/* ==========================================================================
   闪连vpn (SHANLIAN VPN) - 折纸风格 (Folded-Paper Identity) 样式表
   Colors:
     - Bright White: #FFFFFF
     - Deep Auburn (深红棕): #633F35
     - Muted Blue-Green (柔和蓝绿): #678F8D
     - Paper Shadow (纸张阴影): #EEE9E3
   ========================================================================== */

:root {
  --color-white: #FFFFFF;
  --color-paper-bg: #FDFBF7;
  --color-paper-warm: #F7F4EE;
  --color-paper-shadow: #EEE9E3;
  --color-paper-border: #D8D0C5;
  --color-auburn: #633F35;
  --color-auburn-light: #7E554A;
  --color-blue-green: #678F8D;
  --color-blue-green-light: #83A9A7;
  --color-text-main: #332723;
  --color-text-muted: #665A55;
  --color-text-light: #8C7E77;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", "STSong", serif;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --max-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-paper: 0 4px 12px rgba(99, 63, 53, 0.06), 0 1px 3px rgba(238, 233, 227, 0.8);
  --shadow-paper-hover: 0 8px 24px rgba(99, 63, 53, 0.12), 0 2px 6px rgba(238, 233, 227, 0.9);
  --shadow-paper-deep: -4px 6px 18px rgba(99, 63, 53, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  color: var(--color-text-main);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, .serif-heading {
  font-family: var(--font-serif);
  color: var(--color-auburn);
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: 56px;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

h2 {
  font-size: 32px;
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}

h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 16px;
}

a {
  color: var(--color-auburn);
  text-decoration: none;
  transition: color 0.2s ease, text-decoration 0.2s ease;
}

a:hover {
  color: var(--color-blue-green);
}

.label-tag {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-blue-green);
  background-color: var(--color-paper-warm);
  border: 1px solid var(--color-paper-border);
  padding: 4px 10px;
  border-radius: 2px;
  margin-bottom: 12px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-paper-shadow);
  box-shadow: 0 2px 8px rgba(238, 233, 227, 0.5);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-auburn);
}

.logo-fold-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--color-auburn) 50%, var(--color-blue-green) 50%);
  clip-path: polygon(0 0, 100% 0, 80% 100%, 0 80%);
  display: inline-block;
}

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

.nav-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-main);
  padding: 6px 0;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-auburn);
  transition: width 0.25s ease;
}

.nav-menu a:hover::after {
  width: 100%;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-auburn);
  color: var(--color-white) !important;
  border: 1px solid var(--color-auburn);
  box-shadow: 2px 3px 0 var(--color-paper-shadow);
}

.btn-primary:hover {
  background-color: var(--color-auburn-light);
  transform: translateY(-2px);
  box-shadow: 3px 5px 0 var(--color-paper-border);
}

.btn-secondary {
  background-color: var(--color-paper-warm);
  color: var(--color-auburn) !important;
  border: 1px solid var(--color-paper-border);
}

.btn-secondary:hover {
  background-color: var(--color-white);
  border-color: var(--color-blue-green);
  color: var(--color-blue-green) !important;
  transform: translateY(-2px);
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--color-auburn);
  cursor: pointer;
  padding: 8px;
}

/* Hero Section */
.hero-section {
  padding: 80px 0 60px;
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-paper-warm) 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  max-width: 540px;
}

.hero-copy .hero-subtitle {
  font-size: 19px;
  color: var(--color-text-muted);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Hero Dashboard (CSS Paper Fold Panels - Clean Layered Layout) */
.hero-dashboard-container {
  position: relative;
  width: 100%;
  perspective: 1000px;
  padding: 10px 0;
}

.hero-paper-panel {
  border-radius: 4px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-paper-panel.panel-base {
  position: absolute;
  top: -8px;
  left: 2%;
  width: 96%;
  height: 104%;
  background-color: var(--color-paper-warm);
  border: 1px solid var(--color-paper-border);
  transform: rotate(-2deg);
  z-index: 1;
  box-shadow: var(--shadow-paper);
}

