/* ==========================================================================
   FlowerCloud 花云 - 信号卡片通信界面设计系统 (Signal-Card Interface)
   Color Palette:
   - White: #FFFFFF
   - Deep Petrol: #224B56
   - Muted Tangerine: #DA9060
   - Pale Cloud: #EFF5F3
   ========================================================================== */

:root {
  --color-white: #FFFFFF;
  --color-petrol: #224B56;
  --color-petrol-dark: #18373F;
  --color-petrol-light: #2E5F6D;
  --color-tangerine: #DA9060;
  --color-tangerine-hover: #C57E4E;
  --color-tangerine-soft: #F9EFE7;
  --color-cloud: #EFF5F3;
  --color-cloud-border: #D7E5E1;
  --color-cloud-surface: #F7FAF9;
  --color-text-main: #1D2A2E;
  --color-text-muted: #546B72;
  --color-text-light: #7E939A;
  
  --font-heading: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Courier New', monospace;

  --h1-desktop: 51px;
  --h1-mobile: 34px;
  --body-size: 17px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  --shadow-subtle: 0 4px 16px rgba(34, 75, 86, 0.06);
  --shadow-card: 0 8px 24px rgba(34, 75, 86, 0.08);
  --shadow-hover: 0 12px 32px rgba(34, 75, 86, 0.12);

  --transition-normal: 0.25s ease;
  --max-width: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--body-size);
  line-height: 1.68;
  color: var(--color-text-main);
  background-color: #F8FAF9;
  background-image: url('../assets/flower-bg.svg');
  background-repeat: repeat-y;
  background-position: top center;
  background-size: 1920px auto;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-petrol);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a:hover {
  color: var(--color-tangerine);
}

img, svg {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

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

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-petrol);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 {
  font-size: var(--h1-mobile);
}

@media (min-width: 992px) {
  h1 {
    font-size: var(--h1-desktop);
  }
}

h2 {
  font-size: 28px;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  h2 {
    font-size: 34px;
  }
}

h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

@media (min-width: 768px) {
  h3 {
    font-size: 22px;
  }
}

.tabular-nums {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding: 64px 0;
}

@media (min-width: 992px) {
  .section {
    padding: 88px 0;
  }
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 48px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-tangerine);
  background-color: var(--color-tangerine-soft);
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid rgba(218, 144, 96, 0.25);
  margin-bottom: 14px;
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-tangerine);
}

.section-desc {
  font-size: 17px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 26px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  text-align: center;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-tangerine);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(218, 144, 96, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-tangerine-hover);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(218, 144, 96, 0.35);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-petrol);
  border-color: var(--color-cloud-border);
}

.btn-secondary:hover {
  border-color: var(--color-petrol);
  color: var(--color-petrol);
  background-color: var(--color-cloud);
}

.btn-petrol {
  background-color: var(--color-petrol);
  color: var(--color-white);
}

.btn-petrol:hover {
  background-color: var(--color-petrol-dark);
  color: var(--color-white);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-cloud-border);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-petrol);
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
}

.brand-logo svg {
  width: 32px;
  height: 32px;
}

.brand-tagline {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-muted);
  border-left: 1px solid var(--color-cloud-border);
  padding-left: 10px;
  margin-left: 2px;
  display: none;
}

@media (min-width: 576px) {
  .brand-tagline {
    display: inline-block;
  }
}

.main-nav {
  display: none;
}

@media (min-width: 992px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
  }

  .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-petrol);
    padding: 6px 0;
    position: relative;
  }

  .nav-link:hover,
  .nav-link.active {
    color: var(--color-tangerine);
  }

  .nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-tangerine);
    border-radius: 2px;
  }
}

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

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  background-color: var(--color-cloud);
  border: 1px solid var(--color-cloud-border);
  cursor: pointer;
}

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

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-petrol);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation Drawer */
.mobile-nav-drawer {
  display: none;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-cloud-border);
  padding: 20px;
}

.mobile-nav-drawer.open {
  display: block;
}

@media (min-width: 992px) {
  .mobile-nav-drawer {
    display: none !important;
  }
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.mobile-nav-list a {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-petrol);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.mobile-nav-list a:hover {
  background-color: var(--color-cloud);
  color: var(--color-tangerine);
}

