/* XipCloud Native Stylesheet - Zero JS / Zero Frameworks */
:root {
  --bg-base: #04102b;
  --bg-surface: rgba(7, 20, 48, 0.76);
  --bg-surface-strong: rgba(8, 22, 54, 0.9);
  --bg-card-hover: rgba(13, 33, 76, 0.86);
  --border-subtle: rgba(147, 197, 253, 0.22);
  --border-accent: rgba(56, 189, 248, 0.55);
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent-cyan: #22d3ee;
  --accent-blue: #3b82f6;
  --accent-violet: #8b5cf6;
  --accent-emerald: #10b981;
  --grad-brand: linear-gradient(135deg, #22d3ee 0%, #3b82f6 52%, #8b5cf6 100%);
  --shadow-glow: 0 18px 50px -15px rgba(34, 211, 238, 0.28);
  --shadow-card: 0 20px 45px -20px rgba(2, 6, 23, 0.85);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --container-max: 1180px;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.72;
  overflow-x: hidden;
  position: relative;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
}

a:hover {
  color: #67e8f9;
}

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

/* ==================== Dynamic Pure-CSS Multi-Tone Blue Starry Sky, Moon, Meteors & Clouds ==================== */
.bg-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 15% 22%, rgba(125, 211, 252, 0.22), transparent 62%),
    radial-gradient(ellipse 85% 55% at 82% 28%, rgba(56, 189, 248, 0.24), transparent 66%),
    radial-gradient(ellipse 95% 45% at 50% 68%, rgba(59, 130, 246, 0.34), transparent 70%),
    linear-gradient(180deg, #020b22 0%, #071d49 26%, #0f3878 52%, #1d5ca8 76%, #3f8ad0 92%, #6cb5eb 100%);
}

.sky-milkyway {
  position: absolute;
  inset: -22%;
  background:
    radial-gradient(ellipse 72% 28% at 45% 32%, rgba(59, 130, 246, 0.32), transparent 72%),
    radial-gradient(ellipse 58% 22% at 62% 46%, rgba(125, 211, 252, 0.24), transparent 70%),
    radial-gradient(ellipse 64% 30% at 30% 62%, rgba(29, 78, 216, 0.28), transparent 72%);
  transform: rotate(-14deg);
  filter: blur(34px);
  animation: milkyPulse 16s ease-in-out infinite alternate;
}

.sky-milkyway::before,
.sky-milkyway::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.sky-milkyway::before {
  background:
    radial-gradient(ellipse 55% 24% at 28% 38%, rgba(56, 189, 248, 0.26), transparent 68%),
    radial-gradient(ellipse 50% 28% at 74% 58%, rgba(37, 99, 235, 0.3), transparent 70%);
  filter: blur(42px);
  animation: blueWaveDriftA 22s ease-in-out infinite alternate;
}

.sky-milkyway::after {
  background:
    radial-gradient(ellipse 60% 22% at 54% 72%, rgba(147, 197, 253, 0.28), transparent 68%),
    radial-gradient(ellipse 46% 24% at 22% 22%, rgba(14, 165, 233, 0.22), transparent 70%);
  filter: blur(38px);
  animation: blueWaveDriftB 19s ease-in-out infinite alternate;
}

.star-layer {
  position: absolute;
  inset: 0;
  background-repeat: repeat;
}

.star-layer-1 {
  background-image:
    radial-gradient(1.3px 1.3px at 24px 36px, rgba(255, 255, 255, 0.95), transparent),
    radial-gradient(1.1px 1.1px at 94px 112px, rgba(191, 219, 254, 0.88), transparent),
    radial-gradient(1.6px 1.6px at 168px 54px, rgba(224, 242, 254, 0.95), transparent),
    radial-gradient(1px 1px at 228px 164px, rgba(255, 255, 255, 0.78), transparent),
    radial-gradient(1.4px 1.4px at 58px 206px, rgba(186, 230, 253, 0.9), transparent),
    radial-gradient(1.2px 1.2px at 196px 248px, rgba(255, 255, 255, 0.85), transparent);
  background-size: 260px 280px;
  animation: starTwinkleA 6s ease-in-out infinite alternate;
}

