & STREAMING ECOSYSTEM MATRIX
   ========================================================================== */

.capabilities-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.capabilities-swiss-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 992px) {
  .capabilities-swiss-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.capability-block {
  border: 2px solid var(--border-black);
  padding: 36px 30px;
  background-color: var(--bg-canvas);
}

.capability-header {
  border-bottom: 2px solid var(--border-black);
  padding-bottom: 20px;
  margin-bottom: 24px;
}

.capability-category {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-red);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.capability-title {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.2;
}

.service-tags-matrix {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.service-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 6px 12px;
  border: 1px solid var(--border-black);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
}

.service-tag.accent {
  background-color: var(--accent-red);
  border-color: var(--accent-red);
  color: #ffffff;
}

.capability-points-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.capability-points-list li {
  font-size: 0.95rem;
  color: var(--text-body);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.capability-points-list li::before {
  content: '■';
  color: var(--accent-red);
  font-size: 0.75rem;
  margin-top: 5px;
}

/* ==========================================================================
   SECTION 05: PLANS & PRICING (STRAIGHTFORWARD SWISS COMPARISON TABLE)
   ========================================================================== */

.pricing-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.pricing-table-wrapper {
  overflow-x: auto;
  border: 2px solid var(--border-black);
}

.plans-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.plans-table th,
.plans-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-grid);
  border-right: 1px solid var(--border-grid);
  font-size: 0.9rem;
  vertical-align: middle;
}

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

.plans-table tr:last-child td {
  border-bottom: none;
}

.plans-table thead th {
  background-color: var(--bg-subtle);
  border-bottom: 2px solid var(--border-black);
  vertical-align: top;
}

.plans-table th.col-feature {
  width: 25%;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.plan-header-box {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text-primary);
  text-transform: uppercase;
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-top: 4px;
}

.plan-currency {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-red);
}

.plan-price-val {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-primary);
}

.plan-billing-cycle {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Recommended Tier Column */
.plans-table th.col-pro,
.plans-table td.col-pro {
  background-color: var(--accent-red-tint);
  border-left: 2px solid var(--accent-red);
  border-right: 2px solid var(--accent-red);
}

.pro-badge {
  display: inline-block;
  align-self: flex-start;
  background-color: var(--accent-red);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.feature-title-cell {
  font-weight: 800;
  color: var(--text-primary);
}

.feature-desc-cell {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.table-cta-cell {
  padding-top: 24px;
  padding-bottom: 24px;
}

.table-cta-cell .btn-swiss-solid,
.table-cta-cell .btn-swiss-outline,
.table-cta-cell .btn-swiss-accent {
  width: 100%;
}

/* ==========================================================================
   SECTION 06: SEO TECHNICAL ESSAYS / ARTICLES DIRECTORY
   ========================================================================== */

.articles-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.article-card {
  border: 1px solid var(--border-black);
  background-color: var(--bg-canvas);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

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

.article-top-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-category {
  color: var(--accent-red);
  text-transform: uppercase;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.article-title a:hover {
  color: var(--accent-red);
}

.article-excerpt {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-body);
  margin-bottom: 24px;
}

.article-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--border-grid);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.article-read-link {
  font-weight: 800;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-read-link:hover {
  color: var(--accent-red);
}

/* ==========================================================================
   SECTION 07: USER TESTIMONIALS & AUDIT LOGS
   ========================================================================== */

.testimonials-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  border: 1px solid var(--border-black);
  padding: 28px 24px;
  background-color: var(--bg-canvas);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-body);
  margin-bottom: 24px;
  font-style: normal;
}

.testimonial-author-block {
  border-top: 1px solid var(--border-grid);
  padding-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.author-info strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-primary);
}

.author-info span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.verify-stamp {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent-red);
  border: 1px solid var(--accent-red);
  padding: 2px 6px;
  text-transform: uppercase;
}

/* ==========================================================================
   SECTION 08: FREQUENTLY ASKED QUESTIONS (FAQ ACCORDION)
   ========================================================================== */

.faq-section {
  padding: 80px 0;
  border-bottom: 2px solid var(--border-black);
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 2px solid var(--border-black);
}

.faq-item {
  border-bottom: 1px solid var(--border-grid);
}

.faq-item:last-child {
  border-bottom: 2px solid var(--border-black);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  background: transparent;
  transition: color 0.15s ease;
}