.hero-paper-panel.panel-main {
  position: relative;
  z-index: 2;
  background-color: var(--color-white);
  border: 1px solid var(--color-paper-border);
  border-top: 5px solid var(--color-auburn);
  padding: 24px;
  transform: rotate(0.8deg);
  box-shadow: var(--shadow-paper-hover);
  animation: heroPanelOpen 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-paper-panel.panel-main::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 28px 28px 0;
  border-color: transparent var(--color-paper-shadow) transparent transparent;
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--color-paper-border);
}

.dashboard-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dashboard-fold-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  background-color: var(--color-auburn);
  color: var(--color-white);
  padding: 2px 6px;
  border-radius: 2px;
}

.dashboard-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-auburn);
}

.dashboard-status-tag {
  font-size: 12px;
  color: var(--color-blue-green);
  background-color: rgba(103, 143, 141, 0.12);
  border: 1px solid rgba(103, 143, 141, 0.25);
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 600;
}

.dashboard-nodes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 18px;
}

.node-item {
  background-color: var(--color-paper-bg);
  border: 1px solid var(--color-paper-border);
  padding: 12px 14px;
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: 2px 2px 0 var(--color-paper-shadow);
}

.node-header {
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-flag {
  font-size: 18px;
}

.node-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text-main);
}

.node-badge {
  font-size: 12px;
  color: var(--color-text-muted);
  background-color: var(--color-paper-warm);
  padding: 2px 6px;
  border-radius: 2px;
  width: fit-content;
}

.dashboard-protocol-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-paper-warm);
  border: 1px solid var(--color-paper-border);
  border-left: 4px solid var(--color-blue-green);
  padding: 10px 14px;
  border-radius: 3px;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 8px;
}

.protocol-label {
  color: var(--color-text-muted);
  font-weight: 500;
}

.protocol-tags {
  display: flex;
  gap: 6px;
}

.proto-tag {
  background-color: var(--color-white);
  color: var(--color-auburn);
  border: 1px solid var(--color-paper-border);
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 12px;
  font-weight: 600;
}

.hero-paper-panel.panel-accent-slip {
  position: absolute;
  bottom: -12px;
  right: 16px;
  z-index: 3;
  background-color: var(--color-auburn);
  color: var(--color-white);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-paper);
  transform: rotate(-1.5deg);
  border-radius: 2px;
}

@keyframes heroPanelOpen {
  from {
    opacity: 0;
    transform: perspective(800px) rotateX(8deg) translateY(20px);
  }
  to {
    opacity: 1;
    transform: rotate(0.8deg);
  }
}

/* Sections Base */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background-color: var(--color-blue-green);
  margin: 12px auto 0;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 17px;
  margin-top: 10px;
}

/* Three Advantages Section */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.advantage-card {
  background-color: var(--color-paper-bg);
  border: 1px solid var(--color-paper-border);
  padding: 32px 24px;
  position: relative;
  box-shadow: var(--shadow-paper);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-paper-hover);
}

/* Fold 1: Top-Right Fold */
.fold-card-tr {
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.fold-card-tr::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 24px;
  height: 24px;
  background-color: var(--color-paper-shadow);
  border-bottom-left-radius: 2px;
  box-shadow: -2px 2px 4px rgba(0, 0, 0, 0.05);
}

/* Fold 2: Bottom-Left Fold */
.fold-card-bl {
  clip-path: polygon(0 24px, 24px 0, 100% 0, 100% 100%, 0 100%);
  border-left: 4px solid var(--color-blue-green);
}

.fold-card-bl::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  background-color: var(--color-paper-shadow);
}

/* Fold 3: Diagonal Fold Crease */
.fold-card-diag {
  border-top: 4px solid var(--color-auburn);
  background: linear-gradient(135deg, var(--color-paper-warm) 0%, var(--color-white) 100%);
}

.advantage-icon {
  font-size: 32px;
  margin-bottom: 20px;
  color: var(--color-auburn);
}