.star-layer-2 {
  background-image:
    radial-gradient(1.8px 1.8px at 42px 88px, rgba(255, 255, 255, 0.95), transparent),
    radial-gradient(1.2px 1.2px at 142px 26px, rgba(147, 197, 253, 0.85), transparent),
    radial-gradient(2px 2px at 264px 134px, rgba(224, 242, 254, 0.92), transparent),
    radial-gradient(1.3px 1.3px at 318px 218px, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(1.5px 1.5px at 104px 284px, rgba(186, 230, 253, 0.88), transparent);
  background-size: 360px 330px;
  animation: starTwinkleB 9s ease-in-out infinite alternate;
}

.star-layer-3 {
  background-image:
    radial-gradient(2.2px 2.2px at 78px 64px, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(2.4px 2.4px at 290px 190px, rgba(165, 243, 252, 0.95), transparent),
    radial-gradient(1.9px 1.9px at 410px 92px, rgba(255, 255, 255, 0.88), transparent),
    radial-gradient(2.1px 2.1px at 185px 340px, rgba(191, 219, 254, 0.9), transparent);
  background-size: 480px 420px;
  animation: starTwinkleC 11s ease-in-out infinite alternate;
}

/* Faintly Visible Ethereal Moon on the Left */
.sky-moon {
  position: absolute;
  top: 12%;
  left: 6%;
  width: 116px;
  height: 116px;
  animation: moonEthereal 13s ease-in-out infinite alternate;
}

.moon-halo {
  position: absolute;
  inset: -64px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 242, 254, 0.34) 0%, rgba(96, 165, 250, 0.16) 44%, transparent 72%);
  filter: blur(12px);
}

.moon-disc {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 34%, rgba(148, 163, 184, 0.22) 0 11%, transparent 13%),
    radial-gradient(circle at 64% 48%, rgba(148, 163, 184, 0.16) 0 14%, transparent 16%),
    radial-gradient(circle at 46% 68%, rgba(148, 163, 184, 0.14) 0 9%, transparent 11%),
    radial-gradient(circle at 35% 30%, #ffffff 0%, #e0f2fe 45%, #bae6fd 78%, rgba(147, 197, 253, 0.65) 100%);
  box-shadow:
    0 0 32px rgba(224, 242, 254, 0.55),
    0 0 78px rgba(96, 165, 250, 0.36);
  opacity: 0.72;
  filter: blur(0.4px);
}

.moon-veil {
  position: absolute;
  top: 22%;
  left: -38%;
  width: 185%;
  height: 58%;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent 0%, rgba(15, 39, 88, 0.58) 38%, rgba(191, 219, 254, 0.22) 62%, transparent 100%);
  filter: blur(10px);
  animation: moonVeilDrift 15s ease-in-out infinite alternate;
}

/* Shooting Stars / Meteors */
.meteor {
  position: absolute;
  width: 190px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(186, 230, 253, 0.58) 38%, transparent 100%);
  box-shadow: 0 0 10px rgba(186, 230, 253, 0.75);
  opacity: 0;
  transform: rotate(-32deg);
  will-change: transform, opacity;
}

.meteor::before {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffffff;
  box-shadow: 0 0 12px 3px rgba(224, 242, 254, 0.95);
}

.meteor-1 {
  top: 8%;
  left: 52%;
  animation: meteorStreak 8.5s ease-in infinite;
  animation-delay: 0.8s;
}

.meteor-2 {
  top: 19%;
  left: 78%;
  width: 155px;
  animation: meteorStreak 11s ease-in infinite;
  animation-delay: 4.2s;
}

