:root {
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  
  /* Creamy Alabaster Minimalist Palette (Light Mode - Default) */
  --bg-primary: #fffdf9;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #fcfaf6;
  --bg-glass: rgba(255, 253, 249, 0.88);
  --border-subtle: #f1ede4;
  --border-focus: #f59e0b;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-subtle: #94a3b8;
  
  /* Accents */
  --accent-amber: #f59e0b;
  --accent-amber-hover: #d97706;
  --accent-amber-light: #fef3c7;
  --accent-amber-soft: rgba(245, 158, 11, 0.1);
  
  --accent-sky: #0ea5e9;
  --accent-sky-hover: #0284c7;
  --accent-sky-light: #e0f2fe;
  --accent-sky-soft: rgba(14, 165, 233, 0.1);
  
  --brand-gradient: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  --sky-gradient: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
  
  /* Ambient Mesh Radial Blurs */
  --mesh-glow-1: radial-gradient(circle at 15% 10%, rgba(254, 243, 199, 0.55) 0%, rgba(254, 243, 199, 0) 50%);
  --mesh-glow-2: radial-gradient(circle at 85% 15%, rgba(224, 242, 254, 0.6) 0%, rgba(224, 242, 254, 0) 55%);
  --mesh-glow-3: radial-gradient(circle at 50% 80%, rgba(254, 243, 199, 0.35) 0%, rgba(224, 242, 254, 0) 50%);
  
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 30px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 18px 40px rgba(245, 158, 11, 0.12);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-surface: #0f172a;
  --bg-card: #131c31;
  --bg-card-hover: #19243d;
  --bg-glass: rgba(9, 13, 22, 0.9);
  --border-subtle: #1e293b;
  --border-focus: #f59e0b;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  
  --accent-amber: #fbbf24;
  --accent-amber-hover: #f59e0b;
  --accent-amber-light: rgba(245, 158, 11, 0.16);
  --accent-amber-soft: rgba(245, 158, 11, 0.08);
  
  --accent-sky: #38bdf8;
  --accent-sky-hover: #0ea5e9;
  --accent-sky-light: rgba(14, 165, 233, 0.16);
  --accent-sky-soft: rgba(14, 165, 233, 0.08);
  
  --mesh-glow-1: radial-gradient(circle at 15% 10%, rgba(245, 158, 11, 0.15) 0%, transparent 50%);
  --mesh-glow-2: radial-gradient(circle at 85% 15%, rgba(14, 165, 233, 0.15) 0%, transparent 55%);
  --mesh-glow-3: radial-gradient(circle at 50% 80%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 30px rgba(0, 0, 0, 0.65);
  --shadow-hover: 0 18px 40px rgba(0, 0, 0, 0.7);
}

/* Base Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: var(--font-family);
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  transition: background-color 0.3s ease, color 0.3s ease;
}

body {
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  color: var(--text-main);
  position: relative;
}

/* Mesh Radial Glow Background Container */
.mesh-bg-decor {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1200px;
  pointer-events: none;
  z-index: 0;
  background-image: var(--mesh-glow-1), var(--mesh-glow-2), var(--mesh-glow-3);
  background-repeat: no-repeat;
  transition: background-image 0.4s ease;
}

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

.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Sticky Navbar */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.3s ease, border-color 0.3s ease;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.brand-logo-img {
  height: 38px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
  display: block;
  transition: transform 0.2s ease;
}

.brand:hover .brand-logo-img {
  transform: scale(1.04);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

/* Nav links with animated amber underline */
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
  padding: 6px 2px;
  transition: color 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-amber);
  border-radius: var(--radius-full);
  transition: width 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav-link-tag {
  font-size: 0.68rem;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  background: var(--accent-sky-light);
  color: var(--accent-sky-hover);
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* Header Right Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Pill-shaped Language Indicator */
.lang-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 12px;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  user-select: none;
  letter-spacing: 0.04em;
}

.lang-pill .active-lang {
  color: var(--text-main);
}

/* Professional Sun/Moon Toggle */
.theme-toggle-btn {
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--border-subtle);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: var(--transition);
}

.theme-toggle-btn:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
  background: var(--accent-amber-light);
  transform: translateY(-1px);
}

.theme-icon-sun {
  display: block;
}

.theme-icon-moon {
  display: none;
}

[data-theme="dark"] .theme-icon-sun {
  display: none;
}

[data-theme="dark"] .theme-icon-moon {
  display: block;
}

/* Button UI Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

.btn-amber {
  background: var(--brand-gradient);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.32);
}

.btn-amber:hover {
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.48);
  transform: translateY(-2px);
}

.btn-sky {
  background: var(--accent-sky-light);
  color: var(--accent-sky-hover);
  border: 1px solid rgba(14, 165, 233, 0.3);
}

.btn-sky:hover {
  background: #0ea5e9;
  color: #ffffff;
  border-color: #0ea5e9;
  box-shadow: 0 6px 18px rgba(14, 165, 233, 0.35);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-outline:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background: var(--accent-amber-light);
}

.btn-lg {
  padding: 14px 30px;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: 70px 0 40px;
  text-align: center;
  position: relative;
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
}