.advantage-card h3 {
  color: var(--color-auburn);
  margin-bottom: 12px;
}

.advantage-card p {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 0;
}

/* Global Nodes Continuous Unfolded Route Strip */
.nodes-section {
  background-color: var(--color-paper-warm);
  border-top: 1px solid var(--color-paper-shadow);
  border-bottom: 1px solid var(--color-paper-shadow);
}

.unfolded-route-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-white);
  border: 1px solid var(--color-paper-border);
  box-shadow: var(--shadow-paper);
  padding: 32px;
  position: relative;
  overflow-x: auto;
  gap: 16px;
}

.unfolded-route-strip::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 60px;
  right: 60px;
  height: 2px;
  background: dashed 2px var(--color-blue-green);
  z-index: 1;
}

.route-node-item {
  position: relative;
  z-index: 2;
  background-color: var(--color-paper-warm);
  border: 2px solid var(--color-auburn);
  padding: 16px 20px;
  min-width: 180px;
  text-align: center;
  box-shadow: 3px 3px 0 var(--color-paper-shadow);
}

.route-node-flag {
  font-size: 24px;
  margin-bottom: 6px;
}

.route-node-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-auburn);
}

.route-node-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.route-connector {
  position: relative;
  z-index: 2;
  color: var(--color-blue-green);
  font-weight: bold;
  font-size: 20px;
}

/* AI & Streaming Opposing Page Panels */
.opposing-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.panel-side {
  border: 1px solid var(--color-paper-border);
  padding: 36px;
  position: relative;
  box-shadow: var(--shadow-paper);
}

.panel-side-ai {
  background-color: #FAF6F3;
  border-top: 6px solid var(--color-auburn);
}

.panel-side-streaming {
  background-color: #F4F8F8;
  border-top: 6px solid var(--color-blue-green);
}

.panel-side-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--color-paper-border);
}

.panel-side-title {
  font-family: var(--font-serif);
  font-size: 24px;
}

.panel-side-ai .panel-side-title {
  color: var(--color-auburn);
}

.panel-side-streaming .panel-side-title {
  color: var(--color-blue-green);
}

.scenarios-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.scenario-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-paper-shadow);
  padding: 14px 16px;
  border-radius: 2px;
}

.scenario-card strong {
  display: block;
  font-size: 15px;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.scenario-card span {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.4;
  display: block;
}

/* Pricing Section - Flat Comparison Table */
.pricing-section {
  background-color: var(--color-paper-warm);
}

.pricing-table-wrapper {
  background-color: var(--color-white);
  border: 1px solid var(--color-paper-border);
  box-shadow: var(--shadow-paper);
  overflow-x: auto;
}

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

.flat-pricing-table th,
.flat-pricing-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--color-paper-shadow);
  font-size: 15px;
}

.flat-pricing-table th {
  background-color: var(--color-paper-bg);
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--color-auburn);
  font-weight: 700;
}

.flat-pricing-table tr:hover {
  background-color: rgba(247, 244, 238, 0.5);
}

.price-cell {
  white-space: nowrap;
}

.price-amount {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-auburn);
  font-weight: 700;
}

.price-period {
  font-size: 13px;
  color: var(--color-text-muted);
  font-weight: 400;
}

.placeholder-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-text-light);
  background-color: var(--color-paper-warm);
  border: 1px dashed var(--color-paper-border);
  padding: 2px 8px;
  border-radius: 2px;
}

/* SEO Cards Section (Folded Reading Slips) */
.seo-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.reading-slip-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-paper-border);
  position: relative;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-paper);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.reading-slip-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 24px;
  width: 32px;
  height: 8px;
  background-color: var(--color-blue-green);
}

.reading-slip-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-paper-hover);
}

.reading-slip-meta {
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
}

.reading-slip-card h3 {
  font-size: 19px;
  line-height: 1.4;
  margin-bottom: 12px;
}

.reading-slip-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.reading-slip-link {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-auburn);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.reading-slip-link:hover {
  color: var(--color-blue-green);
}

