/* ==========================================================================
   Tanz Cloud 飞毯加速 (tanzcloud.homes) - Pure Native CSS Design System
   Zero external frameworks, zero JS runtime, GPU-accelerated dynamic backdrop
   ========================================================================== */

:root {
  --bg-deep: #050811;
  --bg-surface: rgba(12, 19, 36, 0.72);
  --bg-surface-strong: rgba(15, 24, 45, 0.88);
  --bg-elevated: rgba(20, 32, 58, 0.78);
  --border-subtle: rgba(148, 163, 184, 0.16);
  --border-glow: rgba(34, 211, 238, 0.38);
  --border-gold: rgba(251, 191, 36, 0.42);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --cyan: #22d3ee;
  --cyan-strong: #06b6d4;
  --mint: #34d399;
  --gold: #fbbf24;
  --gold-deep: #f59e0b;

  --grad-brand: linear-gradient(135deg, #22d3ee 0%, #34d399 55%, #fbbf24 100%);
  --grad-cta: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  --grad-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --shadow-card: 0 18px 42px -18px rgba(0, 0, 0, 0.75);
  --shadow-glow: 0 10px 32px -8px rgba(34, 211, 238, 0.32);

  --container-max: 1220px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-deep);
  line-height: 1.7;
  overflow-x: clip;
  position: relative;
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible,
label:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ==========================================================================
   Dynamic Animated Background (100% Pure CSS)
   ========================================================================== */

.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 0%, rgba(14, 116, 144, 0.18) 0%, transparent 55%),
    linear-gradient(180deg, #050811 0%, #070d1b 52%, #050811 100%);
}

.bg-world-map {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: contain;
  object-position: center 44%;
  opacity: 0.88;
  will-change: transform;
  animation: mapDrift 28s ease-in-out infinite alternate;
}

@keyframes mapDrift {
  0% { transform: scale(1) translate3d(0, 0, 0); }
  100% { transform: scale(1.03) translate3d(-1%, 0.6%, 0); }
}

.bg-grid {
  position: absolute;
  inset: -10%;
  background-image:
    linear-gradient(to right, rgba(56, 189, 248, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(56, 189, 248, 0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 75% 65% at 50% 30%, #000 35%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 30%, #000 35%, transparent 100%);
  animation: gridFloat 26s linear infinite;
}

.bg-stars {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 14% 22%, rgba(255, 255, 255, 0.72) 50%, transparent 55%),
    radial-gradient(1.5px 1.5px at 36% 68%, rgba(103, 232, 249, 0.75) 50%, transparent 55%),
    radial-gradient(2px 2px at 62% 18%, rgba(251, 191, 36, 0.65) 50%, transparent 55%),
    radial-gradient(1.5px 1.5px at 84% 44%, rgba(52, 211, 153, 0.7) 50%, transparent 55%),
    radial-gradient(1.2px 1.2px at 24% 84%, rgba(255, 255, 255, 0.55) 50%, transparent 55%),
    radial-gradient(1.8px 1.8px at 74% 78%, rgba(103, 232, 249, 0.65) 50%, transparent 55%),
    radial-gradient(1.2px 1.2px at 91% 14%, rgba(255, 255, 255, 0.6) 50%, transparent 55%),
    radial-gradient(1.4px 1.4px at 49% 41%, rgba(251, 191, 36, 0.55) 50%, transparent 55%);
  background-size: 420px 420px;
  animation: starPulse 12s ease-in-out infinite alternate;
}

.aurora-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(85px);
  opacity: 0.42;
  will-change: transform;
}

.aurora-orb.orb-1 {
  width: 540px;
  height: 540px;
  top: -140px;
  left: -80px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.68), rgba(14, 165, 233, 0.14) 65%, transparent 72%);
  animation: driftOne 18s ease-in-out infinite alternate;
}