.meteor-3 {
  top: 5%;
  left: 88%;
  width: 215px;
  animation: meteorStreak 13.5s ease-in infinite;
  animation-delay: 7.5s;
}

.meteor-4 {
  top: 26%;
  left: 36%;
  width: 145px;
  animation: meteorStreak 15s ease-in infinite;
  animation-delay: 10.6s;
}

/* Bottom Drifting White Clouds */
.clouds-wrap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 260px;
  overflow: hidden;
  mask-image: linear-gradient(to top, #000 58%, transparent 100%);
  -webkit-mask-image: linear-gradient(to top, #000 58%, transparent 100%);
}

.cloud-bank {
  position: absolute;
  left: 0;
  width: 200%;
  background-repeat: repeat-x;
  will-change: transform;
}

.cloud-bank-back {
  bottom: 40px;
  height: 200px;
  opacity: 0.34;
  filter: blur(7px);
  background-size: 50% 100%;
  background-image:
    radial-gradient(15% 68% at 8% 88%, rgba(224, 242, 254, 0.95) 0%, rgba(191, 219, 254, 0.45) 58%, transparent 74%),
    radial-gradient(19% 78% at 24% 85%, rgba(255, 255, 255, 0.92) 0%, rgba(186, 230, 253, 0.4) 60%, transparent 76%),
    radial-gradient(16% 64% at 41% 90%, rgba(224, 242, 254, 0.9) 0%, rgba(147, 197, 253, 0.38) 58%, transparent 74%),
    radial-gradient(20% 80% at 59% 84%, rgba(255, 255, 255, 0.94) 0%, rgba(191, 219, 254, 0.42) 60%, transparent 76%),
    radial-gradient(16% 70% at 77% 88%, rgba(224, 242, 254, 0.9) 0%, rgba(186, 230, 253, 0.4) 58%, transparent 74%),
    radial-gradient(17% 72% at 93% 86%, rgba(255, 255, 255, 0.92) 0%, rgba(191, 219, 254, 0.4) 58%, transparent 75%);
  animation: cloudDrift 72s linear infinite;
}

.cloud-bank-mid {
  bottom: 6px;
  height: 175px;
  opacity: 0.42;
  filter: blur(4px);
  background-size: 50% 100%;
  background-image:
    radial-gradient(18% 76% at 12% 92%, rgba(255, 255, 255, 0.96) 0%, rgba(219, 234, 254, 0.48) 58%, transparent 76%),
    radial-gradient(16% 68% at 31% 94%, rgba(240, 249, 255, 0.95) 0%, rgba(191, 219, 254, 0.45) 58%, transparent 75%),
    radial-gradient(21% 82% at 50% 90%, rgba(255, 255, 255, 0.96) 0%, rgba(224, 242, 254, 0.5) 60%, transparent 76%),
    radial-gradient(17% 72% at 70% 92%, rgba(240, 249, 255, 0.94) 0%, rgba(191, 219, 254, 0.44) 58%, transparent 75%),
    radial-gradient(19% 76% at 88% 90%, rgba(255, 255, 255, 0.95) 0%, rgba(219, 234, 254, 0.46) 58%, transparent 76%);
  animation: cloudDrift 48s linear infinite;
}

.cloud-bank-front {
  bottom: -24px;
  height: 145px;
  opacity: 0.54;
  filter: blur(6px);
  background-size: 50% 100%;
  background-image:
    radial-gradient(20% 78% at 6% 94%, #ffffff 0%, rgba(224, 242, 254, 0.62) 55%, transparent 76%),
    radial-gradient(22% 84% at 26% 96%, #ffffff 0%, rgba(219, 234, 254, 0.6) 56%, transparent 76%),
    radial-gradient(19% 76% at 46% 94%, #f8fafc 0%, rgba(224, 242, 254, 0.58) 55%, transparent 75%),
    radial-gradient(23% 85% at 67% 96%, #ffffff 0%, rgba(219, 234, 254, 0.6) 56%, transparent 76%),
    radial-gradient(20% 78% at 87% 94%, #ffffff 0%, rgba(224, 242, 254, 0.62) 55%, transparent 76%);
  animation: cloudDrift 34s linear infinite;
}