/* Testimonials Section */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background-color: var(--color-paper-bg);
  border: 1px solid var(--color-paper-border);
  padding: 24px;
  position: relative;
  box-shadow: var(--shadow-paper);
}

.testimonial-quote {
  font-size: 15px;
  color: var(--color-text-main);
  line-height: 1.6;
  font-style: italic;
  margin-bottom: 16px;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-paper-shadow);
  color: var(--color-auburn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-family: var(--font-serif);
}

.testimonial-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-auburn);
}

.testimonial-info span {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* FAQ Accordion Section */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-paper-border);
  margin-bottom: 12px;
  box-shadow: var(--shadow-paper);
}

.faq-button {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-auburn);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 20px;
  transition: transform 0.25s ease;
}

.faq-button[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 20px;
  display: none;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.7;
}

.faq-content[data-open="true"] {
  display: block;
}

/* Footer Section */
.site-footer {
  background-color: var(--color-auburn);
  color: var(--color-paper-warm);
  padding: 60px 0 30px;
  border-top: 4px solid var(--color-blue-green);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-white);
  margin-bottom: 20px;
  position: relative;
  display: inline-block;
}

.footer-col h4::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-blue-green);
  margin-top: 6px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #E2D7D2;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: #C5B6B0;
}

/* Article Page Layout Styles */
.article-header {
  padding: 60px 0 40px;
  background-color: var(--color-paper-warm);
  border-bottom: 1px solid var(--color-paper-shadow);
}

.breadcrumb {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-auburn);
}

.article-content-wrapper {
  padding: 60px 0;
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: 48px;
}

.article-main {
  font-size: 17px;
  line-height: 1.8;
}

.article-main h2 {
  font-size: 28px;
  margin: 36px 0 16px;
  border-bottom: 2px solid var(--color-paper-shadow);
  padding-bottom: 8px;
  display: block;
}

.article-main h3 {
  font-size: 22px;
  margin: 28px 0 12px;
  color: var(--color-auburn-light);
}

.article-main ul, .article-main ol {
  margin: 16px 0 24px 24px;
}

.article-main li {
  margin-bottom: 8px;
}

.article-main blockquote {
  background-color: var(--color-paper-warm);
  border-left: 4px solid var(--color-blue-green);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.article-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sidebar-widget {
  background-color: var(--color-paper-bg);
  border: 1px solid var(--color-paper-border);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-paper);
}

.sidebar-widget h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-auburn);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-paper-border);
}

.cta-box {
  background-color: var(--color-auburn);
  color: var(--color-white);
  padding: 28px 24px;
  text-align: center;
  border-radius: 4px;
}

.cta-box h3 {
  color: var(--color-white);
  margin-bottom: 12px;
}

.cta-box p {
  font-size: 14px;
  color: var(--color-paper-warm);
  margin-bottom: 20px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Responsive Styles (Breakpoints: 1024px, 768px, 430px, 390px, 375px) */
@media (max-width: 1024px) {
  h1 {
    font-size: 44px;
  }
  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .opposing-panels {
    grid-template-columns: 1fr;
  }
  .seo-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }
  .mobile-nav-toggle {
    display: block;
  }
  .nav-menu {
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-paper-border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    display: none;
    box-shadow: var(--shadow-paper-hover);
  }
  .nav-menu.is-active {
    display: flex;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-copy {
    max-width: 100%;
  }
  .dashboard-nodes-grid {
    grid-template-columns: 1fr;
  }
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  .seo-cards-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .article-content-wrapper {
    grid-template-columns: 1fr;
  }
  .unfolded-route-strip {
    flex-direction: column;
    align-items: stretch;
  }
  .unfolded-route-strip::before {
    display: none;
  }
  .route-connector {
    text-align: center;
    transform: rotate(90deg);
  }
  .scenarios-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

@media (max-width: 430px) {
  .container {
    padding: 0 16px;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .btn {
    width: 100%;
  }
  .flat-pricing-table th,
  .flat-pricing-table td {
    padding: 12px 14px;
    font-size: 14px;
  }
}