/* ==========================================================================
   一元机场 - 极简现代化高转化落地页 Design System
   配色体系严格参考 Palette 视觉规范：
   - 暖橙/琥珀色: #FF7E36, #F2994A
   - 皇家暗紫色: #2A0845, #4A2E80
   - 梦幻紫罗兰: #7B2CBF, #9D4EDD
   - 柔和薰衣草: #A594F9, #E9E4F8
   - 冰纯白背景: #F8F9FE, #FFFFFF
   ========================================================================== */

:root {
  /* Color Tokens */
  --primary-orange: #FF7E36;
  --primary-orange-hover: #E56A25;
  --accent-amber: #F2994A;
  
  --deep-purple: #2A0845;
  --royal-purple: #4A2E80;
  --violet-main: #7B2CBF;
  --violet-light: #9D4EDD;
  --lavender-soft: #A594F9;
  --lavender-bg: #F3EEFB;
  
  --bg-main: #F8F9FE;
  --bg-card: #FFFFFF;
  --bg-glass: rgba(255, 255, 255, 0.85);
  
  --text-dark: #1A162B;
  --text-muted: #5C5670;
  --text-light: #8E88A6;
  --border-light: #EBE7F5;
  --border-hover: #CDB4DB;

  --shadow-sm: 0 4px 12px rgba(74, 46, 128, 0.04);
  --shadow-md: 0 12px 32px rgba(74, 46, 128, 0.08);
  --shadow-lg: 0 20px 48px rgba(74, 46, 128, 0.12);
  --shadow-orange: 0 8px 24px rgba(255, 126, 54, 0.28);
  --shadow-purple: 0 8px 24px rgba(123, 44, 191, 0.25);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--violet-main);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-orange);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container Utility */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography & Badges */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 600;
  background: linear-gradient(135deg, rgba(255,126,54,0.12), rgba(123,44,191,0.12));
  color: var(--royal-purple);
  border: 1px solid rgba(123,44,191,0.2);
}

.badge-pill .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #22C55E;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse-ring 1.8s infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(34, 197, 94, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
  }
}

.section-title {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-title h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--deep-purple);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-title p {
  font-size: 1.125rem;
  color: var(--text-muted);
}

/* Button UI Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-orange) 0%, var(--accent-amber) 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(255, 126, 54, 0.4);
  color: #FFFFFF;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--royal-purple) 0%, var(--violet-main) 100%);
  color: #FFFFFF;
  box-shadow: var(--shadow-purple);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(123, 44, 191, 0.4);
  color: #FFFFFF;
}

.btn-outline {
  background: transparent;
  color: var(--royal-purple);
  border: 2px solid var(--royal-purple);
}

.btn-outline:hover {
  background: var(--royal-purple);
  color: #FFFFFF;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

/* Header & Navigation Bar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--deep-purple);
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-orange), var(--violet-main));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 1.25rem;
  box-shadow: 0 6px 16px rgba(123, 44, 191, 0.3);
}

.logo-domain {
  font-size: 0.8rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary-orange), var(--violet-main));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-orange), var(--violet-main));
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--violet-main);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-dark);
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 80px 0 100px 0;
  position: relative;
  background: radial-gradient(circle at 10% 20%, rgba(255, 126, 54, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(123, 44, 191, 0.08) 0%, transparent 40%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  max-width: 640px;
}

.hero-content h1 {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.2;
  color: var(--deep-purple);
  margin: 20px 0;
  letter-spacing: -0.03em;
}

.hero-content h1 .gradient-text {
  background: linear-gradient(135deg, var(--primary-orange) 0%, var(--violet-main) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-features-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-muted);
}

.hero-feature-item svg {
  color: var(--primary-orange);
  flex-shrink: 0;
}

.hero-visual-card {
  position: relative;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(145deg, #FFFFFF, #F5F1FD);
}

.speed-metric-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--royal-purple), var(--deep-purple));
  color: #FFFFFF;
  margin-bottom: 24px;
}

.metric-item {
  text-align: center;
}

.metric-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-amber);
}

.metric-label {
  font-size: 0.75rem;
  opacity: 0.85;
}

.server-node-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.node-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 0.9rem;
}

.flag-icon {
  font-size: 1.25rem;
}

.ping-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: #22C55E;
  background: rgba(34, 197, 94, 0.1);
  padding: 2px 10px;
  border-radius: 20px;
}

/* Core Advantages Section */
.advantages-section {
  padding: 90px 0;
  background-color: #FFFFFF;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.advantage-card {
  background: var(--bg-main);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-orange), var(--violet-main));
  opacity: 0;
  transition: var(--transition);
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--lavender-soft);
  background: #FFFFFF;
}

.advantage-card:hover::before {
  opacity: 1;
}

.advantage-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--lavender-bg), #FFFFFF);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--violet-main);
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.advantage-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--deep-purple);
  margin-bottom: 12px;
}

.advantage-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Pricing Section - EXACT Match to Image 2 Reference */
.pricing-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-main) 0%, #F1ECFA 100%);
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--violet-light);
}

.pricing-card.featured {
  border: 2px solid var(--primary-orange);
  box-shadow: 0 16px 40px rgba(255, 126, 54, 0.18);
}

.pricing-header {
  padding: 28px 28px 20px 28px;
  border-bottom: 1px solid #F0EEF8;
  position: relative;
}

.pricing-plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text-dark);
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pricing-price span.currency {
  font-size: 1.5rem;
  font-weight: 700;
}

.pricing-period {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 500;
}

/* Mascot Node Cat Icon matching Image 2 */
.node-cat-mascot {
  position: absolute;
  top: 24px;
  right: 24px;
  text-align: center;
}