.cloud-mist {
  position: absolute;
  inset: auto 0 0 0;
  height: 125px;
  background: linear-gradient(to top, rgba(224, 242, 254, 0.34) 0%, rgba(125, 211, 252, 0.18) 52%, transparent 100%);
}

@keyframes milkyPulse {
  0% { opacity: 0.78; transform: rotate(-14deg) scale(1); }
  100% { opacity: 1; transform: rotate(-11deg) scale(1.07); }
}

@keyframes blueWaveDriftA {
  0% { transform: translate3d(-4%, -2%, 0) scale(0.96); opacity: 0.75; }
  100% { transform: translate3d(5%, 4%, 0) scale(1.06); opacity: 1; }
}

@keyframes blueWaveDriftB {
  0% { transform: translate3d(4%, 3%, 0) scale(1.04); opacity: 0.7; }
  100% { transform: translate3d(-5%, -3%, 0) scale(0.95); opacity: 1; }
}

@keyframes starTwinkleA {
  0% { opacity: 0.52; }
  50% { opacity: 0.96; }
  100% { opacity: 0.68; }
}

@keyframes starTwinkleB {
  0% { opacity: 0.85; }
  50% { opacity: 0.42; }
  100% { opacity: 0.95; }
}

@keyframes starTwinkleC {
  0% { opacity: 0.45; transform: translate3d(0, 0, 0); }
  100% { opacity: 0.95; transform: translate3d(-12px, 6px, 0); }
}

@keyframes moonEthereal {
  0% { opacity: 0.36; transform: translate3d(0, 0, 0) scale(0.98); }
  50% { opacity: 0.78; transform: translate3d(4px, -4px, 0) scale(1.01); }
  100% { opacity: 0.44; transform: translate3d(0, 2px, 0) scale(0.99); }
}

@keyframes moonVeilDrift {
  0% { transform: translate3d(-14%, 0, 0); opacity: 0.85; }
  100% { transform: translate3d(16%, -6px, 0); opacity: 0.35; }
}

@keyframes meteorStreak {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) rotate(-32deg) scaleX(0.6);
  }
  4% {
    opacity: 1;
  }
  18% {
    opacity: 0.85;
  }
  26%, 100% {
    opacity: 0;
    transform: translate3d(-520px, 325px, 0) rotate(-32deg) scaleX(1.1);
  }
}

@keyframes cloudDrift {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-50%, 0, 0); }
}

@media (max-width: 640px) {
  .sky-moon {
    top: 9%;
    left: 4%;
    width: 76px;
    height: 76px;
  }
  .clouds-wrap {
    height: 190px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sky-milkyway, .sky-milkyway::before, .sky-milkyway::after, .star-layer, .sky-moon, .moon-veil, .meteor, .cloud-bank {
    animation: none;
  }
}

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

.section {
  padding: 72px 0;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 44px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid rgba(34, 211, 238, 0.28);
  color: #67e8f9;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 18px rgba(2, 11, 34, 0.55);
}

.section-desc {
  margin: 0;
  color: #e2e8f0;
  font-size: 1.02rem;
  text-shadow: 0 1px 12px rgba(2, 11, 34, 0.55);
}

/* ==================== Header & Top-Left Logo ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(4, 12, 32, 0.72);
  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: 12px;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand-logo:hover {
  color: var(--text-primary);
  opacity: 0.94;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid rgba(148, 163, 184, 0.28);
  flex-shrink: 0;
  filter: drop-shadow(0 0 12px rgba(34, 211, 238, 0.25));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 1.22rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, #ffffff 0%, #a5f3fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text-secondary);
  font-size: 0.94rem;
  font-weight: 500;
}

