/* ==========================================================================
   MESL Cloud - Cyber Obsidian & Electro-Purple Magic Blue Theme
   Visual Engine: Deep Space #0a0910, Purple #a855f7 -> Blue #3b82f6 Gradient
   High-Conversion Responsive Design Framework (2026 Edition)
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-dark: #0a0910;
  --bg-card: rgba(18, 16, 28, 0.72);
  --bg-card-hover: rgba(26, 23, 40, 0.85);
  --bg-glass-nav: rgba(10, 9, 16, 0.82);
  --bg-badge: rgba(168, 85, 247, 0.12);

  /* Primary Neon Gradients */
  --accent-purple: #a855f7;
  --accent-purple-light: #c084fc;
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --accent-cyan: #38bdf8;
  --accent-pink: #ec4899;
  --gradient-primary: linear-gradient(135deg, #a855f7 0%, #3b82f6 100%);
  --gradient-primary-hover: linear-gradient(135deg, #c084fc 0%, #60a5fa 100%);
  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
  --gradient-glow: linear-gradient(90deg, rgba(168, 85, 247, 0.4), rgba(59, 130, 246, 0.4));
  --gradient-text: linear-gradient(135deg, #ffffff 30%, #c084fc 70%, #60a5fa 100%);
  --gradient-accent-text: linear-gradient(135deg, #c084fc 0%, #38bdf8 100%);

  /* Borders & Micro-Glow */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-neon: rgba(168, 85, 247, 0.35);
  --border-neon-hover: rgba(168, 85, 247, 0.8);
  --border-card: 1px solid rgba(168, 85, 247, 0.18);
  --glow-purple: 0 0 25px rgba(168, 85, 247, 0.45);
  --glow-button: 0 0 30px rgba(168, 85, 247, 0.5), 0 0 10px rgba(59, 130, 246, 0.4);
  --glow-button-hover: 0 0 45px rgba(168, 85, 247, 0.75), 0 0 20px rgba(59, 130, 246, 0.6);

  /* Typography */
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", Consolas, Monaco, "Courier New", monospace;
  --text-white: #ffffff;
  --text-light: #f3f4f6;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Layout Constants */
  --max-width: 1240px;
  --nav-height: 76px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-family: var(--font-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Ambient Cyber Mesh Background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 18% 15%, rgba(168, 85, 247, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 82% 25%, rgba(59, 130, 246, 0.14) 0%, transparent 50%),
    radial-gradient(circle at 50% 65%, rgba(168, 85, 247, 0.08) 0%, transparent 60%),
    radial-gradient(circle at 85% 85%, rgba(56, 189, 248, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

/* Subtle Cyber Grid Lines */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: -1;
}

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

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

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Section Styling */
.section {
  padding: 96px 0;
  position: relative;
}

.section-title-wrap {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-badge);
  border: 1px solid rgba(168, 85, 247, 0.35);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-purple-light);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.2);
}

.section-title {
  font-size: clamp(1.9rem, 3.2vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Gradient Text Helper */
.text-gradient {
  background: var(--gradient-accent-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-glass-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(168, 85, 247, 0.15);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.03em;
}

.brand-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glow-purple);
  color: #fff;
  font-weight: 900;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.brand-logo-badge {
  font-size: 0.65rem;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(59, 130, 246, 0.25);
  border: 1px solid rgba(59, 130, 246, 0.5);
  color: var(--accent-cyan);
  text-transform: uppercase;
  font-weight: 700;
  margin-left: 2px;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
  border-radius: 2px;
}

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

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

/* ==========================================================================
   Buttons & CTA System
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.98rem;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  border: none;
  outline: none;
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-white);
  box-shadow: var(--glow-button);
}

.btn-primary:hover {
  background: var(--gradient-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--glow-button-hover);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(0);
}

/* Shimmer Light Reflection on Primary CTA */
.btn-primary::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -60%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.35) 50%,
    transparent 100%
  );
  transform: rotate(25deg);
  animation: btnShimmer 4s infinite cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

@keyframes btnShimmer {
  0% { left: -70%; }
  25%, 100% { left: 140%; }
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-light);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.5);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.25);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-block {
  width: 100%;
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-white);
  cursor: pointer;
  padding: 8px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 80px 0 100px 0;
  position: relative;
  text-align: center;
}

.hero-tag-wrap {
  margin-bottom: 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 22px;
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-white);
  box-shadow: 0 0 24px rgba(168, 85, 247, 0.25);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 12px #22c55e;
  animation: pulseGreen 2s infinite ease-in-out;
}

@keyframes pulseGreen {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 4.2rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
}

.hero-description {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 40px auto;
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.hero-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
}

/* Hero Telemetry Dashboard */
.hero-telemetry {
  max-width: 1040px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(168, 85, 247, 0.12);
  position: relative;
  overflow: hidden;
}

.telemetry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.telemetry-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.telemetry-status-pill {
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  color: #4ade80;
  font-weight: 600;
}

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

.telemetry-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 18px 16px;
  text-align: left;
  transition: var(--transition);
}

.telemetry-card:hover {
  background: rgba(168, 85, 247, 0.08);
  border-color: rgba(168, 85, 247, 0.35);
  transform: translateY(-2px);
}

.telemetry-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.telemetry-value {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-white);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.telemetry-sub {
  font-size: 0.76rem;
  color: #4ade80;
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   3 Core Advantages Section
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-neon-hover);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), var(--glow-purple);
}

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

.feature-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.8rem;
  color: var(--accent-purple-light);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.2);
  transition: var(--transition);
}

.feature-card:hover .feature-icon-wrap {
  background: var(--gradient-primary);
  color: #fff;
  transform: scale(1.08);
  box-shadow: var(--glow-purple);
}