.aurora-orb.orb-2 {
  width: 480px;
  height: 480px;
  top: 22%;
  right: -120px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.52), rgba(16, 185, 129, 0.12) 65%, transparent 72%);
  animation: driftTwo 22s ease-in-out infinite alternate;
}

.aurora-orb.orb-3 {
  width: 440px;
  height: 440px;
  bottom: -110px;
  left: 32%;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.34), rgba(245, 158, 11, 0.08) 65%, transparent 72%);
  animation: driftThree 20s ease-in-out infinite alternate;
}

.carpet-stream {
  position: absolute;
  width: 150%;
  height: 2px;
  left: -25%;
  background: linear-gradient(90deg, transparent 0%, rgba(34, 211, 238, 0.55) 35%, rgba(251, 191, 36, 0.65) 50%, rgba(52, 211, 153, 0.45) 65%, transparent 100%);
  transform: rotate(-14deg);
  opacity: 0.38;
  will-change: transform, opacity;
}

.carpet-stream.stream-1 {
  top: 24%;
  animation: streamGlide 11s linear infinite;
}

.carpet-stream.stream-2 {
  top: 62%;
  height: 1.5px;
  opacity: 0.25;
  animation: streamGlide 15s linear infinite reverse;
}

@keyframes driftOne {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(110px, 65px, 0) scale(1.12); }
  100% { transform: translate3d(40px, 140px, 0) scale(0.95); }
}

@keyframes driftTwo {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-120px, 80px, 0) scale(1.14); }
  100% { transform: translate3d(-50px, -60px, 0) scale(0.94); }
}

@keyframes driftThree {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-80px, -70px, 0) scale(1.15); }
  100% { transform: translate3d(90px, -30px, 0) scale(0.96); }
}

@keyframes gridFloat {
  0% { background-position: 0 0; }
  100% { background-position: 56px 56px; }
}

@keyframes starPulse {
  0% { opacity: 0.45; transform: translate3d(0, 0, 0); }
  100% { opacity: 0.9; transform: translate3d(-16px, -12px, 0); }
}

@keyframes streamGlide {
  0% { transform: translate3d(-18%, 60px, 0) rotate(-14deg); opacity: 0; }
  15% { opacity: 0.42; }
  85% { opacity: 0.36; }
  100% { transform: translate3d(18%, -60px, 0) rotate(-14deg); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .bg-world-map,
  .bg-grid,
  .bg-stars,
  .aurora-orb,
  .carpet-stream,
  .pulse-dot {
    animation: none !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* ==========================================================================
   Layout & Containers
   ========================================================================== */

.container {
  width: min(100% - 32px, var(--container-max));
  margin-inline: auto;
}

.section {
  padding: 76px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 44px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.25);
  margin-bottom: 14px;
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.65rem, 3.2vw, 2.35rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.section-desc {
  margin: 0;
  color: var(--text-secondary);
  font-size: 1.02rem;
}

.gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.96rem;
  line-height: 1.2;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-cta);
  color: #03151d;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px -6px rgba(34, 211, 238, 0.5);
}

.btn-gold {
  background: var(--grad-gold);
  color: #1c1002;
  box-shadow: 0 10px 28px -8px rgba(251, 191, 36, 0.45);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 34px -6px rgba(251, 191, 36, 0.6);
}

.btn-ghost {
  background: rgba(15, 23, 42, 0.65);
  color: var(--text-primary);
  border-color: rgba(148, 163, 184, 0.28);
  backdrop-filter: blur(10px);
}

.btn-ghost:hover {
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.88rem;
}

/* ==========================================================================
   Top Sticky Header & Left-Top Logo
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(5, 8, 17, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 74px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1.5px solid rgba(34, 211, 238, 0.45);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.25);
}

.brand-wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.18;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-primary);
}

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

.brand-sub {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.nav-toggle {
  display: none;
}

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  cursor: pointer;
}

.nav-burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.18s ease;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--cyan);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding: 76px 0 60px;
}