/* Signal Card Concept Styles */
.signal-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.signal-card:hover {
  border-color: rgba(34, 75, 86, 0.25);
  box-shadow: var(--shadow-hover);
}

.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background-color: var(--color-cloud);
  border-bottom: 1px solid var(--color-cloud-border);
  border-top-left-radius: var(--radius-md);
  border-top-right-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-petrol);
}

.card-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-tangerine);
}

.indicator-dot.active {
  background-color: #38A169;
}

/* ==========================================================================
   Hero Section: Left Copy & Right 3-Module Signal Dashboard
   ========================================================================== */
.hero-section {
  padding: 48px 0 64px 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.72) 0%, rgba(239, 245, 243, 0.65) 100%);
  border-bottom: 1px solid var(--color-cloud-border);
}

@media (min-width: 992px) {
  .hero-section {
    padding: 72px 0 88px 0;
  }
}

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

@media (min-width: 992px) {
  .hero-grid {
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
  }
}

.hero-copy {
  max-width: 600px;
}

.hero-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-cloud);
  border: 1px solid var(--color-cloud-border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-petrol);
  margin-bottom: 20px;
}

.hero-title {
  margin-bottom: 20px;
  color: var(--color-petrol);
}

.hero-title span {
  color: var(--color-tangerine);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

.hero-highlights {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--color-cloud-border);
}

@media (min-width: 480px) {
  .hero-highlights {
    grid-template-columns: repeat(3, 1fr);
  }
}

.hero-highlight-item {
  display: flex;
  flex-direction: column;
}

.hero-highlight-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-light);
  text-transform: uppercase;
}

.hero-highlight-val {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-petrol);
  margin-top: 2px;
}

/* Stacked Signal Modules Dashboard */
.signal-dashboard {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.module-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-subtle);
  position: relative;
  overflow: hidden;
}

.module-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.module-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-petrol);
  background-color: var(--color-cloud);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-cloud-border);
  text-transform: uppercase;
}

.module-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-petrol);
}

.route-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background-color: var(--color-cloud);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--color-cloud-border);
}

.route-node {
  display: flex;
  flex-direction: column;
}

.route-node-id {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-light);
}

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

.route-arrow {
  color: var(--color-tangerine);
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-family: var(--font-mono);
}

.route-arrow svg {
  width: 20px;
  height: 20px;
}

/* Illustrative Region Chips */
.region-chips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 10px;
}

@media (min-width: 480px) {
  .region-chips-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.region-chip {
  padding: 10px;
  background-color: var(--color-cloud-surface);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

.region-code {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-tangerine);
}

.region-name {
  font-size: 13px;
  color: var(--color-petrol);
  font-weight: 600;
  margin-top: 2px;
}

.region-desc {
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Waveform Canvas & Animation */
.waveform-container {
  margin-top: 12px;
  padding: 12px;
  background-color: var(--color-petrol);
  border-radius: var(--radius-sm);
  position: relative;
}

.waveform-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-cloud);
  opacity: 0.8;
  margin-bottom: 6px;
}

.waveform-svg {
  width: 100%;
  height: 48px;
  display: block;
}

.wave-path-bg {
  stroke: rgba(239, 245, 243, 0.2);
  stroke-width: 1.5;
  fill: none;
}

.wave-path-active {
  stroke: var(--color-tangerine);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: waveCycle 6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes waveCycle {
  0% {
    stroke-dashoffset: 600;
  }
  50% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: -600;
  }
}

@media (prefers-reduced-motion: reduce) {
  .wave-path-active {
    animation: none !important;
    stroke-dashoffset: 0 !important;
  }
  .signal-card, .btn {
    transition: none !important;
  }
}

/* ==========================================================================
   Advantages Section: 1 Large Module + 2 Small Explanatory Modules
   ========================================================================== */
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 992px) {
  .advantages-grid {
    grid-template-columns: 1.25fr 1fr;
  }
}

.adv-large-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.adv-card-badge {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-tangerine);
  background-color: var(--color-tangerine-soft);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 16px;
  font-weight: 600;
}

.adv-large-card h3 {
  font-size: 26px;
  color: var(--color-petrol);
  margin-bottom: 14px;
}