.feature-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
  line-height: 1.35;
}

.feature-card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.feature-specs-list {
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-spec-item {
  font-size: 0.88rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.spec-bullet {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-purple);
  box-shadow: 0 0 8px var(--accent-purple);
  flex-shrink: 0;
}

/* ==========================================================================
   Speed & Protocol Matrix Section
   ========================================================================== */
.spec-matrix-box {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-top: 50px;
}

.spec-matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.spec-matrix-item {
  padding: 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
}

.spec-matrix-item:hover {
  border-color: rgba(168, 85, 247, 0.35);
  background: rgba(168, 85, 247, 0.06);
}

.spec-matrix-num {
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-white);
  font-family: var(--font-mono);
  margin-bottom: 6px;
}

.spec-matrix-text {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Supported Client Badges */
.client-badges-wrap {
  margin-top: 40px;
  text-align: center;
}

.client-badges-title {
  font-size: 0.9rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.client-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.client-badge {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-light);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.client-badge:hover {
  background: rgba(168, 85, 247, 0.12);
  border-color: rgba(168, 85, 247, 0.4);
  color: var(--text-white);
  transform: translateY(-2px);
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-neon-hover);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7), 0 0 30px rgba(168, 85, 247, 0.3);
}

/* Featured High-Conversion Card */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(34, 26, 56, 0.85) 0%, rgba(18, 16, 28, 0.95) 100%);
  border: 2px solid rgba(168, 85, 247, 0.65);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6), var(--glow-purple);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-8px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8), var(--glow-button-hover);
}

.pricing-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: #fff;
  padding: 5px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: var(--glow-purple);
  white-space: nowrap;
}

.pricing-header {
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.pricing-plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 6px;
}

.pricing-plan-target {
  font-size: 0.88rem;
  color: var(--text-dim);
}

.pricing-price-wrap {
  margin: 20px 0 8px 0;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.pricing-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-purple-light);
}

.pricing-amount {
  font-size: 3.2rem;
  font-weight: 900;
  color: var(--text-white);
  font-family: var(--font-mono);
  line-height: 1;
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--text-dim);
}

.pricing-discount-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.35);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  margin-top: 6px;
}

.pricing-features-list {
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.93rem;
  color: var(--text-light);
}

.feature-check-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(34, 197, 94, 0.18);
  color: #4ade80;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.pricing-cta-wrap {
  margin-top: auto;
}

/* ==========================================================================
   Selected Long-tail Tech Section (精选技术专题)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.article-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.article-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0.4;
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-neon-hover);
  transform: translateY(-5px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.6), var(--glow-purple);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.article-tag {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(59, 130, 246, 0.15);
  border: 1px solid rgba(59, 130, 246, 0.35);
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.article-tag.alt {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.35);
  color: var(--accent-purple-light);
}

.article-read-time {
  font-size: 0.84rem;
  color: var(--text-dim);
}

.article-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.4;
  margin-bottom: 16px;
  transition: var(--transition);
}

.article-card:hover .article-title {
  color: var(--accent-purple-light);
}

.article-excerpt {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
}

.article-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--accent-cyan);
  transition: var(--transition);
}

.article-link-btn:hover {
  color: var(--text-white);
  gap: 12px;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(168, 85, 247, 0.4);
}

.faq-summary {
  padding: 22px 28px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-white);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
}

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

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid rgba(168, 85, 247, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-purple-light);
  font-size: 1rem;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

details[open] .faq-icon {
  transform: rotate(180deg);
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
}

details[open] .faq-item {
  border-color: rgba(168, 85, 247, 0.5);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.faq-content {
  padding: 0 28px 24px 28px;
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 16px;
}

.faq-content strong {
  color: var(--text-light);
}

/* ==========================================================================
   Testimonials (Reviews) Section
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.review-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-neon-hover);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
}

.review-stars {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

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

.review-user-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1rem;
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.35);
  flex-shrink: 0;
}

.review-user-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-white);
}

.review-user-role {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Bottom CTA Banner
   ========================================================================== */
.banner-cta-section {
  padding: 60px 0 90px 0;
}

.banner-cta-box {
  background: linear-gradient(135deg, rgba(38, 22, 66, 0.85) 0%, rgba(18, 26, 48, 0.85) 100%);
  border: 1px solid rgba(168, 85, 247, 0.45);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  text-align: center;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 40px rgba(168, 85, 247, 0.25);
  position: relative;
  overflow: hidden;
}

.banner-cta-box::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.banner-cta-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.banner-cta-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin: 0 auto 36px auto;
  line-height: 1.7;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #06050b;
  border-top: 1px solid rgba(168, 85, 247, 0.12);
  padding: 70px 0 36px 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand-desc {
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 16px;
  max-width: 340px;
}

.footer-col-title {
  color: var(--text-white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

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

.footer-link {
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--accent-purple-light);
  transform: translateX(3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

.footer-seo-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-seo-link {
  color: var(--text-dim);
  transition: var(--transition);
}

.footer-seo-link:hover {
  color: var(--text-light);
  text-decoration: underline;
}

/* Floating Action Pill on Mobile */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  z-index: 99;
}

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

  .pricing-card.featured {
    transform: none;
  }

  .pricing-card.featured:hover {
    transform: translateY(-8px);
  }

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

  .telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .spec-matrix-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .section {
    padding: 64px 0;
  }

  .features-grid,
  .pricing-grid,
  .articles-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

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

  .spec-matrix-grid {
    grid-template-columns: 1fr;
  }

  .banner-cta-box {
    padding: 40px 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .footer-seo-links {
    justify-content: center;
  }

  .mobile-sticky-cta {
    display: block;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .pricing-card {
    padding: 30px 20px;
  }
}