/* Pill badge with waveform icon */
.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  background: var(--accent-amber-light);
  color: var(--accent-amber-hover);
  border: 1px solid rgba(245, 158, 11, 0.3);
  margin-bottom: 24px;
}

.hero-pill-badge svg {
  color: var(--accent-amber);
}

.hero-title {
  font-size: clamp(1.75rem, 3.5vw, 2.85rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 20px;
  white-space: nowrap;
}

.hero-title .brand-highlight {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 auto 36px;
  max-width: 780px;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

/* 3-Column Animated Metric Row */
.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.metric-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -10px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-subtle);
}

.metric-val {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.metric-val-amber {
  color: var(--accent-amber);
}

.metric-val-sky {
  color: var(--accent-sky);
}

.metric-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Interactive Node Ping Strip */
.ping-strip {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 10px;
}

.ping-strip-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
}

.ping-strip-head svg {
  color: var(--accent-sky);
}

.ping-region-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.ping-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.84rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.ping-tab:hover {
  border-color: var(--accent-sky);
  color: var(--text-main);
}

.ping-tab.active {
  background: var(--accent-sky-light);
  border-color: var(--accent-sky);
  color: var(--accent-sky-hover);
}

.ping-result-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-surface);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  font-size: 0.84rem;
}

.ping-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.2); }
}

.ping-ms {
  font-weight: 800;
  color: #10b981;
}

/* Sections Common */
.section {
  padding: 85px 0;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-amber);
  margin-bottom: 10px;
  letter-spacing: 0.08em;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-main);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* Bento Feature Grid (Crisp 1px borders, subtle hover elevation) */
.bento-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.bento-card:hover {
  transform: translateY(-5px);
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: var(--shadow-hover);
}

.bento-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}

.bento-icon-amber {
  background: var(--accent-amber-light);
  color: var(--accent-amber);
}

.bento-icon-sky {
  background: var(--accent-sky-light);
  color: var(--accent-sky);
}

.bento-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.bento-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex-grow: 1;
}

.bento-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.bento-tag {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

/* Dual Showcase Cards (Streaming & AI) */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.showcase-card:hover {
  transform: translateY(-4px);
  border-color: rgba(14, 165, 233, 0.4);
  box-shadow: var(--shadow-lg);
}

.showcase-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.showcase-header-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.showcase-header-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
}

.showcase-lead {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 24px;
}

.app-badge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 26px;
}

.app-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition);
}

.app-pill:hover {
  border-color: var(--accent-sky);
  transform: translateY(-2px);
}

.app-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  flex-shrink: 0;
}

.showcase-checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 22px;
  margin-top: auto;
}

.showcase-checklist li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.showcase-checklist svg {
  color: #10b981;
  flex-shrink: 0;
}

/* Pricing Section (Real Authentic Market Rates) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border-color: var(--accent-amber);
  box-shadow: 0 0 30px rgba(245, 158, 11, 0.18), var(--shadow-lg);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-gradient);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.pricing-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.pricing-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 22px;
  min-height: 42px;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-amber);
}

.price-amount {
  font-size: 3.1rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-main);
}

.price-decimal {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
}

.price-period {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-left: 2px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.pricing-features li svg {
  color: #10b981;
  flex-shrink: 0;
}

/* Reviews / Testimonials */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: var(--shadow-md);
}

.review-rating-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  color: #f59e0b;
  margin-bottom: 14px;
}

.review-content {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 22px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--accent-amber-light);
  color: var(--accent-amber-hover);
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.author-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.author-role {
  font-size: 0.8rem;
  color: var(--text-subtle);
}

/* FAQ Accordion */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item:hover {
  border-color: var(--accent-amber);
}

.faq-question {
  width: 100%;
  padding: 22px 26px;
  background: transparent;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: inherit;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  background: var(--bg-surface);
}

.faq-item.active .faq-answer {
  max-height: 1000px;
  transition: max-height 0.35s ease-in;
}

.faq-answer-inner {
  padding: 0 26px 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* Call to Action Banner */
.cta-banner {
  margin: 70px 0 0;
  padding: 60px 40px;
  background: var(--brand-gradient);
  border-radius: var(--radius-lg);
  color: #ffffff;
  text-align: center;
  box-shadow: 0 15px 35px rgba(245, 158, 11, 0.28);
}

.cta-banner h2 {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-banner p {
  font-size: 1.1rem;
  opacity: 0.94;
  margin-bottom: 30px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.btn-white {
  background: #ffffff;
  color: #ea580c;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.btn-white:hover {
  background: #fffdf9;
  transform: translateY(-2px);
}

/* Footer (Strictly Only the 4 Titles) */
.footer {
  margin-top: auto;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 42px 0 32px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--accent-amber);
}

.footer-copy {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-subtle);
}

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

.footer-copy a:hover {
  color: var(--accent-amber);
}

/* Standalone Content Pages (About, Terms, Privacy, Sitemap, Insights) */
.page-header {
  padding: 60px 0 40px;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.page-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.page-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto;
}