.hero-grid {
  max-width: 900px;
  margin-inline: auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(15, 24, 45, 0.85);
  border: 1px solid rgba(52, 211, 153, 0.32);
  color: #a7f3d0;
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 18px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.22);
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.25); opacity: 0.7; }
}

.hero-title {
  margin: 0 0 18px;
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.hero-lead {
  margin: 0 auto 28px;
  font-size: 1.08rem;
  color: var(--text-secondary);
  max-width: 720px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-bottom: 34px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.metric-chip {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.metric-val {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--cyan);
}

.metric-lbl {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Pricing Section — ALL PLANS IN A SINGLE HORIZONTAL ROW + Pure-CSS Toggle
   ========================================================================== */

.pricing-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.bill-radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.billing-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-strong);
  border: 1px solid var(--border-subtle);
  margin-bottom: 32px;
}

.billing-switch label {
  padding: 9px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.save-badge {
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: rgba(251, 191, 36, 0.18);
  color: var(--gold);
}

#bill-month:checked ~ .billing-switch label[for="bill-month"],
#bill-year:checked ~ .billing-switch label[for="bill-year"] {
  background: var(--grad-cta);
  color: #03151d;
}

#bill-month:checked ~ .billing-switch label[for="bill-month"] .save-badge,
#bill-year:checked ~ .billing-switch label[for="bill-year"] .save-badge {
  background: rgba(3, 21, 29, 0.2);
  color: #03151d;
}

.price-annual {
  display: none;
}

#bill-year:checked ~ .pricing-grid .price-monthly {
  display: none;
}

#bill-year:checked ~ .pricing-grid .price-annual {
  display: block;
}

/* Force all pricing tiers into ONE single horizontal row on desktop & tablet */
.pricing-grid {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.plan-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.plan-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
}

.plan-card.featured {
  background: linear-gradient(180deg, rgba(16, 33, 60, 0.92) 0%, rgba(11, 20, 40, 0.9) 100%);
  border-color: var(--border-gold);
  box-shadow: 0 20px 50px -16px rgba(251, 191, 36, 0.22), var(--shadow-glow);
}

.plan-badge {
  position: absolute;
  top: -13px;
  right: 22px;
  padding: 4px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 800;
  background: var(--grad-gold);
  color: #1c1002;
}

.plan-head {
  margin-bottom: 18px;
}

.plan-name {
  margin: 0 0 6px;
  font-size: 1.32rem;
  font-weight: 800;
}

.plan-sub {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-price-box {
  padding: 16px 0;
  margin-bottom: 18px;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.price-amount {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

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

.plan-card.featured .currency {
  color: var(--gold);
}

.figure {
  font-size: 2.55rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
}

.period {
  font-size: 0.94rem;
  color: var(--text-muted);
  font-weight: 600;
}

.price-alt {
  margin-top: 6px;
  font-size: 0.84rem;
  color: var(--mint);
  font-weight: 600;
}

.plan-features {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 11px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--text-secondary);
}

.plan-features li::before {
  content: "✓";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  background: rgba(52, 211, 153, 0.16);
  color: var(--mint);
  margin-top: 2px;
}

.plan-card.featured .plan-features li::before {
  background: rgba(251, 191, 36, 0.18);
  color: var(--gold);
}

.pricing-note {
  margin-top: 24px;
  width: 100%;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  background: rgba(15, 24, 45, 0.68);
  border: 1px dashed rgba(34, 211, 238, 0.3);
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ==========================================================================
   Features & Global Nodes
   ========================================================================== */

.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.cards-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.node-card,
.link-card,
.article-card,
.review-card {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover,
.node-card:hover,
.link-card:hover,
.article-card:hover,
.review-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glow);
}

.icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.28);
  color: var(--cyan);
  margin-bottom: 14px;
}

.feature-card h3,
.node-card h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
  font-weight: 700;
}

.feature-card p,
.node-card p {
  margin: 0;
  font-size: 0.93rem;
  color: var(--text-secondary);
}