.adv-large-card p {
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 24px;
}

.adv-feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 12px;
}

@media (min-width: 576px) {
  .adv-feature-list {
    grid-template-columns: 1fr 1fr;
  }
}

.adv-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background-color: var(--color-cloud);
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-cloud-border);
}

.adv-check-icon {
  width: 20px;
  height: 20px;
  color: var(--color-tangerine);
  flex-shrink: 0;
  margin-top: 2px;
}

.adv-feature-text strong {
  display: block;
  font-size: 15px;
  color: var(--color-petrol);
  margin-bottom: 2px;
}

.adv-feature-text span {
  font-size: 13px;
  color: var(--color-text-muted);
}

.adv-side-stack {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.adv-small-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-subtle);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.adv-small-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-tangerine);
}

.adv-small-card h3 {
  font-size: 20px;
  color: var(--color-petrol);
  margin-bottom: 10px;
}

.adv-small-card p {
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ==========================================================================
   AI & Streaming Use Cases (Tab-like Headings, 100% Crawlable)
   ========================================================================== */
.usecases-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.usecase-nav-bar {
  display: flex;
  border-bottom: 2px solid var(--color-cloud-border);
  gap: 8px;
}

.usecase-nav-tab {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  padding: 12px 24px;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.usecase-nav-tab.active {
  color: var(--color-petrol);
  border-bottom-color: var(--color-tangerine);
  background-color: rgba(239, 245, 243, 0.5);
}

.usecase-content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

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

.usecase-panel {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.usecase-header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-cloud-border);
}

.usecase-header h3 {
  font-size: 24px;
  color: var(--color-petrol);
  margin-bottom: 6px;
}

.usecase-header p {
  font-size: 15px;
  color: var(--color-text-muted);
}

.usecase-item-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.usecase-tool-item {
  padding: 16px;
  background-color: var(--color-cloud-surface);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-cloud-border);
}

.tool-name-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}

.tool-name {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-petrol);
}

.tool-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 2px 8px;
  background-color: var(--color-cloud);
  border-radius: 4px;
  color: var(--color-tangerine);
  font-weight: 600;
}

.tool-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Pricing Section: Wide Side-by-Side Comparison
   ========================================================================== */
.pricing-notice {
  text-align: center;
  max-width: 720px;
  margin: -24px auto 36px auto;
  padding: 10px 16px;
  background-color: var(--color-cloud);
  border: 1px dashed var(--color-cloud-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-text-muted);
}

.pricing-notice strong {
  color: var(--color-petrol);
}

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

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

.pricing-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.pricing-card.popular {
  border-color: var(--color-tangerine);
  box-shadow: 0 8px 30px rgba(218, 144, 96, 0.15);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-tangerine);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 999px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.plan-header {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-cloud-border);
}

.plan-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-petrol);
  margin-bottom: 8px;
}

.plan-price {
  margin: 12px 0;
}

.plan-currency {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-petrol);
  vertical-align: top;
}

.plan-amount {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 800;
  color: var(--color-petrol);
}

.plan-period {
  font-size: 14px;
  color: var(--color-text-muted);
}

.plan-desc {
  font-size: 13px;
  color: var(--color-text-muted);
}

.plan-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-main);
}

.plan-feature-row svg {
  width: 18px;
  height: 18px;
  color: var(--color-tangerine);
  flex-shrink: 0;
  margin-top: 3px;
}

.editorial-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  background-color: var(--color-cloud);
  color: var(--color-text-muted);
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 4px;
}

/* ==========================================================================
   Nine SEO Article Cards Section (3/2/1 Column Layout)
   ========================================================================== */
.articles-section {
  background-color: rgba(255, 255, 255, 0.85);
  border-top: 1px solid var(--color-cloud-border);
  border-bottom: 1px solid var(--color-cloud-border);
}

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

@media (min-width: 640px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

.article-card {
  background-color: var(--color-cloud-surface);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-tangerine);
  background-color: var(--color-white);
  box-shadow: var(--shadow-card);
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.article-category {
  color: var(--color-tangerine);
  font-weight: 600;
}

.article-card h3 {
  font-size: 18px;
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card h3 a {
  color: var(--color-petrol);
}