.content-body {
  padding: 50px 0 80px;
  max-width: 880px;
  margin: 0 auto;
}

.prose-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
}

.prose-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.prose-section p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}

.prose-section ul {
  padding-left: 20px;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
}

.prose-section li {
  margin-bottom: 8px;
}

.prose-badge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.prose-badge-item {
  padding: 16px;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
}

.prose-badge-item h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text-main);
}

.prose-badge-item p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.sitemap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}

.sitemap-card h3 {
  font-size: 1.25rem;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.sitemap-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.sitemap-links a:hover {
  color: var(--accent-amber);
  transform: translateX(4px);
}

/* Articles / Insights Grid */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.insight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.insight-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-sky);
  box-shadow: var(--shadow-md);
}

.insight-category {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-sky-hover);
  background: var(--accent-sky-light);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.insight-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.45;
}

.insight-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.insight-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
  font-size: 0.82rem;
  color: var(--text-subtle);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .bento-features-grid,
  .pricing-grid,
  .reviews-grid,
  .insights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  
  .nav-links {
    display: none;
  }
  
  .lang-pill {
    display: none;
  }
  
  .hero {
    padding: 45px 0 35px;
  }
  
  .hero-title {
    font-size: clamp(1.4rem, 5.6vw, 1.85rem);
    white-space: normal;
    text-wrap: balance;
    line-height: 1.35;
  }
  
  .hero-title-main,
  .hero-title-sub {
    display: inline-block;
    white-space: nowrap;
  }
  
  .hero-desc {
    font-size: 1rem;
    margin-bottom: 28px;
  }
  
  .hero-cta {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta .btn {
    width: 100%;
  }
  
  .metric-row {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 20px;
  }
  
  .metric-item:not(:last-child)::after {
    display: none;
  }
  
  .ping-strip {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .ping-result-box {
    width: 100%;
    justify-content: space-between;
  }
  
  .section {
    padding: 50px 0;
  }
  
  .section-title {
    font-size: 1.8rem;
  }
  
  /* Mobile single column */
  .bento-features-grid,
  .showcase-grid,
  .pricing-grid,
  .reviews-grid,
  .sitemap-grid,
  .prose-badge-grid,
  .insights-grid {
    grid-template-columns: 1fr;
  }
  
  .app-badge-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .cta-banner {
    padding: 40px 20px;
    margin-top: 50px;
  }
  
  .cta-banner h2 {
    font-size: 1.8rem;
  }
  
  .footer-nav {
    flex-direction: column;
    gap: 18px;
  }
  
  .prose-section {
    padding: 24px 20px;
  }
}

/* ===================================================
   Long-form SEO Article Page Typography & Layout
   =================================================== */
.article-page {
  padding: 40px 0 80px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-subtle);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
  opacity: 0.5;
}

.article-header {
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 28px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-subtle);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.article-tag-badge {
  background: var(--accent-amber-light);
  color: var(--accent-amber-hover);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.8rem;
}

.article-main-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.article-lead {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.8;
  background: var(--bg-card);
  border-left: 4px solid var(--accent-amber);
  padding: 16px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

/* Article Table of Contents (TOC) Box */
.article-toc-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0 40px;
  box-shadow: var(--shadow-sm);
}

.article-toc-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: toc-counter;
}

.article-toc-list li {
  counter-increment: toc-counter;
  font-size: 0.95rem;
}

.article-toc-list a {
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-toc-list a::before {
  content: counter(toc-counter) ".";
  font-weight: 700;
  color: var(--accent-amber);
}

.article-toc-list a:hover {
  color: var(--accent-amber);
  padding-left: 4px;
}

/* Long-form Article Body Prose */
.article-prose {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.85;
}

.article-prose h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 48px 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-subtle);
  letter-spacing: -0.015em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-prose h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 30px 0 14px;
}

.article-prose p {
  margin-bottom: 18px;
}

.article-prose strong {
  color: var(--text-main);
}

.article-prose a {
  color: var(--accent-amber-hover);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}

.article-prose a:hover {
  color: var(--accent-amber);
}

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

.article-prose li {
  margin-bottom: 10px;
}

/* Responsive Table in Prose */
.article-table-wrap {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  background: var(--bg-card);
}

.article-table th {
  background: var(--bg-primary);
  color: var(--text-main);
  font-weight: 700;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

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

.article-table tr:hover td {
  background: var(--bg-primary);
}

/* In-article CTA Callout Box */
.article-cta-box {
  background: var(--brand-gradient-soft, #fef3c7);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  margin: 40px 0;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: #92400e;
  margin-bottom: 10px;
}

.article-cta-box p {
  color: #78350f;
  font-size: 0.98rem;
  margin-bottom: 20px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

/* Related Articles Box */
.related-articles-box {
  margin-top: 55px;
  padding-top: 36px;
  border-top: 1px solid var(--border-subtle);
}

.related-articles-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.related-article-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-amber);
  box-shadow: var(--shadow-md);
}

.related-article-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.45;
}

.related-article-card p {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .related-articles-grid {
    grid-template-columns: 1fr;
  }
}