.node-region {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.node-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(52, 211, 153, 0.14);
  color: var(--mint);
  font-weight: 700;
}

/* ==========================================================================
   Outbound Authority Links (生态客户端与权威外链)
   ========================================================================== */

.link-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
}

.link-card-title {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  color: var(--text-primary);
}

.link-card-desc {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.link-card-url {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   Articles Showcase Section (8 Deep-Dive SEO Articles)
   ========================================================================== */

.articles-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.article-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}

.article-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.article-tag {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: rgba(34, 211, 238, 0.1);
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.2);
}

.article-card h3 {
  margin: 0;
  font-size: 1.04rem;
  line-height: 1.45;
  font-weight: 700;
}

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

.article-excerpt {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-secondary);
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

.read-more {
  color: var(--cyan);
  font-weight: 700;
}

.section-actions {
  margin-top: 32px;
  text-align: center;
}

/* ==========================================================================
   User Reviews Section
   ========================================================================== */

.review-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.reviewer-name {
  font-weight: 700;
  font-size: 1rem;
}

.reviewer-role {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.stars {
  color: var(--gold);
  letter-spacing: 2px;
  font-size: 0.92rem;
}

.review-text {
  margin: 0 0 14px;
  font-size: 0.93rem;
  color: var(--text-secondary);
}

.review-plan {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--mint);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(52, 211, 153, 0.1);
  display: inline-block;
}

/* ==========================================================================
   Pure HTML FAQ Accordion (<details> / <summary>)
   ========================================================================== */

.faq-list {
  max-width: 900px;
  margin-inline: auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--border-glow);
  background: var(--bg-surface-strong);
}

.faq-item summary {
  list-style: none;
  padding: 18px 22px;
  font-weight: 700;
  font-size: 1.02rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan);
  font-size: 1.15rem;
  font-weight: 700;
}

.faq-item[open] summary::after {
  content: "−";
  background: rgba(251, 191, 36, 0.16);
  color: var(--gold);
}

.faq-body {
  padding: 0 22px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 14px;
}

/* ==========================================================================
   CTA Banner & Footer
   ========================================================================== */

.cta-banner {
  padding: 44px 36px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(14, 34, 62, 0.92), rgba(10, 22, 42, 0.92));
  border: 1px solid var(--border-glow);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow-glow);
}

.cta-banner h2 {
  margin: 0 0 8px;
  font-size: clamp(1.45rem, 2.6vw, 2rem);
}

.cta-banner p {
  margin: 0;
  color: var(--text-secondary);
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: rgba(4, 7, 15, 0.92);
  padding: 52px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 36px;
}

.footer-brand p {
  margin: 14px 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 340px;
}

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color 0.18s ease;
}

.footer-col a:hover {
  color: var(--cyan);
}

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Responsive Breakpoints (Keeping Pricing Row Side-by-Side!)
   ========================================================================== */

@media (max-width: 1080px) {
  .articles-grid,
  .cards-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .pricing-grid {
    gap: 16px;
  }
  .plan-card {
    padding: 22px 18px;
  }
}

@media (max-width: 960px) {
  .cards-grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .nav-burger {
    display: inline-flex;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 18px 20px 22px;
    background: rgba(6, 10, 20, 0.97);
    border-bottom: 1px solid var(--border-subtle);
  }
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .header-actions {
    margin-top: 12px;
  }
  .nav-toggle:checked ~ .main-nav {
    display: flex;
  }
}

@media (max-width: 759px) {
  /* Keep all pricing cards in ONE horizontal swipeable row even on small phones */
  .pricing-grid {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: minmax(265px, 82vw);
    overflow-x: auto;
    padding-bottom: 12px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .plan-card {
    scroll-snap-align: start;
  }
  .cards-grid-3,
  .cards-grid-4,
  .articles-grid,
  .footer-grid,
  .hero-metrics {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 54px 0;
  }
  .cta-banner {
    padding: 28px 22px;
  }
}