.faq-trigger:hover {
  color: var(--accent-red);
}

.faq-num {
  font-family: var(--font-mono);
  color: var(--accent-red);
  font-weight: 700;
  margin-right: 12px;
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-left: 16px;
}

.faq-content {
  display: none;
  padding-bottom: 24px;
  padding-left: 42px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-body);
}

.faq-item.is-open .faq-content {
  display: block;
}

.faq-item.is-open .faq-trigger {
  color: var(--accent-red);
}

/* ==========================================================================
   FOOTER (STRICT SWISS DIRECTORY & PBN BACKLINKS)
   ========================================================================== */

.site-footer {
  background-color: var(--bg-canvas);
  padding: 64px 0 32px 0;
  border-top: 2px solid var(--border-black);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-grid);
}

@media (min-width: 768px) {
  .footer-top-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-red);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link-list a {
  font-size: 0.875rem;
  color: var(--text-body);
  font-weight: 600;
}

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

/* Mandatory PBN Friends Links */
.footer-pbn-bar {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-grid);
  text-align: center;
}

.pbn-statement {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 600;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.pbn-statement .pbn-link {
  color: var(--accent-red);
  font-weight: 800;
  text-decoration: underline;
}

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

.footer-bottom-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .footer-bottom-bar {
    flex-direction: row;
  }
}

/* ==========================================================================
   ARTICLE & SUBPAGE STYLING (FOR STANDALONE PAGES)
   ========================================================================== */

.page-masthead {
  padding: 48px 0 32px 0;
  border-bottom: 2px solid var(--border-black);
  margin-bottom: 48px;
}

.breadcrumb-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.breadcrumb-line a {
  color: var(--text-primary);
  font-weight: 700;
}

.breadcrumb-line a:hover {
  color: var(--accent-red);
}

.page-main-headline {
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .page-main-headline {
    font-size: 3rem;
  }
}

.page-lead-meta {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 760px;
}

.content-article-body {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding-bottom: 80px;
}

.content-article-body h2 {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-black);
  text-transform: uppercase;
}

.content-article-body h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 12px;
}

.content-article-body p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 20px;
}

.content-article-body ul,
.content-article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.content-article-body li {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-body);
  margin-bottom: 8px;
}

.content-article-body blockquote {
  border-left: 4px solid var(--accent-red);
  padding: 16px 20px;
  background-color: var(--bg-subtle);
  margin: 24px 0;
  font-size: 1rem;
  color: var(--text-secondary);
}

.article-cta-box {
  margin: 48px 0;
  padding: 32px;
  border: 2px solid var(--border-black);
  background-color: var(--bg-subtle);
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.5rem;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.article-cta-box p {
  max-width: 540px;
  margin: 0 auto 24px auto;
  color: var(--text-muted);
}

/* Editorial Subpages & Article Layouts (Swiss Typographic) */
.top-edition-bar {
  background-color: var(--bg-dark);
  color: var(--text-on-dark);
  padding: 8px 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-bottom: 1px solid var(--border-black);
}

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

.edition-tag {
  background-color: var(--accent-red);
  color: #ffffff;
  padding: 2px 6px;
  font-weight: 700;
  margin-right: 8px;
}

.article-header-hero {
  padding: 40px 0 24px 0;
  border-bottom: 2px solid var(--border-black);
  margin-bottom: 40px;
}

.article-hero-title {
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
}

@media (min-width: 768px) {
  .article-hero-title {
    font-size: 3rem;
  }
}

.article-meta-byline {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-body-layout,
.page-content-wrapper {
  max-width: 860px;
  margin: 0 auto 80px auto;
}

.article-content,
.page-article-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-body);
}

.article-content h2,
.page-article-body h2 {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-top: 48px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-black);
  text-transform: uppercase;
}

.article-content h3,
.page-article-body h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 32px;
  margin-bottom: 12px;
}

.article-content p,
.page-article-body p {
  margin-bottom: 20px;
}

.article-content ul,
.article-content ol,
.page-article-body ul,
.page-article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-content li,
.page-article-body li {
  margin-bottom: 8px;
}

.article-lead-box,
.article-key-takeaways {
  border: 2px solid var(--border-black);
  padding: 24px;
  background-color: var(--bg-subtle);
  margin: 32px 0;
}

.article-key-takeaways h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-red);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--accent-red);
  color: #ffffff;
  border: 2px solid var(--accent-red);
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.btn-cta:hover {
  background-color: var(--bg-dark);
  border-color: var(--border-black);
}