.site-nav a:hover {
  color: var(--accent-cyan);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* ==================== Buttons & CTA ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.96rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-brand);
  color: #ffffff;
  box-shadow: 0 10px 28px -10px rgba(59, 130, 246, 0.7);
}

.btn-primary:hover {
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 16px 34px -10px rgba(34, 211, 238, 0.75);
}

.btn-secondary {
  background: rgba(15, 23, 42, 0.8);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  color: var(--accent-cyan);
  border-color: var(--border-accent);
  background: rgba(22, 33, 60, 0.9);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.88rem;
  border-radius: 10px;
}

.btn-block {
  width: 100%;
}

/* ==================== Hero Section ==================== */
.hero {
  padding: 84px 0 60px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.78);
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: #a5f3fc;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.65); }
  70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero h1 {
  margin: 0 auto 20px;
  max-width: 900px;
  font-size: clamp(2.1rem, 4.6vw, 3.45rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.text-gradient {
  background: linear-gradient(120deg, #67e8f9 0%, #60a5fa 48%, #c084fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 auto 32px;
  max-width: 760px;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  backdrop-filter: blur(12px);
}

.stat-value {
  font-size: 1.55rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==================== GEO Direct Answer Callout ==================== */
.geo-summary {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(17, 29, 58, 0.78));
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 28px;
  align-items: center;
}

.geo-summary h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
  color: #ffffff;
}

.geo-summary p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.96rem;
}

.geo-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.geo-facts li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 14px;
  background: rgba(6, 9, 19, 0.55);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  font-size: 0.9rem;
}

.geo-facts strong {
  color: var(--accent-cyan);
}

/* ==================== Pricing Grid (All 3 Plans in ONE Row) ==================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(22, 37, 74, 0.92) 0%, rgba(13, 20, 38, 0.9) 100%);
  border: 1.5px solid rgba(34, 211, 238, 0.65);
  box-shadow: 0 22px 55px -18px rgba(34, 211, 238, 0.35);
}

.plan-badge {
  position: absolute;
  top: -13px;
  right: 24px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--grad-brand);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  box-shadow: 0 8px 20px -6px rgba(34, 211, 238, 0.7);
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0 0 6px;
  color: #ffffff;
}

.plan-tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0 0 20px;
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}

.plan-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.plan-amount {
  font-size: 2.55rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: #ffffff;
}

.plan-cycle {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-usd {
  font-size: 0.84rem;
  color: var(--accent-emerald);
  margin-bottom: 22px;
  font-weight: 600;
}

.plan-features {
  list-style: none;
  margin: 0 0 28px;
  padding: 20px 0 0;
  border-top: 1px solid var(--border-subtle);
  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: "✓";
  color: var(--accent-cyan);
  font-weight: 900;
  flex-shrink: 0;
}

/* ==================== Features & Node Matrix ==================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  backdrop-filter: blur(12px);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.25);
  color: var(--accent-cyan);
  font-size: 1.25rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  color: #ffffff;
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* ==================== Comparison Table (GEO Friendly) ==================== */
.table-wrap {
  margin-top: 40px;
  overflow-x: auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 640px;
}

.spec-table th,
.spec-table td {
  padding: 15px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.93rem;
}

.spec-table thead th {
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  font-weight: 700;
}

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

.spec-table tbody td:first-child {
  font-weight: 600;
  color: #ffffff;
}

/* ==================== Articles Section ==================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  backdrop-filter: blur(12px);
  transition: transform 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(59, 130, 246, 0.16);
  color: #93c5fd;
  border: 1px solid rgba(59, 130, 246, 0.28);
}

.article-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.45;
  color: #ffffff;
}

.article-card h3 a {
  color: #ffffff;
}

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

.article-card p {
  margin: 0 0 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex-grow: 1;
}