.node-cat-svg {
  width: 64px;
  height: 64px;
}

.node-cat-label {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-top: -4px;
}

.pricing-body {
  padding: 28px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pricing-features-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.925rem;
  color: #333333;
}

.pricing-feature-item .icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-feature-item.highlight-green {
  color: #2E7D32;
  font-weight: 600;
}

/* Target User Groups Section */
.user-groups-section {
  padding: 90px 0;
  background-color: #FFFFFF;
}

.user-groups-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.user-group-card {
  background: var(--bg-main);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  text-align: center;
}

.user-group-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  background: #FFFFFF;
  border-color: var(--primary-orange);
}

.user-group-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 126, 54, 0.1), rgba(123, 44, 191, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary-orange);
  margin: 0 auto 18px auto;
}

.user-group-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--deep-purple);
  margin-bottom: 10px;
}

.user-group-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Article Hub Section - Redesigned Modern Cards */
.articles-section {
  padding: 90px 0;
  background-color: var(--bg-main);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--violet-light);
}

.article-card-header {
  padding: 20px 24px 16px 24px;
  background: linear-gradient(135deg, rgba(123, 44, 191, 0.06) 0%, rgba(255, 126, 54, 0.06) 100%);
  border-bottom: 1px solid #F0EEF8;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--royal-purple), var(--violet-main));
  color: #FFFFFF;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.article-read-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-card-body {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card-body h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 12px;
  line-height: 1.45;
}

.article-card-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.article-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.chip {
  font-size: 0.75rem;
  background: var(--lavender-bg);
  color: var(--royal-purple);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-top: 14px;
  border-top: 1px solid #F0EEF8;
}

.article-read-more {
  font-weight: 700;
  color: var(--violet-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
}

.article-read-more:hover {
  color: var(--primary-orange);
}

/* FAQ Section */
.faq-section {
  padding: 90px 0;
  background-color: #FFFFFF;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.active {
  border-color: var(--violet-main);
  box-shadow: var(--shadow-sm);
  background: #FFFFFF;
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--deep-purple);
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.2rem;
  transition: var(--transition);
  color: var(--violet-main);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--primary-orange);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 28px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 400px;
  padding: 0 28px 22px 28px;
}

/* CTA Banner Section */
.cta-banner-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--deep-purple) 0%, var(--royal-purple) 50%, var(--violet-main) 100%);
  color: #FFFFFF;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner-content h2 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-banner-content p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 680px;
  margin: 0 auto 36px auto;
}

/* Footer Section */
.site-footer {
  background-color: var(--deep-purple);
  color: #D1CDDF;
  padding: 80px 0 30px 0;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-col-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-col-brand p {
  line-height: 1.7;
  color: #A9A4C0;
  margin-bottom: 24px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
}

.footer-col h4::after {
  content: '';
  display: block;
  width: 24px;
  height: 3px;
  background: var(--primary-orange);
  margin-top: 8px;
  border-radius: 2px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: #A9A4C0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-orange);
  transform: translateX(4px);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #8E87A8;
  font-size: 0.85rem;
}

/* Article Template Page Styles */
.article-header {
  padding: 60px 0 40px 0;
  background: linear-gradient(180deg, var(--bg-main) 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--border-light);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 20px;
}

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

.article-title-main {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--deep-purple);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.article-container {
  padding: 60px 0;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
}

.article-content {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  font-size: 1rem;
  line-height: 1.8;
  color: #2D273D;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--deep-purple);
  margin: 36px 0 18px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--lavender-bg);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--royal-purple);
  margin: 28px 0 14px 0;
}

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

.article-content ul, .article-content ol {
  margin: 0 0 24px 20px;
  list-style: disc;
}

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

.article-content code {
  background: var(--lavender-bg);
  color: var(--royal-purple);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: monospace;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-widget {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.sidebar-widget h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--deep-purple);
  margin-bottom: 16px;
}

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

.related-article-item {
  display: block;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-main);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
}

.related-article-item:hover {
  background: var(--lavender-bg);
  color: var(--violet-main);
}

/* Floating Action Button */
.floating-cta {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
}

.floating-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-orange), var(--accent-amber));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 8px 24px rgba(255, 126, 54, 0.4);
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.floating-btn:hover {
  transform: scale(1.1) rotate(10deg);
}

/* Toast Notice */
.toast-notice {
  position: fixed;
  top: 100px;
  right: 24px;
  z-index: 2000;
  background: var(--deep-purple);
  color: #FFFFFF;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  transform: translateX(150%);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast-notice.show {
  transform: translateX(0);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .advantages-grid, .pricing-grid, .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .user-groups-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #FFFFFF;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
  }

  .nav-links.active {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-content h1 {
    font-size: 2.1rem;
  }

  .advantages-grid, .pricing-grid, .articles-grid, .user-groups-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ==========================================================================
   GEO (Generative Engine Optimization) AI Quick Answer Box Styles
   ========================================================================== */
.geo-summary-box {
  background: linear-gradient(135deg, rgba(124, 77, 255, 0.06) 0%, rgba(255, 126, 54, 0.06) 100%);
  border: 1px solid rgba(124, 77, 255, 0.2);
  border-left: 4px solid var(--primary-orange);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 24px 0 32px 0;
  box-shadow: 0 4px 16px rgba(124, 77, 255, 0.05);
}

.geo-summary-box p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-dark);
}

.geo-summary-box strong {
  color: var(--violet-main);
  font-weight: 700;
}

.geo-summary-box a {
  color: var(--primary-orange);
  font-weight: 700;
  text-decoration: underline;
}