.article-card:hover h3 a {
  color: var(--color-tangerine);
}

.article-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--color-cloud-border);
  font-size: 13px;
  color: var(--color-text-muted);
}

.read-more-link {
  font-weight: 600;
  color: var(--color-petrol);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-card:hover .read-more-link {
  color: var(--color-tangerine);
}

/* ==========================================================================
   Testimonials (Real / Visibly Sample Scenarios)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

.testimonial-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-subtle);
}

.test-sample-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-light);
  background-color: var(--color-cloud);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 12px;
}

.test-quote {
  font-size: 15px;
  color: var(--color-text-main);
  line-height: 1.7;
  margin-bottom: 16px;
}

.test-author {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--color-cloud-border);
}

.test-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-petrol);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.test-meta strong {
  display: block;
  font-size: 14px;
  color: var(--color-petrol);
}

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

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: border-color var(--transition-normal);
}

.faq-item[open] {
  border-color: var(--color-petrol);
}

.faq-question {
  padding: 18px 22px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-petrol);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--color-tangerine);
  transition: transform var(--transition-normal);
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 22px 20px 22px;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   Footer & PBN Backlink Styling
   ========================================================================== */
.site-footer {
  background-color: var(--color-petrol);
  color: var(--color-cloud);
  padding: 64px 0 32px 0;
  border-top: 3px solid var(--color-tangerine);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

.footer-brand h4 {
  font-size: 20px;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 14px;
  color: #B5CBD1;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 15px;
  color: var(--color-white);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #B5CBD1;
  font-size: 14px;
  transition: color var(--transition-normal);
}

.footer-links a:hover {
  color: var(--color-tangerine);
}

.footer-pbn-section {
  padding: 24px 0;
  border-top: 1px solid rgba(239, 245, 243, 0.15);
  border-bottom: 1px solid rgba(239, 245, 243, 0.15);
  margin-bottom: 24px;
  text-align: center;
}

.footer-pbn-title {
  font-size: 13px;
  color: #8CAAB2;
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.footer-pbn-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.footer-pbn-links a {
  color: #FFFFFF;
  font-weight: 600;
  font-size: 14px;
  background-color: rgba(255, 255, 255, 0.08);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all var(--transition-normal);
}

.footer-pbn-links a:hover {
  background-color: var(--color-tangerine);
  color: var(--color-white);
  border-color: var(--color-tangerine);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: #8CAAB2;
}

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

/* ==========================================================================
   Article Detail Page Template Styles
   ========================================================================== */
.article-header {
  padding: 48px 0 32px 0;
  background-color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--color-cloud-border);
}

.breadcrumb-nav {
  margin-bottom: 16px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--color-text-light);
}

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

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

.breadcrumb-nav span {
  margin: 0 6px;
}

.article-content-wrapper {
  padding: 48px 0 80px 0;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 992px) {
  .article-layout {
    grid-template-columns: 1fr 320px;
  }
}

.article-body {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  box-shadow: var(--shadow-subtle);
}

@media (min-width: 768px) {
  .article-body {
    padding: 48px 40px;
  }
}

.article-body h2 {
  font-size: 24px;
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-cloud-border);
}

.article-body h3 {
  font-size: 19px;
  margin-top: 24px;
  margin-bottom: 12px;
}

.article-body p {
  margin-bottom: 20px;
  line-height: 1.8;
  color: #2D3E42;
}

.article-body ul, .article-body ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-body blockquote {
  border-left: 4px solid var(--color-tangerine);
  background-color: var(--color-cloud);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  font-size: 15px;
  color: var(--color-petrol);
}

.article-body .article-image-box {
  margin: 28px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-cloud-border);
  background-color: var(--color-cloud);
  padding: 16px;
  text-align: center;
}

.article-body .article-image-box figcaption {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background-color: var(--color-white);
  border: 1px solid var(--color-cloud-border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-subtle);
}

.sidebar-widget h4 {
  font-size: 16px;
  color: var(--color-petrol);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-cloud-border);
}

.related-articles-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-articles-list a {
  font-size: 14px;
  color: var(--color-text-main);
  line-height: 1.5;
  transition: color var(--transition-normal);
}

.related-articles-list a:hover {
  color: var(--color-tangerine);
}