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

/* ==================== Reviews Section ==================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.review-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.review-stars {
  color: #fbbf24;
  letter-spacing: 2px;
  font-size: 0.95rem;
}

.review-quote {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.93rem;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.author-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--grad-brand);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 0.9rem;
  color: #ffffff;
  flex-shrink: 0;
}

.author-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: #ffffff;
}

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

/* ==================== FAQ Native Accordion (<details>) ==================== */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

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

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

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.02rem;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.35rem;
  color: var(--accent-cyan);
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  padding-top: 14px;
}

/* ==================== External Links & Footer ==================== */
.ext-links-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.ext-link-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 18px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.ext-link-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.ext-link-card strong {
  color: #ffffff;
  font-size: 0.96rem;
}

.ext-link-card span {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.16), rgba(59, 130, 246, 0.18), rgba(139, 92, 246, 0.16));
  border: 1px solid rgba(34, 211, 238, 0.35);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  margin-top: 24px;
}

.cta-banner h2 {
  margin: 0 0 12px;
  font-size: clamp(1.55rem, 2.8vw, 2.1rem);
}

.cta-banner p {
  margin: 0 auto 26px;
  max-width: 640px;
  color: var(--text-secondary);
}

.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: rgba(6, 16, 40, 0.62);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  padding: 44px 0 32px;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 32px;
}

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 0.96rem;
  color: #ffffff;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

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

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

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.83rem;
  color: var(--text-muted);
}

/* ==================== Article Detail Page ==================== */
.article-shell {
  padding: 44px 0 72px;
}

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

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 30px;
  align-items: start;
}

.article-body {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 38px;
  backdrop-filter: blur(14px);
}

.article-body h1 {
  margin: 0 0 14px;
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  line-height: 1.28;
}

.article-info {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.86rem;
  color: var(--text-muted);
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body h2 {
  margin: 30px 0 12px;
  font-size: 1.35rem;
  color: #ffffff;
  border-left: 3px solid var(--accent-cyan);
  padding-left: 12px;
}

.article-body h3 {
  margin: 22px 0 8px;
  font-size: 1.1rem;
  color: #e2e8f0;
}

.article-body p {
  margin: 0 0 16px;
  color: var(--text-secondary);
  font-size: 1rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: var(--text-secondary);
}

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

.article-callout {
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.28);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  margin: 22px 0;
}

.article-callout strong {
  color: var(--accent-cyan);
}

.article-sidebar {
  display: grid;
  gap: 20px;
  position: sticky;
  top: 96px;
}

.sidebar-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px;
  backdrop-filter: blur(12px);
}

.sidebar-box h3 {
  margin: 0 0 12px;
  font-size: 1.04rem;
  color: #ffffff;
}

.sidebar-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.sidebar-links a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(6, 9, 19, 0.48);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.4;
}

.sidebar-links a:hover {
  border-color: var(--border-accent);
  color: var(--accent-cyan);
}

.article-nav-bottom {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.article-nav-card {
  display: block;
  padding: 16px;
  border-radius: 12px;
  background: rgba(6, 9, 19, 0.55);
  border: 1px solid var(--border-subtle);
}

.article-nav-card:hover {
  border-color: var(--border-accent);
}

.article-nav-card span {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.article-nav-card strong {
  color: #ffffff;
  font-size: 0.94rem;
}

/* ==================== Responsive Breakpoints ==================== */
@media (max-width: 1024px) {
  .geo-summary,
  .article-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .features-grid,
  .articles-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ext-links-grid,
  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-sidebar {
    position: static;
  }
}

@media (max-width: 900px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .site-nav {
    display: none;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 52px 0;
  }

  .features-grid,
  .articles-grid,
  .reviews-grid,
  .ext-links-grid,
  .hero-stats,
  .article-nav-bottom {
    grid-template-columns: 1fr;
  }

  .article-body {
    padding: 24px 18px;
  }

  .header-actions .btn-secondary {
    display: none;
  }
}